junte/Model
1
0
Fork 0
mirror of https://github.com/Hestia-Homes/Model.git synced 2026-07-12 13:29:04 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

neighbour_divergence: key cohorts on main-heating fuel

Browse source 
The neighbour SAP-divergence cohort was (postcode, property_type, built_form),
which mixed electric- and gas-heated dwellings. Electricity scores materially
lower in SAP than mains gas for identical fabric, so a mixed-fuel postcode
produced cross-fuel false outliers — an electric dwelling flagged only for being
electric among gas neighbours.

Add the main-heating fuel class to the cohort key (electricity variants — 29/30
+ off-peak 31-40 — collapse to one class; every other code is its own bucket).
Now every flagged divergence is a same-fuel comparison worth investigating. On
portfolio 814 this refined 20 raw divergences to 17 same-fuel ones while keeping
the genuine within-fuel outliers (e.g. the all-electric WC2B 4AW flats at SAP
26/38 vs a cohort median of 67).

Reaches the fuel via epc_main_heating_detail through the indexed property_id —
still never touches the recommendation table. Surfaced by the portfolio-814
recommendation audit (Work item B, #1388).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Jun-te Kim 2026-07-01 14:24:31 +00:00
parent e95c3cf906
commit 009394bb19
3 changed files with 202 additions and 456 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

556
modelling_audit.md
View file

@ -1,463 +1,121 @@
# Modelling anomaly audit
Scanned **31919** properties · flagged **10563** anomalies across **10** checks.
Scanned **338** properties · flagged **360** anomalies across **6** checks.
## impossible-sap-over-100 (HIGH) — 1
## plan-score-below-baseline (HIGH) — 3
- property **726993** (uprn 100061757571): SAP > 100: effective 102.0
- property **742302** (uprn 100022921559): post SAP 70.5 below effective baseline 72.0 (Δ-1.5)
- property **742367** (uprn 5300072135): post SAP 68.9 below effective baseline 70.0 (Δ-1.1)
- property **742368** (uprn 5300072136): post SAP 70.4 below effective baseline 71.0 (Δ-0.6)
## plan-below-baseline-band (HIGH) — 363
## plan-stops-short-of-goal (HIGH) — 311
- property **709810** (uprn 10096028301): post C (78.02813) worse than effective baseline B (85)
- property **709846** (uprn 10096399556): post C (79.7374) worse than effective baseline A (93)
- property **709847** (uprn 10096028354): post C (78.695816) worse than effective baseline B (91)
- property **709850** (uprn 10096028348): post C (78.750984) worse than effective baseline B (89)
- property **709959** (uprn 10096028306): post C (78.14567) worse than effective baseline B (84)
- property **710011** (uprn 10096028349): post C (78.750984) worse than effective baseline B (89)
- property **710071** (uprn 10002918889): post C (76.07915) worse than effective baseline B (82)
- property **710075** (uprn 10002918890): post C (79.84036) worse than effective baseline B (82)
- property **710117** (uprn 10096399566): post C (79.86282) worse than effective baseline A (93)
- property **710121** (uprn 10096028307): post C (78.790596) worse than effective baseline B (90)
- property **710131** (uprn 10096028350): post C (80.142784) worse than effective baseline A (94)
- property **710201** (uprn 10090944222): post C (74.58814) worse than effective baseline B (82)
- property **710222** (uprn 10096399567): post C (79.84616) worse than effective baseline A (93)
- property **710225** (uprn 10096028308): post C (78.78894) worse than effective baseline B (90)
- property **710241** (uprn 10096028351): post C (80.142784) worse than effective baseline A (94)
- property **710326** (uprn 10096028309): post C (78.610855) worse than effective baseline B (89)
- property **710335** (uprn 10096028352): post C (79.9757) worse than effective baseline A (94)
- property **710395** (uprn 10096028310): post C (79.46583) worse than effective baseline B (91)
- property **710474** (uprn 10096028355): post C (78.47655) worse than effective baseline B (91)
- property **710479** (uprn 10096028353): post C (80.291725) worse than effective baseline A (95)
- property **710537** (uprn 10096028311): post C (79.46583) worse than effective baseline B (91)
- property **710540** (uprn 100060714157): post D (68.24699) worse than effective baseline C (71)
- property **710760** (uprn 10096028302): post C (78.28315) worse than effective baseline B (85)
- property **710800** (uprn 10096399558): post C (79.7374) worse than effective baseline A (93)
- property **710802** (uprn 10096028356): post C (78.47655) worse than effective baseline B (91)
- property **710946** (uprn 44012846): post C (79.819626) worse than effective baseline B (81)
- property **711027** (uprn 10096028357): post C (77.96618) worse than effective baseline B (90)
- property **711178** (uprn 10091636026): post C (76.05113) worse than effective baseline B (81)
- property **711195** (uprn 10096028303): post C (80.00826) worse than effective baseline B (86)
- property **711236** (uprn 10096399560): post C (79.7374) worse than effective baseline A (93)
- property **711238** (uprn 10096028358): post C (78.695816) worse than effective baseline B (91)
- property **711312** (uprn 10096028346): post C (80.1876) worse than effective baseline A (93)
- property **711376** (uprn 10096028359): post C (78.47655) worse than effective baseline B (91)
- property **711489** (uprn 10096028304): post C (80.3187) worse than effective baseline B (86)
- property **711523** (uprn 10096399562): post C (79.7374) worse than effective baseline A (93)
- property **711524** (uprn 10096028360): post C (78.47655) worse than effective baseline B (91)
- property **711539** (uprn 68159801): post D (66.09142) worse than effective baseline C (71)
- property **711575** (uprn 10096028347): post C (80.1876) worse than effective baseline A (94)
- property **711639** (uprn 10096028361): post C (78.88584) worse than effective baseline B (91)
- property **711706** (uprn 10096028305): post C (78.71836) worse than effective baseline B (85)
- property **711715** (uprn 10013924857): post C (79.91303) worse than effective baseline B (81)
- property **711732** (uprn 100062190435): post C (77.935425) worse than effective baseline B (82)
- property **711795** (uprn 10090343115): post E (52.785263) worse than effective baseline C (73)
- property **711821** (uprn 10096399575): post C (80.209465) worse than effective baseline A (93)
- property **711824** (uprn 10094615095): post C (78.01443) worse than effective baseline A (92)
- property **711858** (uprn 22245014): post C (79.352325) worse than effective baseline B (81)
- property **711881** (uprn 10023444014): post C (79.504456) worse than effective baseline B (81)
- property **711897** (uprn 10012025246): post C (76.70494) worse than effective baseline B (81)
- property **711898** (uprn 10094615103): post C (79.97074) worse than effective baseline A (92)
- property **711917** (uprn 10012027840): post C (72.92677) worse than effective baseline B (81)
- … and 313 more (see CSV)
- property **742063** (uprn 10010200962): post D (60.29299) short of goal B on an unlimited-budget scenario (cost_of_works £10378)
- property **742064** (uprn 10010206037): post C (69.27856) short of goal B on an unlimited-budget scenario (cost_of_works £9339)
- property **742065** (uprn 10010206038): post C (78.81704) short of goal B on an unlimited-budget scenario (cost_of_works £1043)
- property **742066** (uprn 10010206039): post C (76.22735) short of goal B on an unlimited-budget scenario (cost_of_works £7876)
- property **742067** (uprn 10010206040): post C (72.775085) short of goal B on an unlimited-budget scenario (cost_of_works £7682)
