Model/backend/epc_api/json_samples/real_life_examples
Jun-te Kim 283b311fcd Real Elmhurst RdSAP10 ground truth for one SAP-Schema-15.0 cert
Built UPRN 100010086084 (the largest gov-API-vs-lodged outlier from the
20-cert batch) in Elmhurst's accredited RdSAP10 tool to get real ground
truth, per feedback that lodged rating isn't a valid comparison target.

Elmhurst worksheet: SAP 46-48 (orientation-dependent), vs this engine's
53 on gov-API inputs -- a real ~5-7pt residual gap. Ruled out with
direct empirical tests: total_floor_area, missing party_wall_length,
region/climate (SAP rating always uses UK-average weather per Appendix
U -- confirmed inert), boiler/secondary efficiency (exact match, 66%/
63% both sides). Confirmed real but NOT blind-fixed (need more than one
cert's evidence, and a wall-U-value patch tested the wrong direction in
isolation): a wall-thickness-unknown U-value fallback mismatch (this
engine 1.70, Elmhurst's own "unknown" resolution 1.40) and a window
U-value divergence (1.85 vs 2.52 W/m2K for the same nominal glazing
pick). Single-window orientation confirmed a ~2pt partial contributor.

Also fixes a small, separate, evidenced gap the build surfaced: the
Elmhurst summary parser didn't recognise the live tool's "Medium
(131-170L)" cylinder-size label (only the bare "Medium").

Full write-up is in the RealCertExpectation comment for this cert in
test_real_cert_sap_accuracy.py and the worklist. Residual gap is
intentionally left open for follow-up, not force-closed.
2026-07-09 22:31:01 +00:00
..
RdSAP-Schema-16.2/uprn_100021969385 Add Elmhurst build script + validated result for uprn 100021969385 2026-07-08 12:38:26 +00:00
RdSAP-Schema-17.0 sap score and elmhirst mapper optimsaiation 2026-06-20 07:25:42 +00:00
RdSAP-Schema-17.1 updated sap scaema to take in inputs 2026-06-23 10:22:40 +00:00
RdSAP-Schema-18.0 Add UPRN 100020942571 (8 Booth Close) to the SAP accuracy corpus 2026-07-02 11:31:28 +00:00
RdSAP-Schema-19.0 Add SAP-18.0.0 + SAP-16.0 schema coverage; autonomous-run triage findings 2026-06-16 20:04:43 +00:00
RdSAP-Schema-20.0.0 test(accuracy): pin RdSAP-20.0.0 PV semi uprn_22086693 (PV-list fix corpus) 2026-06-23 16:13:34 +00:00
RdSAP-Schema-21.0.1 fix(rdsap): RdSAP 10 Table 13 200/280mm solid-brick wall boundary 2026-07-03 12:25:07 +00:00
SAP-Schema-15.0 Real Elmhurst RdSAP10 ground truth for one SAP-Schema-15.0 cert 2026-07-09 22:31:01 +00:00
SAP-Schema-16.0 test(accuracy): pin SAP-16.0 storage-flat uprn_10070004512 (built_form fix corpus) 2026-06-23 15:35:06 +00:00
SAP-Schema-16.1/uprn_100021943298 more examples 2026-06-19 09:51:49 +00:00
SAP-Schema-16.2 sap score and elmhirst mapper optimsaiation 2026-06-20 07:25:42 +00:00
SAP-Schema-16.3 data types 2026-06-23 12:42:53 +00:00
SAP-Schema-17.0 neighbouring properties added 2026-06-22 14:38:00 +00:00
SAP-Schema-17.1 sap score and elmhirst mapper optimsaiation 2026-06-20 07:25:42 +00:00
SAP-Schema-18.0.0 Add SAP-18.0.0 + SAP-16.0 schema coverage; autonomous-run triage findings 2026-06-16 20:04:43 +00:00
SAP-Schema-19.1.0 A full-SAP export-capable PV cert reproduces its lodged SAP 10.2 score 🟥 2026-07-03 12:05:04 +00:00