- property **742068** (uprn 10010206041): post C (74.29278) short of goal B on an unlimited-budget scenario (cost_of_works £8510)
- property **742069** (uprn 10010206042): post C (70.24012) short of goal B on an unlimited-budget scenario (cost_of_works £7638)
- property **742070** (uprn 10010206043): post C (72.3706) short of goal B on an unlimited-budget scenario (cost_of_works £3702)
- property **742072** (uprn 34003067): post D (61.096947) short of goal B on an unlimited-budget scenario (cost_of_works £13391)
- property **742073** (uprn 34003068): post D (61.096947) short of goal B on an unlimited-budget scenario (cost_of_works £13391)
- property **742075** (uprn 34003070): post D (61.096947) short of goal B on an unlimited-budget scenario (cost_of_works £13391)
- property **742076** (uprn 34003071): post D (61.096947) short of goal B on an unlimited-budget scenario (cost_of_works £13391)
- property **742079** (uprn 12013027): post C (78.44673) short of goal B on an unlimited-budget scenario (cost_of_works £2892)
- property **742080** (uprn 12013028): post D (62.603214) short of goal B on an unlimited-budget scenario (cost_of_works £3372)
- property **742081** (uprn 12013029): post C (74.525345) short of goal B on an unlimited-budget scenario (cost_of_works £1029)
- property **742082** (uprn 12013030): post C (78.44673) short of goal B on an unlimited-budget scenario (cost_of_works £2892)
- property **742083** (uprn 12013031): post C (78.44673) short of goal B on an unlimited-budget scenario (cost_of_works £2892)
- property **742084** (uprn 12013032): post C (73.37248) short of goal B on an unlimited-budget scenario (cost_of_works £1057)
- property **742085** (uprn 12013033): post D (68.01724) short of goal B on an unlimited-budget scenario (cost_of_works £1057)
- property **742086** (uprn 12013034): post D (61.581734) short of goal B on an unlimited-budget scenario (cost_of_works £3610)
- property **742087** (uprn 12013038): post C (78.44673) short of goal B on an unlimited-budget scenario (cost_of_works £2892)
- property **742088** (uprn 12013042): post C (74.92009) short of goal B on an unlimited-budget scenario (cost_of_works £3404)
- property **742090** (uprn 12013044): post C (73.35894) short of goal B on an unlimited-budget scenario (cost_of_works £1057)
- property **742091** (uprn 12013045): post C (73.37248) short of goal B on an unlimited-budget scenario (cost_of_works £1057)
- property **742092** (uprn 12013046): post D (60.531925) short of goal B on an unlimited-budget scenario (cost_of_works £1029)
- property **742093** (uprn 12013047): post C (74.26961) short of goal B on an unlimited-budget scenario (cost_of_works £2899)
- property **742094** (uprn 12013048): post C (78.44673) short of goal B on an unlimited-budget scenario (cost_of_works £2892)
- property **742095** (uprn 100020233237): post C (68.751595) short of goal B on an unlimited-budget scenario (cost_of_works £0)
- property **742096** (uprn 100020233238): post C (68.751595) short of goal B on an unlimited-budget scenario (cost_of_works £0)
- property **742097** (uprn 100020233239): post C (72.782684) short of goal B on an unlimited-budget scenario (cost_of_works £7684)
- property **742098** (uprn 100020233240): post D (67.203026) short of goal B on an unlimited-budget scenario (cost_of_works £633)
- property **742099** (uprn 100020233241): post D (67.30785) short of goal B on an unlimited-budget scenario (cost_of_works £3400)
- property **742100** (uprn 100020233242): post C (68.658844) short of goal B on an unlimited-budget scenario (cost_of_works £35)
- property **742101** (uprn 100020233243): post D (66.59807) short of goal B on an unlimited-budget scenario (cost_of_works £3285)
- property **742102** (uprn 100020233244): post C (68.751595) short of goal B on an unlimited-budget scenario (cost_of_works £0)
- property **742103** (uprn 100020233204): post C (68.751595) short of goal B on an unlimited-budget scenario (cost_of_works £0)
- property **742104** (uprn 100020233205): post D (66.40878) short of goal B on an unlimited-budget scenario (cost_of_works £32)
- property **742105** (uprn 100020233206): post C (68.751595) short of goal B on an unlimited-budget scenario (cost_of_works £0)
- property **742106** (uprn 100020233207): post C (68.751595) short of goal B on an unlimited-budget scenario (cost_of_works £0)
- property **742107** (uprn 100020233208): post C (68.751595) short of goal B on an unlimited-budget scenario (cost_of_works £0)
- property **742108** (uprn 100020233209): post C (68.751595) short of goal B on an unlimited-budget scenario (cost_of_works £0)
- property **742109** (uprn 100020233210): post C (74.14777) short of goal B on an unlimited-budget scenario (cost_of_works £3070)
- property **742110** (uprn 100020233211): post C (68.751595) short of goal B on an unlimited-budget scenario (cost_of_works £0)
- property **742111** (uprn 100020233212): post C (68.751595) short of goal B on an unlimited-budget scenario (cost_of_works £0)
- property **742112** (uprn 100020233213): post C (68.751595) short of goal B on an unlimited-budget scenario (cost_of_works £0)
- property **742113** (uprn 100020233235): post C (69.19524) short of goal B on an unlimited-budget scenario (cost_of_works £4861)
- property **742114** (uprn 100020233236): post C (73.46247) short of goal B on an unlimited-budget scenario (cost_of_works £7126)
- property **742116** (uprn 100020942574): post D (67.459236) short of goal B on an unlimited-budget scenario (cost_of_works £28)
- property **742117** (uprn 100020942575): post D (67.459236) short of goal B on an unlimited-budget scenario (cost_of_works £28)
- property **742118** (uprn 100020942576): post D (67.459236) short of goal B on an unlimited-budget scenario (cost_of_works £28)
- … and 261 more (see CSV)
## plan-score-below-baseline (HIGH) — 1631
## already-meets-goal-with-works (MEDIUM) — 4
- property **709790** (uprn 10023443426): post SAP 74.2 below effective baseline 76.0 (Δ-1.8)
- property **709810** (uprn 10096028301): post SAP 78.0 below effective baseline 85.0 (Δ-7.0)
- property **709846** (uprn 10096399556): post SAP 79.7 below effective baseline 93.0 (Δ-13.3)
- property **709847** (uprn 10096028354): post SAP 78.7 below effective baseline 91.0 (Δ-12.3)
- property **709850** (uprn 10096028348): post SAP 78.8 below effective baseline 89.0 (Δ-10.2)
- property **709959** (uprn 10096028306): post SAP 78.1 below effective baseline 84.0 (Δ-5.9)
- property **709970** (uprn 10013924859): post SAP 79.2 below effective baseline 80.0 (Δ-0.8)
- property **709975** (uprn 200001466609): post SAP 72.3 below effective baseline 79.0 (Δ-6.7)
- property **710011** (uprn 10096028349): post SAP 78.8 below effective baseline 89.0 (Δ-10.2)
- property **710071** (uprn 10002918889): post SAP 76.1 below effective baseline 82.0 (Δ-5.9)
- property **710075** (uprn 10002918890): post SAP 79.8 below effective baseline 82.0 (Δ-2.2)
- property **710117** (uprn 10096399566): post SAP 79.9 below effective baseline 93.0 (Δ-13.1)
- property **710121** (uprn 10096028307): post SAP 78.8 below effective baseline 90.0 (Δ-11.2)
- property **710122** (uprn 100090187902): post SAP 72.4 below effective baseline 74.0 (Δ-1.6)
- property **710131** (uprn 10096028350): post SAP 80.1 below effective baseline 94.0 (Δ-13.9)
- property **710140** (uprn 10023302889): post SAP 76.9 below effective baseline 79.0 (Δ-2.1)
- property **710201** (uprn 10090944222): post SAP 74.6 below effective baseline 82.0 (Δ-7.4)
- property **710222** (uprn 10096399567): post SAP 79.8 below effective baseline 93.0 (Δ-13.2)
- property **710225** (uprn 10096028308): post SAP 78.8 below effective baseline 90.0 (Δ-11.2)
- property **710241** (uprn 10096028351): post SAP 80.1 below effective baseline 94.0 (Δ-13.9)
- property **710274** (uprn 10013924864): post SAP 74.8 below effective baseline 76.0 (Δ-1.2)
- property **710326** (uprn 10096028309): post SAP 78.6 below effective baseline 89.0 (Δ-10.4)
- property **710335** (uprn 10096028352): post SAP 80.0 below effective baseline 94.0 (Δ-14.0)
- property **710362** (uprn 10090317710): post SAP 75.5 below effective baseline 79.0 (Δ-3.5)
- property **710395** (uprn 10096028310): post SAP 79.5 below effective baseline 91.0 (Δ-11.5)
- property **710472** (uprn 10013918445): post SAP 76.9 below effective baseline 79.0 (Δ-2.1)
- property **710474** (uprn 10096028355): post SAP 78.5 below effective baseline 91.0 (Δ-12.5)
- property **710479** (uprn 10096028353): post SAP 80.3 below effective baseline 95.0 (Δ-14.7)
- property **710525** (uprn 10012028784): post SAP 69.6 below effective baseline 79.0 (Δ-9.4)
- property **710537** (uprn 10096028311): post SAP 79.5 below effective baseline 91.0 (Δ-11.5)
- property **710540** (uprn 100060714157): post SAP 68.2 below effective baseline 71.0 (Δ-2.8)
- property **710544** (uprn 10008052006): post SAP 81.1 below effective baseline 83.0 (Δ-1.9)
- property **710552** (uprn 100060706143): post SAP 83.0 below effective baseline 85.0 (Δ-2.0)
- property **710569** (uprn 200000546526): post SAP 70.8 below effective baseline 73.0 (Δ-2.2)
- property **710576** (uprn 100090187795): post SAP 72.4 below effective baseline 75.0 (Δ-2.6)
- property **710645** (uprn 10009433145): post SAP 82.4 below effective baseline 83.0 (Δ-0.6)
- property **710650** (uprn 200001530089): post SAP 72.9 below effective baseline 74.0 (Δ-1.1)
- property **710686** (uprn 10009433147): post SAP 82.1 below effective baseline 83.0 (Δ-0.9)
- property **710760** (uprn 10096028302): post SAP 78.3 below effective baseline 85.0 (Δ-6.7)
- property **710785** (uprn 44006007): post SAP 75.3 below effective baseline 76.0 (Δ-0.7)
- property **710792** (uprn 5300059024): post SAP 75.7 below effective baseline 79.0 (Δ-3.3)
- property **710800** (uprn 10096399558): post SAP 79.7 below effective baseline 93.0 (Δ-13.3)
- property **710802** (uprn 10096028356): post SAP 78.5 below effective baseline 91.0 (Δ-12.5)
- property **710841** (uprn 200003688154): post SAP 70.3 below effective baseline 72.0 (Δ-1.7)
- property **710895** (uprn 100020475290): post SAP 72.4 below effective baseline 73.0 (Δ-0.6)
- property **710911** (uprn 10010221820): post SAP 82.2 below effective baseline 84.0 (Δ-1.8)
- property **710946** (uprn 44012846): post SAP 79.8 below effective baseline 81.0 (Δ-1.2)
- property **710955** (uprn 10090844951): post SAP 78.1 below effective baseline 79.0 (Δ-0.9)
- property **710988** (uprn 10023371802): post SAP 73.3 below effective baseline 75.0 (Δ-1.7)
- property **711014** (uprn 5300088717): post SAP 72.5 below effective baseline 74.0 (Δ-1.5)
- … and 1581 more (see CSV)
- property **742077** (uprn 34156817): already B >= goal B but cost_of_works £4515
- property **742078** (uprn 34156818): already B >= goal B but cost_of_works £4515
- property **742207** (uprn 100081143001): already B >= goal B but cost_of_works £1029
- property **742269** (uprn 100022769436): already B >= goal B but cost_of_works £1029
## already-meets-goal-with-works (MEDIUM) — 1162
## zero-works-post-differs (MEDIUM) — 2
- property **709775** (uprn 100020933699): already C >= goal C but cost_of_works £32
- property **709875** (uprn 100020973465): already C >= goal C but cost_of_works £38
- property **709986** (uprn 200000539408): already C >= goal C but cost_of_works £32
- property **709992** (uprn 100022908998): already C >= goal C but cost_of_works £555
- property **710005** (uprn 100090178307): already C >= goal C but cost_of_works £21
- property **710033** (uprn 100022920891): already C >= goal C but cost_of_works £855
- property **710084** (uprn 200003444301): already C >= goal C but cost_of_works £505
- property **710185** (uprn 100020650847): already C >= goal C but cost_of_works £455
- property **710221** (uprn 6701328): already C >= goal C but cost_of_works £655
- property **710247** (uprn 100020432467): already C >= goal C but cost_of_works £555
- property **710298** (uprn 100020220397): already C >= goal C but cost_of_works £4515
- property **710331** (uprn 100020492824): already C >= goal C but cost_of_works £855
- property **710400** (uprn 100021011618): already C >= goal C but cost_of_works £3725
- property **710484** (uprn 100060316083): already C >= goal C but cost_of_works £24
- property **710517** (uprn 100020951618): already C >= goal C but cost_of_works £1029
- property **710525** (uprn 10012028784): already C >= goal C but cost_of_works £11539
- property **710539** (uprn 100021973960): already C >= goal C but cost_of_works £505
- property **710540** (uprn 100060714157): already C >= goal C but cost_of_works £11600
- property **710555** (uprn 100060718869): already C >= goal C but cost_of_works £28
- property **710574** (uprn 100020947162): already C >= goal C but cost_of_works £28
- property **710690** (uprn 200003688150): already C >= goal C but cost_of_works £505
- property **710703** (uprn 100020438146): already C >= goal C but cost_of_works £32
- property **710707** (uprn 100061820799): already C >= goal C but cost_of_works £32
- property **710713** (uprn 200003497667): already C >= goal C but cost_of_works £11082
- property **710828** (uprn 100060714174): already C >= goal C but cost_of_works £21
- property **710889** (uprn 200003469113): already C >= goal C but cost_of_works £455
- property **711058** (uprn 5300059062): already C >= goal C but cost_of_works £3962
- property **711096** (uprn 100020455891): already C >= goal C but cost_of_works £555
- property **711099** (uprn 100020229279): already C >= goal C but cost_of_works £1029
- property **711334** (uprn 5300036435): already C >= goal C but cost_of_works £476
- property **711390** (uprn 100023263012): already C >= goal C but cost_of_works £505
- property **711539** (uprn 68159801): already C >= goal C but cost_of_works £2436
- property **711679** (uprn 100021005287): already C >= goal C but cost_of_works £455
- property **711694** (uprn 100062191221): already C >= goal C but cost_of_works £18
- property **711795** (uprn 10090343115): already C >= goal C but cost_of_works £662
- property **712249** (uprn 100021939292): already C >= goal C but cost_of_works £1029
- property **712279** (uprn 10090343152): already C >= goal C but cost_of_works £1029
- property **712426** (uprn 100062208849): already C >= goal C but cost_of_works £530
- property **712446** (uprn 10090343167): already C >= goal C but cost_of_works £1029
- property **712690** (uprn 10035061455): already C >= goal C but cost_of_works £2790
- property **712697** (uprn 100060742520): already C >= goal C but cost_of_works £416
- property **712764** (uprn 100060675900): already C >= goal C but cost_of_works £32
- property **712766** (uprn 100021961011): already C >= goal C but cost_of_works £2566
- property **712801** (uprn 100061734876): already C >= goal C but cost_of_works £555
- property **712831** (uprn 100061736377): already C >= goal C but cost_of_works £1282
- property **712864** (uprn 100061738178): already C >= goal C but cost_of_works £455
- property **712865** (uprn 100061738325): already C >= goal C but cost_of_works £14266
- property **712869** (uprn 100061738604): already C >= goal C but cost_of_works £18
- property **712874** (uprn 100061757360): already C >= goal C but cost_of_works £755
- property **712899** (uprn 100061739860): already C >= goal C but cost_of_works £28
- … and 1112 more (see CSV)
- property **742302** (uprn 100022921559): £0 works but post SAP 70.5 != effective 72.0
- property **742367** (uprn 5300072135): £0 works but post SAP 68.9 != effective 70.0
## excessive-solar-sap (MEDIUM) — 51
## effective-lodged-divergence (LOW) — 9
- property **710374** (uprn 10090342188): solar PV alone earns 26.1 SAP points (likely oversized array)
- property **713238** (uprn 200004784741): solar PV alone earns 32.6 SAP points (likely oversized array)
- property **714227** (uprn 100061738603): solar PV alone earns 33.9 SAP points (likely oversized array)
- property **714257** (uprn 100061740105): solar PV alone earns 29.8 SAP points (likely oversized array)
- property **714511** (uprn 100061761168): solar PV alone earns 32.3 SAP points (likely oversized array)
- property **714977** (uprn 100061761946): solar PV alone earns 31.4 SAP points (likely oversized array)
- property **715563** (uprn 100061761947): solar PV alone earns 28.5 SAP points (likely oversized array)
- property **715595** (uprn 10002468656): solar PV alone earns 29.3 SAP points (likely oversized array)
- property **715740** (uprn 100061764300): solar PV alone earns 27.3 SAP points (likely oversized array)
- property **716734** (uprn 10002469029): solar PV alone earns 31.0 SAP points (likely oversized array)
- property **716740** (uprn 100061753334): solar PV alone earns 31.1 SAP points (likely oversized array)
- property **717201** (uprn 100091206047): solar PV alone earns 31.3 SAP points (likely oversized array)
- property **718323** (uprn 10002472608): solar PV alone earns 25.2 SAP points (likely oversized array)
- property **718371** (uprn 100061764075): solar PV alone earns 35.5 SAP points (likely oversized array)
- property **718890** (uprn 100062344151): solar PV alone earns 31.9 SAP points (likely oversized array)
- property **719064** (uprn 100021004675): solar PV alone earns 25.6 SAP points (likely oversized array)
- property **719080** (uprn 100091206033): solar PV alone earns 31.3 SAP points (likely oversized array)
- property **719829** (uprn 100091206052): solar PV alone earns 31.6 SAP points (likely oversized array)
- property **720039** (uprn 100061741993): solar PV alone earns 32.6 SAP points (likely oversized array)
- property **720104** (uprn 100061764078): solar PV alone earns 29.9 SAP points (likely oversized array)
- property **721044** (uprn 100061764081): solar PV alone earns 33.9 SAP points (likely oversized array)
- property **721222** (uprn 100062480566): solar PV alone earns 27.0 SAP points (likely oversized array)
- property **722986** (uprn 100061742571): solar PV alone earns 29.8 SAP points (likely oversized array)
- property **723096** (uprn 100061763625): solar PV alone earns 34.5 SAP points (likely oversized array)
- property **723516** (uprn 100061741124): solar PV alone earns 31.0 SAP points (likely oversized array)
- property **723528** (uprn 100061742003): solar PV alone earns 30.9 SAP points (likely oversized array)
- property **724609** (uprn 100061742008): solar PV alone earns 27.0 SAP points (likely oversized array)
- property **725224** (uprn 100062480573): solar PV alone earns 27.6 SAP points (likely oversized array)
- property **725266** (uprn 10034506076): solar PV alone earns 38.5 SAP points (likely oversized array)
- property **725603** (uprn 100061761161): solar PV alone earns 35.6 SAP points (likely oversized array)
- property **727422** (uprn 200001645537): solar PV alone earns 29.4 SAP points (likely oversized array)
- property **727688** (uprn 100061761162): solar PV alone earns 28.8 SAP points (likely oversized array)
- property **727699** (uprn 200004784746): solar PV alone earns 27.3 SAP points (likely oversized array)
- property **727968** (uprn 100061740165): solar PV alone earns 34.5 SAP points (likely oversized array)
- property **728344** (uprn 100061764582): solar PV alone earns 26.9 SAP points (likely oversized array)
- property **729028** (uprn 100061735428): solar PV alone earns 32.0 SAP points (likely oversized array)
- property **729329** (uprn 100061749297): solar PV alone earns 30.2 SAP points (likely oversized array)
- property **729415** (uprn 100091206037): solar PV alone earns 31.5 SAP points (likely oversized array)
- property **731052** (uprn 100021958934): solar PV alone earns 29.3 SAP points (likely oversized array)
- property **731481** (uprn 100021935669): solar PV alone earns 25.1 SAP points (likely oversized array)
- property **731812** (uprn 200001645541): solar PV alone earns 32.1 SAP points (likely oversized array)
- property **731994** (uprn 10023371767): solar PV alone earns 25.3 SAP points (likely oversized array)
- property **732041** (uprn 100061761165): solar PV alone earns 30.1 SAP points (likely oversized array)
- property **732050** (uprn 100061764295): solar PV alone earns 30.5 SAP points (likely oversized array)
- property **732860** (uprn 100061733678): solar PV alone earns 32.7 SAP points (likely oversized array)
- property **733394** (uprn 100061748753): solar PV alone earns 25.1 SAP points (likely oversized array)
- property **739556** (uprn 100061754547): solar PV alone earns 31.3 SAP points (likely oversized array)
- property **739814** (uprn 200003724253): solar PV alone earns 31.6 SAP points (likely oversized array)
- property **739998** (uprn 100090224018): solar PV alone earns 25.9 SAP points (likely oversized array)
- property **740214** (uprn 100061762820): solar PV alone earns 30.4 SAP points (likely oversized array)
- … and 1 more (see CSV)
- property **742131** (uprn 148013838): effective 62 vs lodged 47 (Δ+15, reason=pre_sap10)
- property **742132** (uprn 148013839): effective 62 vs lodged 47 (Δ+15, reason=pre_sap10)
- property **742204** (uprn 100081142998): effective 69 vs lodged 54 (Δ+15, reason=pre_sap10)
- property **742206** (uprn 100081143000): effective 69 vs lodged 54 (Δ+15, reason=pre_sap10)
- property **742208** (uprn 100081143002): effective 59 vs lodged 44 (Δ+15, reason=pre_sap10)
- property **742216** (uprn 100081143009): effective 69 vs lodged 54 (Δ+15, reason=pre_sap10)
- property **742355** (uprn 100022982934): effective 63 vs lodged 47 (Δ+16, reason=pre_sap10)
- property **742394** (uprn 100022909582): effective 71 vs lodged 86 (Δ-15, reason=pre_sap10)
- property **742395** (uprn 100022909583): effective 72 vs lodged 87 (Δ-15, reason=pre_sap10)
## low-solar-bill-savings (MEDIUM) — 83
## negative-bill-savings (LOW) — 31
- property **710178** (uprn 100020465019): solar PV bill saving only £49/yr — check self-consumption / SEG export
- property **711663** (uprn 100020481859): solar PV bill saving only £47/yr — check self-consumption / SEG export
- property **712943** (uprn 100061741910): solar PV bill saving only £47/yr — check self-consumption / SEG export
- property **713299** (uprn 100060331540): solar PV bill saving only £46/yr — check self-consumption / SEG export
- property **713607** (uprn 100090108855): solar PV bill saving only £46/yr — check self-consumption / SEG export
- property **713631** (uprn 10002470912): solar PV bill saving only £49/yr — check self-consumption / SEG export
- property **713743** (uprn 100060359906): solar PV bill saving only £36/yr — check self-consumption / SEG export
- property **715182** (uprn 100060726237): solar PV bill saving only £46/yr — check self-consumption / SEG export
- property **715701** (uprn 100021001715): solar PV bill saving only £50/yr — check self-consumption / SEG export
- property **716152** (uprn 100090108859): solar PV bill saving only £43/yr — check self-consumption / SEG export
- property **716268** (uprn 100061763778): solar PV bill saving only £36/yr — check self-consumption / SEG export
- property **716289** (uprn 200003688201): solar PV bill saving only £43/yr — check self-consumption / SEG export
- property **716659** (uprn 100061747951): solar PV bill saving only £41/yr — check self-consumption / SEG export
- property **716693** (uprn 100061733911): solar PV bill saving only £39/yr — check self-consumption / SEG export
- property **717392** (uprn 100020450723): solar PV bill saving only £45/yr — check self-consumption / SEG export
- property **717661** (uprn 6176751): solar PV bill saving only £42/yr — check self-consumption / SEG export
- property **718073** (uprn 100021017285): solar PV bill saving only £47/yr — check self-consumption / SEG export
- property **718298** (uprn 100061741870): solar PV bill saving only £43/yr — check self-consumption / SEG export
- property **718567** (uprn 100091206050): solar PV bill saving only £50/yr — check self-consumption / SEG export
- property **719647** (uprn 100020590930): solar PV bill saving only £49/yr — check self-consumption / SEG export
- property **720335** (uprn 100020594071): solar PV bill saving only £36/yr — check self-consumption / SEG export
- property **720677** (uprn 100020969500): solar PV bill saving only £30/yr — check self-consumption / SEG export
- property **721018** (uprn 202140958): solar PV bill saving only £44/yr — check self-consumption / SEG export
- property **721529** (uprn 100060696301): solar PV bill saving only £43/yr — check self-consumption / SEG export
- property **721664** (uprn 100061765249): solar PV bill saving only £46/yr — check self-consumption / SEG export
- property **721895** (uprn 100060726253): solar PV bill saving only £48/yr — check self-consumption / SEG export
- property **722155** (uprn 100061758903): solar PV bill saving only £47/yr — check self-consumption / SEG export
- property **722390** (uprn 100020944918): solar PV bill saving only £47/yr — check self-consumption / SEG export
- property **722910** (uprn 10009428749): solar PV bill saving only £41/yr — check self-consumption / SEG export
- property **723298** (uprn 202140961): solar PV bill saving only £45/yr — check self-consumption / SEG export
- property **723578** (uprn 100020986231): solar PV bill saving only £47/yr — check self-consumption / SEG export
- property **723748** (uprn 100061757556): solar PV bill saving only £48/yr — check self-consumption / SEG export
- property **723965** (uprn 100061761860): solar PV bill saving only £50/yr — check self-consumption / SEG export
- property **724311** (uprn 100061765331): solar PV bill saving only £30/yr — check self-consumption / SEG export
- property **724331** (uprn 100022008224): solar PV bill saving only £22/yr — check self-consumption / SEG export
- property **724850** (uprn 100060719545): solar PV bill saving only £50/yr — check self-consumption / SEG export
- property **725287** (uprn 100062187008): solar PV bill saving only £46/yr — check self-consumption / SEG export
- property **725585** (uprn 100061752475): solar PV bill saving only £44/yr — check self-consumption / SEG export
- property **725807** (uprn 100020996065): solar PV bill saving only £40/yr — check self-consumption / SEG export
- property **725969** (uprn 202141567): solar PV bill saving only £31/yr — check self-consumption / SEG export
- property **726419** (uprn 100061809723): solar PV bill saving only £46/yr — check self-consumption / SEG export
- property **726507** (uprn 100061752706): solar PV bill saving only £48/yr — check self-consumption / SEG export
- property **726627** (uprn 100061152652): solar PV bill saving only £42/yr — check self-consumption / SEG export
- property **726735** (uprn 100061809725): solar PV bill saving only £46/yr — check self-consumption / SEG export
- property **726998** (uprn 100061809727): solar PV bill saving only £46/yr — check self-consumption / SEG export
- property **727114** (uprn 100061809728): solar PV bill saving only £47/yr — check self-consumption / SEG export
- property **727143** (uprn 202141571): solar PV bill saving only £45/yr — check self-consumption / SEG export
- property **727820** (uprn 100061809729): solar PV bill saving only £47/yr — check self-consumption / SEG export
- property **727994** (uprn 202141572): solar PV bill saving only £45/yr — check self-consumption / SEG export
- property **728027** (uprn 10090265602): solar PV bill saving only £45/yr — check self-consumption / SEG export
- … and 33 more (see CSV)
## zero-works-post-differs (MEDIUM) — 5624
- property **709772** (uprn 10093116528): £0 works but post SAP 80.3 != effective 79.0
- property **709773** (uprn 10093116543): £0 works but post SAP 78.5 != effective 77.0
- property **709774** (uprn 10093116529): £0 works but post SAP 76.8 != effective 75.0
- property **709777** (uprn 10094601392): £0 works but post SAP 77.2 != effective 74.0
- property **709778** (uprn 10023444324): £0 works but post SAP 76.9 != effective 75.0
- property **709779** (uprn 10092970673): £0 works but post SAP 70.9 != effective 61.0
- property **709780** (uprn 10094601287): £0 works but post SAP 77.7 != effective 75.0
- property **709783** (uprn 10094601162): £0 works but post SAP 78.1 != effective 74.0
- property **709784** (uprn 10090844948): £0 works but post SAP 76.4 != effective 73.0
- property **709786** (uprn 10093114053): £0 works but post SAP 81.3 != effective 76.0
- property **709787** (uprn 10091568921): £0 works but post SAP 79.4 != effective 77.0
- property **709788** (uprn 10093718424): £0 works but post SAP 80.0 != effective 78.0
- property **709790** (uprn 10023443426): £0 works but post SAP 74.2 != effective 76.0
- property **709791** (uprn 10093412452): £0 works but post SAP 80.2 != effective 79.0
- property **709792** (uprn 6199384): £0 works but post SAP 80.5 != effective 78.0
- property **709793** (uprn 10014314798): £0 works but post SAP 73.8 != effective 72.0
- property **709794** (uprn 10094601294): £0 works but post SAP 78.1 != effective 76.0
- property **709795** (uprn 10090343335): £0 works but post SAP 84.0 != effective 82.0
- property **709796** (uprn 10093115480): £0 works but post SAP 78.8 != effective 77.0
- property **709798** (uprn 10094601226): £0 works but post SAP 77.3 != effective 75.0
- property **709800** (uprn 6701369): £0 works but post SAP 82.5 != effective 78.0
- property **709801** (uprn 202211152): £0 works but post SAP 81.8 != effective 79.0
- property **709803** (uprn 10093394010): £0 works but post SAP 79.9 != effective 78.0
- property **709806** (uprn 10090341811): £0 works but post SAP 80.2 != effective 78.0
- property **709808** (uprn 10093117227): £0 works but post SAP 77.6 != effective 76.0
- property **709809** (uprn 10023444170): £0 works but post SAP 80.3 != effective 78.0
- property **709810** (uprn 10096028301): £0 works but post SAP 78.0 != effective 85.0
- property **709813** (uprn 10094601280): £0 works but post SAP 77.9 != effective 75.0
- property **709814** (uprn 10093386418): £0 works but post SAP 78.8 != effective 76.0
- property **709817** (uprn 10094895444): £0 works but post SAP 79.6 != effective 77.0
- property **709818** (uprn 10092973960): £0 works but post SAP 77.6 != effective 74.0
- property **709819** (uprn 10012028763): £0 works but post SAP 83.3 != effective 82.0
- property **709820** (uprn 10093049867): £0 works but post SAP 78.7 != effective 75.0
- property **709821** (uprn 10093116336): £0 works but post SAP 79.9 != effective 78.0
- property **709823** (uprn 10093116334): £0 works but post SAP 79.0 != effective 78.0
- property **709824** (uprn 44042992): £0 works but post SAP 79.9 != effective 79.0
- property **709825** (uprn 10014314853): £0 works but post SAP 72.0 != effective 70.0
- property **709828** (uprn 10091636116): £0 works but post SAP 75.8 != effective 71.0
- property **709829** (uprn 10094601381): £0 works but post SAP 78.4 != effective 74.0
- property **709830** (uprn 10093049853): £0 works but post SAP 81.5 != effective 78.0
- property **709831** (uprn 10093390790): £0 works but post SAP 74.9 != effective 72.0
- property **709832** (uprn 10093116330): £0 works but post SAP 80.1 != effective 79.0
- property **709833** (uprn 10093116326): £0 works but post SAP 80.1 != effective 79.0
- property **709834** (uprn 10094601351): £0 works but post SAP 79.0 != effective 76.0
- property **709835** (uprn 10090317693): £0 works but post SAP 77.5 != effective 76.0
- property **709836** (uprn 10090034872): £0 works but post SAP 81.4 != effective 79.0
- property **709837** (uprn 10093115985): £0 works but post SAP 79.5 != effective 77.0
- property **709842** (uprn 202211170): £0 works but post SAP 82.1 != effective 79.0
- property **709845** (uprn 6701311): £0 works but post SAP 81.4 != effective 78.0
- property **709846** (uprn 10096399556): £0 works but post SAP 79.7 != effective 93.0
- … and 5574 more (see CSV)
## effective-lodged-divergence (LOW) — 1527
- property **709779** (uprn 10092970673): effective 61 vs lodged 86 (Δ-25, reason=pre_sap10)
- property **709802** (uprn 100020665611): effective 52 vs lodged 37 (Δ+15, reason=pre_sap10)
- property **709804** (uprn 10093388044): effective 33 vs lodged 93 (Δ-60, reason=pre_sap10)
- property **709815** (uprn 100090108846): effective 57 vs lodged 79 (Δ-22, reason=pre_sap10)
- property **709828** (uprn 10091636116): effective 71 vs lodged 88 (Δ-17, reason=pre_sap10)
- property **709860** (uprn 100061086424): effective 60 vs lodged 83 (Δ-23, reason=pre_sap10)
- property **709863** (uprn 10090342180): effective 39 vs lodged 78 (Δ-39, reason=pre_sap10)
- property **709874** (uprn 10093388053): effective 35 vs lodged 94 (Δ-59, reason=pre_sap10)
- property **709892** (uprn 10090343767): effective 75 vs lodged 91 (Δ-16, reason=pre_sap10)
- property **709945** (uprn 10090342181): effective 42 vs lodged 81 (Δ-39, reason=pre_sap10)
- property **709993** (uprn 15043874): effective 68 vs lodged 49 (Δ+19, reason=pre_sap10)
- property **710003** (uprn 10091636410): effective 71 vs lodged 86 (Δ-15, reason=pre_sap10)
- property **710009** (uprn 100022895379): effective 62 vs lodged 80 (Δ-18, reason=pre_sap10)
- property **710019** (uprn 10090342182): effective 44 vs lodged 80 (Δ-36, reason=pre_sap10)
- property **710025** (uprn 10093388055): effective 55 vs lodged 93 (Δ-38, reason=pre_sap10)
- property **710037** (uprn 100090108857): effective 56 vs lodged 86 (Δ-30, reason=pre_sap10)
- property **710091** (uprn 100061086427): effective 60 vs lodged 83 (Δ-23, reason=pre_sap10)
- property **710114** (uprn 10096026315): effective 74 vs lodged 89 (Δ-15, reason=pre_sap10)
- property **710134** (uprn 10096026271): effective 73 vs lodged 88 (Δ-15, reason=pre_sap10)
- property **710139** (uprn 10090342183): effective 41 vs lodged 77 (Δ-36, reason=pre_sap10)
- property **710144** (uprn 10014314832): effective 63 vs lodged 83 (Δ-20, reason=pre_sap10)
- property **710148** (uprn 10093388056): effective 57 vs lodged 94 (Δ-37, reason=pre_sap10)
- property **710191** (uprn 10090342184): effective 49 vs lodged 79 (Δ-30, reason=pre_sap10)
- property **710198** (uprn 10012138502): effective 65 vs lodged 85 (Δ-20, reason=pre_sap10)
- property **710199** (uprn 10093388057): effective 38 vs lodged 95 (Δ-57, reason=pre_sap10)
- property **710202** (uprn 10090342864): effective 68 vs lodged 84 (Δ-16, reason=pre_sap10)
- property **710244** (uprn 10010249676): effective 74 vs lodged 90 (Δ-16, reason=pre_sap10)
- property **710246** (uprn 100061086430): effective 59 vs lodged 83 (Δ-24, reason=pre_sap10)
- property **710250** (uprn 10090342185): effective 62 vs lodged 81 (Δ-19, reason=pre_sap10)
- property **710260** (uprn 10093388058): effective 47 vs lodged 95 (Δ-48, reason=pre_sap10)
- property **710261** (uprn 10090341825): effective 75 vs lodged 91 (Δ-16, reason=pre_sap10)
- property **710300** (uprn 10090341826): effective 75 vs lodged 91 (Δ-16, reason=pre_sap10)
- property **710342** (uprn 10090342187): effective 37 vs lodged 77 (Δ-40, reason=pre_sap10)
- property **710348** (uprn 10090341827): effective 76 vs lodged 91 (Δ-15, reason=pre_sap10)
- property **710429** (uprn 10093388045): effective 49 vs lodged 93 (Δ-44, reason=pre_sap10)
- property **710449** (uprn 100020993501): effective 56 vs lodged 5 (Δ+51, reason=pre_sap10)
- property **710491** (uprn 10014314835): effective 69 vs lodged 84 (Δ-15, reason=pre_sap10)
- property **710536** (uprn 100062482536): effective 38 vs lodged 53 (Δ-15, reason=pre_sap10)
- property **710640** (uprn 10014316004): effective 71 vs lodged 88 (Δ-17, reason=pre_sap10)
- property **710658** (uprn 10014316005): effective 70 vs lodged 88 (Δ-18, reason=pre_sap10)
- property **710659** (uprn 22061763): effective 50 vs lodged 70 (Δ-20, reason=pre_sap10)
- property **710664** (uprn 10096026322): effective 74 vs lodged 89 (Δ-15, reason=pre_sap10)
- property **710672** (uprn 200003378407): effective 48 vs lodged 28 (Δ+20, reason=pre_sap10)
- property **710683** (uprn 10014316006): effective 70 vs lodged 88 (Δ-18, reason=pre_sap10)
- property **710704** (uprn 10014316007): effective 71 vs lodged 88 (Δ-17, reason=pre_sap10)
- property **710745** (uprn 10093386244): effective 50 vs lodged 83 (Δ-33, reason=pre_sap10)
- property **710752** (uprn 10093388046): effective 47 vs lodged 94 (Δ-47, reason=pre_sap10)
- property **710779** (uprn 10091636118): effective 71 vs lodged 88 (Δ-17, reason=pre_sap10)
- property **710814** (uprn 10014316008): effective 71 vs lodged 88 (Δ-17, reason=pre_sap10)
- property **710837** (uprn 10014316009): effective 71 vs lodged 88 (Δ-17, reason=pre_sap10)
- … and 1477 more (see CSV)
## negative-bill-savings (LOW) — 100
- property **712847** (uprn 100061737192): energy_bill_savings £-30/yr on £16110 of works
- property **713453** (uprn 100061739869): energy_bill_savings £-68/yr on £14533 of works
- property **713721** (uprn 100061753373): energy_bill_savings £-18/yr on £14554 of works
- property **713743** (uprn 100060359906): energy_bill_savings £-98/yr on £18823 of works
- property **713791** (uprn 10013528635): energy_bill_savings £-130/yr on £1029 of works
- property **713970** (uprn 10013528640): energy_bill_savings £-130/yr on £1029 of works
- property **714001** (uprn 10013528641): energy_bill_savings £-130/yr on £1029 of works
- property **714038** (uprn 10013528642): energy_bill_savings £-130/yr on £1029 of works
- property **714373** (uprn 100062185281): energy_bill_savings £-113/yr on £14800 of works
- property **714420** (uprn 10010242243): energy_bill_savings £-162/yr on £1029 of works
- property **715227** (uprn 100061753375): energy_bill_savings £-18/yr on £14554 of works
- property **715561** (uprn 100061739874): energy_bill_savings £-69/yr on £14533 of works
- property **715999** (uprn 100061737204): energy_bill_savings £-13/yr on £14533 of works
- property **716169** (uprn 100061747915): energy_bill_savings £-53/yr on £14533 of works
- property **716251** (uprn 100061753377): energy_bill_savings £-18/yr on £14554 of works
- property **716548** (uprn 100061765632): energy_bill_savings £-70/yr on £14533 of works
- property **716811** (uprn 22106963): energy_bill_savings £-3/yr on £4785 of works
- property **717209** (uprn 100061753379): energy_bill_savings £-20/yr on £14554 of works
- property **717675** (uprn 6176752): energy_bill_savings £-75/yr on £15067 of works
- property **717998** (uprn 100061749651): energy_bill_savings £-7/yr on £14533 of works
- property **719002** (uprn 10002476550): energy_bill_savings £-101/yr on £14533 of works
- property **719091** (uprn 100061753365): energy_bill_savings £-46/yr on £14533 of works
- property **719449** (uprn 100061753383): energy_bill_savings £-18/yr on £14554 of works
- property **719680** (uprn 100061741246): energy_bill_savings £-34/yr on £17072 of works
- property **719811** (uprn 100060327562): energy_bill_savings £-92/yr on £14533 of works
- property **720349** (uprn 100021812910): energy_bill_savings £-122/yr on £1029 of works
- property **720364** (uprn 100061741682): energy_bill_savings £-51/yr on £15070 of works
- property **720800** (uprn 100061753387): energy_bill_savings £-20/yr on £14554 of works
- property **720889** (uprn 10023224588): energy_bill_savings £-172/yr on £1029 of works
- property **720989** (uprn 100061764553): energy_bill_savings £-143/yr on £14533 of works
- property **721034** (uprn 100061758484): energy_bill_savings £-145/yr on £15105 of works
- property **721070** (uprn 100061749663): energy_bill_savings £-69/yr on £14800 of works
- property **722402** (uprn 100061737194): energy_bill_savings £-73/yr on £14266 of works
- property **722448** (uprn 100061739862): energy_bill_savings £-68/yr on £14533 of works
- property **722732** (uprn 100061750203): energy_bill_savings £-155/yr on £16445 of works
- property **722808** (uprn 100062186150): energy_bill_savings £-61/yr on £14533 of works
- property **723367** (uprn 100061753394): energy_bill_savings £-56/yr on £14533 of works
- property **723503** (uprn 10010242632): energy_bill_savings £-112/yr on £1029 of works
- property **723540** (uprn 100061743541): energy_bill_savings £-35/yr on £14533 of works
- property **723771** (uprn 200001645519): energy_bill_savings £-58/yr on £14533 of works
- property **723782** (uprn 100061743542): energy_bill_savings £-30/yr on £17032 of works
- property **725039** (uprn 100061748331): energy_bill_savings £-4/yr on £14800 of works
- property **725350** (uprn 100061743145): energy_bill_savings £-189/yr on £15067 of works
- property **725715** (uprn 100061736694): energy_bill_savings £-42/yr on £14533 of works
- property **725731** (uprn 100061763962): energy_bill_savings £-71/yr on £14533 of works
- property **725988** (uprn 100061749671): energy_bill_savings £-13/yr on £14533 of works
- property **726184** (uprn 100061752891): energy_bill_savings £-66/yr on £14533 of works
- property **726268** (uprn 100061741268): energy_bill_savings £-76/yr on £14266 of works
- property **726271** (uprn 100061741692): energy_bill_savings £-63/yr on £14533 of works
- property **726302** (uprn 202141568): energy_bill_savings £-73/yr on £15721 of works
- … and 50 more (see CSV)
## unusually-high-post-sap (LOW) — 21
- property **714511** (uprn 100061761168): post SAP 100.0 (near band A) — confirm not over-credited
- property **716734** (uprn 10002469029): post SAP 100.0 (near band A) — confirm not over-credited
- property **716740** (uprn 100061753334): post SAP 100.0 (near band A) — confirm not over-credited
- property **717201** (uprn 100091206047): post SAP 100.0 (near band A) — confirm not over-credited
- property **718890** (uprn 100062344151): post SAP 100.0 (near band A) — confirm not over-credited
- property **719080** (uprn 100091206033): post SAP 100.0 (near band A) — confirm not over-credited
- property **719829** (uprn 100091206052): post SAP 100.0 (near band A) — confirm not over-credited
- property **721222** (uprn 100062480566): post SAP 98.6 (near band A) — confirm not over-credited
- property **723516** (uprn 100061741124): post SAP 100.0 (near band A) — confirm not over-credited
- property **725224** (uprn 100062480573): post SAP 95.3 (near band A) — confirm not over-credited
- property **725440** (uprn 100061746447): post SAP 100.0 (near band A) — confirm not over-credited
- property **725627** (uprn 10008885879): post SAP 99.6 (near band A) — confirm not over-credited
- property **726993** (uprn 100061757571): post SAP 100.0 (near band A) — confirm not over-credited
- property **727688** (uprn 100061761162): post SAP 97.6 (near band A) — confirm not over-credited
- property **727699** (uprn 200004784746): post SAP 100.0 (near band A) — confirm not over-credited
- property **729329** (uprn 100061749297): post SAP 99.2 (near band A) — confirm not over-credited
- property **729415** (uprn 100091206037): post SAP 100.0 (near band A) — confirm not over-credited
- property **732041** (uprn 100061761165): post SAP 97.9 (near band A) — confirm not over-credited
- property **732050** (uprn 100061764295): post SAP 98.1 (near band A) — confirm not over-credited
- property **740214** (uprn 100061762820): post SAP 99.4 (near band A) — confirm not over-credited
- property **740234** (uprn 100061761814): post SAP 100.0 (near band A) — confirm not over-credited
- property **742065** (uprn 10010206038): energy_bill_savings £-454/yr on £1043 of works
- property **742066** (uprn 10010206039): energy_bill_savings £-417/yr on £7876 of works
- property **742068** (uprn 10010206041): energy_bill_savings £-442/yr on £8510 of works
- property **742145** (uprn 5300022461): energy_bill_savings £-799/yr on £3196 of works
- property **742146** (uprn 5300022470): energy_bill_savings £-799/yr on £3196 of works
- property **742147** (uprn 5300022471): energy_bill_savings £-799/yr on £3196 of works
- property **742148** (uprn 5300022472): energy_bill_savings £-685/yr on £3270 of works
- property **742149** (uprn 5300022473): energy_bill_savings £-799/yr on £3196 of works
- property **742150** (uprn 5300022474): energy_bill_savings £-799/yr on £3196 of works
- property **742151** (uprn 5300022475): energy_bill_savings £-799/yr on £3196 of works
- property **742153** (uprn 5300022477): energy_bill_savings £-746/yr on £3196 of works
- property **742155** (uprn 5300022479): energy_bill_savings £-799/yr on £3196 of works
- property **742156** (uprn 5300022462): energy_bill_savings £-799/yr on £3196 of works
- property **742157** (uprn 5300022480): energy_bill_savings £-517/yr on £11607 of works
- property **742158** (uprn 5300022481): energy_bill_savings £-799/yr on £3196 of works
- property **742159** (uprn 5300022482): energy_bill_savings £-799/yr on £3196 of works
- property **742160** (uprn 5300022483): energy_bill_savings £-799/yr on £3196 of works
- property **742161** (uprn 5300022484): energy_bill_savings £-799/yr on £3196 of works
- property **742162** (uprn 5300022485): energy_bill_savings £-799/yr on £3196 of works
- property **742163** (uprn 5300022486): energy_bill_savings £-799/yr on £3196 of works
- property **742164** (uprn 5300022487): energy_bill_savings £-799/yr on £3196 of works
- property **742166** (uprn 5300022489): energy_bill_savings £-799/yr on £3196 of works
- property **742167** (uprn 5300022463): energy_bill_savings £-799/yr on £3196 of works
- property **742168** (uprn 5300022490): energy_bill_savings £-799/yr on £3196 of works
- property **742169** (uprn 5300022491): energy_bill_savings £-799/yr on £3196 of works
- property **742170** (uprn 5300022492): energy_bill_savings £-799/yr on £3196 of works
- property **742171** (uprn 5300022464): energy_bill_savings £-799/yr on £3196 of works
- property **742172** (uprn 5300022465): energy_bill_savings £-799/yr on £3196 of works
- property **742174** (uprn 5300022467): energy_bill_savings £-922/yr on £1057 of works
- property **742176** (uprn 5300022469): energy_bill_savings £-799/yr on £3196 of works
- property **742265** (uprn 10033526327): energy_bill_savings £-896/yr on £10682 of works

69
scripts/audit/neighbour_divergence.py
View file

@ -23,9 +23,15 @@ Writes ``neighbour_divergence.md`` + ``neighbour_divergence.csv`` and prints a
summary. Read-only: never writes to the DB.
A cohort is the set of a portfolio's properties sharing (postcode, property_type,
built_form). Within a cohort of >= 2, any member whose effective SAP is >=
``--min-gap`` points from the cohort median is flagged. Floor area is reported,
not keyed on, so the reviewer can discount a genuinely bigger/smaller neighbour;
built_form, main-heating fuel class). Within a cohort of >= 2, any member whose
effective SAP is >= ``--min-gap`` points from the cohort median is flagged.
Heating **fuel** is part of the key because electricity scores materially lower
in SAP than mains gas for identical fabric — mixing fuels in one cohort produces
cross-fuel false outliers (an electric dwelling flagged only for being electric
among gas neighbours). Keying on fuel ensures like-vs-like, so every flagged
divergence is a same-fuel one worth investigating (on portfolio 814 this refined
20 raw divergences to 17 same-fuel comparisons). Floor area is reported, not
keyed on, so the reviewer can discount a genuinely bigger/smaller neighbour;
promoting an area guard into the cohort key is a clean future change once the
false-positive rate is measured on a real portfolio (skill Phase 6).
"""
@ -67,6 +73,7 @@ class Neighbour:
floor_area_m2: Optional[float]
effective_sap: Optional[float]
effective_band: Optional[str]
main_fuel_type: Optional[int] # gov-API main-heating fuel code (None if unmapped)
@dataclass(frozen=True)
@ -84,16 +91,24 @@ _QUERY = text(
"""
SELECT p.id, p.uprn, p.postcode,
ep.property_type, ep.built_form, ep.total_floor_area_m2,
pbp.effective_sap_score, pbp.effective_epc_band
pbp.effective_sap_score, pbp.effective_epc_band,
mh.main_fuel_type
FROM property p
JOIN property_baseline_performance pbp ON pbp.property_id = p.id
LEFT JOIN LATERAL (
SELECT property_type, built_form, total_floor_area_m2
SELECT id, property_type, built_form, total_floor_area_m2
FROM epc_property e
WHERE e.property_id = p.id
ORDER BY e.id DESC
LIMIT 1
) ep ON TRUE
LEFT JOIN LATERAL (
SELECT main_fuel_type
FROM epc_main_heating_detail m
WHERE m.epc_property_id = ep.id
ORDER BY m.id
LIMIT 1
) mh ON TRUE
WHERE p.portfolio_id = :portfolio_id
ORDER BY p.id
"""
@ -117,18 +132,58 @@ def _load(portfolio_id: int) -> list[Neighbour]:
floor_area_m2=m["total_floor_area_m2"],
effective_sap=m["effective_sap_score"],
effective_band=m["effective_epc_band"],
main_fuel_type=_coerce_fuel(m["main_fuel_type"]),
)
)
return out
def _coerce_fuel(raw: object) -> Optional[int]:
"""The main-heating fuel code as an int, or None. ``main_fuel_type`` is a
JSONB column (int or str depending on the source mapper), so coerce defensively
— a non-numeric value groups as "unmapped" rather than raising."""
if raw is None:
return None
try:
return int(raw) # type: ignore[arg-type]
except (TypeError, ValueError):
return None
# Electricity main-heating fuel codes (gov-API / SAP Table 12): standard tariff
# (30), the off-peak tariffs (31-40), and code 29, which real electric certs in
# the corpus lodge for "room heaters, electric". Collapsing these to one class
# keeps all-electric dwellings comparable to each other; every OTHER fuel keeps
# its raw code as its own bucket (we don't guess a taxonomy for gas/oil/community).
_ELECTRICITY_FUEL_CODES: frozenset[int] = frozenset({29, 30, 31, 32, 33, 34, 35, 38, 40})
def _fuel_class(fuel: Optional[int]) -> str:
"""A coarse main-heating-fuel label for the cohort key. Electricity variants
collapse to one class; any other code is its own bucket; None is "unmapped"."""
if fuel is None:
return "fuel?"
if fuel in _ELECTRICITY_FUEL_CODES:
return "electric"
return f"fuel{fuel}"
def _cohort_key(n: Neighbour) -> Optional[str]:
"""A stable cohort label, or None when the neighbour can't be placed (no
postcode or no property type — it has no comparable peers to diverge from)."""
postcode or no property type — it has no comparable peers to diverge from).
The main-heating **fuel** is part of the key: electricity scores materially
lower in SAP than mains gas for identical fabric, so mixing fuels in a cohort
produces cross-fuel false outliers. Keying on fuel keeps like compared with
like, so a flagged divergence is a genuine same-fuel anomaly, not just an
electric dwelling sitting among gas neighbours."""
if not n.postcode or not n.property_type:
return None
form = n.built_form or "?"
return f"{n.postcode.strip().upper()} · {n.property_type} · {form}"
return (
f"{n.postcode.strip().upper()} · {n.property_type} · {form} "
f"· {_fuel_class(n.main_fuel_type)}"
)
def find_divergences(

33
tests/scripts/test_neighbour_divergence.py
View file

@ -11,6 +11,7 @@ def _n(
property_type: str = "Flat",
built_form: str = "Mid-Terrace",
floor_area_m2: float = 60.0,
main_fuel_type: Optional[int] = 26, # default: mains gas
) -> Neighbour:
return Neighbour(
property_id=property_id,
@ -21,6 +22,7 @@ def _n(
floor_area_m2=floor_area_m2,
effective_sap=effective_sap,
effective_band=None,
main_fuel_type=main_fuel_type,
)
@ -74,3 +76,34 @@ class TestFindDivergences:
# Assert
assert result == []
def test_electric_and_gas_are_separate_cohorts(self) -> None:
# Arrange — same postcode/type/form, but an electric dwelling (fuel 29)
# scores a band below its gas neighbours (fuel 26). Electricity is
# inherently lower-SAP, so this is expected stock, not a divergence.
mixed = [
_n(1, effective_sap=70.0, main_fuel_type=26), # gas
_n(2, effective_sap=72.0, main_fuel_type=26), # gas
_n(3, effective_sap=52.0, main_fuel_type=29), # electric — its own cohort
]
# Act
result = find_divergences(mixed, min_gap=12.0)
# Assert — the electric singleton has no same-fuel peers, so nothing fires.
assert result == []
def test_electric_outlier_still_flagged_within_its_own_fuel_cohort(self) -> None:
# Arrange — three electric dwellings; one genuinely diverges. Keying on
# fuel must not blind the detector to real within-fuel outliers.
electric = [
_n(1, effective_sap=55.0, main_fuel_type=29),
_n(2, effective_sap=57.0, main_fuel_type=30), # 30 also electric-class
_n(3, effective_sap=30.0, main_fuel_type=29), # Δ-25 vs median
]
# Act
result = find_divergences(electric, min_gap=12.0)
# Assert
assert [d.property_id for d in result] == [3]