Model/tests/fixtures/epc_prediction/GU12ND/cert-30e6ad17ace1.json
Khalim Conn-Kowlessar 008c1922c4 feat(epc-prediction): anonymised Tier-1 fixture + builder (ADR-0030)
The committed gate needs frozen, reproducible data without dumping real UK
addresses into the repo. Add:
- harness anonymise_payload + stable_hash: hash street address + cert number
  into opaque, dedup-stable tokens; blank secondary address lines + post_town;
  keep postcode + all component/lodged fields (gov data is OGL). Unit-tested.
- scripts/build_epc_prediction_fixture.py: curate qualifying postcodes (>=1
  SAP 10.2 target + >=2 distinct addresses) from the local scratch corpus,
  anonymise, freeze under tests/fixtures/epc_prediction/.
- The frozen fixture: 15 postcodes / 280 certs / 36 SAP-10.2 targets.
  Verified no plaintext address_line_1 and post_town all blank.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-14 09:17:27 +00:00

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{"uprn": 100061404212, "roofs": [{"description": {"value": "Pitched, 150 mm loft insulation", "language": "1"}, "energy_efficiency_rating": 4, "environmental_efficiency_rating": 4}], "walls": [{"description": {"value": "Cavity wall, filled cavity", "language": "1"}, "energy_efficiency_rating": 4, "environmental_efficiency_rating": 4}], "floors": [{"description": {"value": "Suspended, no insulation (assumed)", "language": "1"}, "energy_efficiency_rating": 0, "environmental_efficiency_rating": 0}], "status": "entered", "tenure": 1, "window": {"description": {"value": "Fully double glazed", "language": "1"}, "energy_efficiency_rating": 3, "environmental_efficiency_rating": 3}, "lighting": {"description": {"value": "Low energy lighting in 67% of fixed outlets", "language": "1"}, "energy_efficiency_rating": 4, "environmental_efficiency_rating": 4}, "postcode": "GU1 2ND", "hot_water": {"description": {"value": "From main system", "language": "1"}, "energy_efficiency_rating": 4, "environmental_efficiency_rating": 4}, "post_town": "", "built_form": 1, "created_at": "2017-06-08 11:33:16.000000", "door_count": 2, "glazed_area": 1, "glazing_gap": "16+", "region_code": 17, "report_type": 2, "sap_heating": {"cylinder_size": 3, "water_heating_code": 901, "water_heating_fuel": 26, "cylinder_thermostat": "Y", "instantaneous_wwhrs": {"rooms_with_bath_and_or_shower": 1, "rooms_with_mixer_shower_no_bath": 0, "rooms_with_bath_and_mixer_shower": 0}, "secondary_fuel_type": 29, "main_heating_details": [{"has_fghrs": "N", "main_fuel_type": 26, "boiler_flue_type": 2, "fan_flue_present": "Y", "heat_emitter_type": 1, "emitter_temperature": "NA", "main_heating_number": 1, "main_heating_control": 2104, "main_heating_category": 2, "main_heating_fraction": 1, "mcs_installed_heat_pump": "false", "central_heating_pump_age": 1, "main_heating_data_source": 1, "main_heating_index_number": 4052}], "immersion_heating_type": "NA", "secondary_heating_type": 691, "cylinder_insulation_type": 1, "has_fixed_air_conditioning": "false", "cylinder_insulation_thickness": 38}, "sap_version": 9.92, "schema_type": "RdSAP-Schema-17.1", "uprn_source": "Energy Assessor", "country_code": "EAW", "main_heating": [{"description": {"value": "Boiler and radiators, mains gas", "language": "1"}, "energy_efficiency_rating": 4, "environmental_efficiency_rating": 4}], "dwelling_type": {"value": "Detached bungalow", "language": "1"}, "language_code": 1, "property_type": 1, "address_line_1": "addr-c609d53ea015", "assessment_type": "RdSAP", "completion_date": "2017-06-08", "inspection_date": "2017-06-08", "extensions_count": 0, "measurement_type": 1, "total_floor_area": 72, "transaction_type": 1, "conservatory_type": 1, "heated_room_count": 4, "pvc_window_frames": "true", "registration_date": "2017-06-08", "sap_energy_source": {"mains_gas": "Y", "meter_type": 2, "photovoltaic_supply": {"none_or_no_details": {"pv_connection": 0, "percent_roof_area": 0}}, "wind_turbines_count": 0, "wind_turbines_terrain_type": 1}, "secondary_heating": {"description": {"value": "Room heaters, electric", "language": "1"}, "energy_efficiency_rating": 0, "environmental_efficiency_rating": 0}, "sap_building_parts": [{"identifier": "Main Dwelling", "wall_dry_lined": "N", "wall_thickness": 280, "floor_heat_loss": 7, "roof_construction": 4, "wall_construction": 4, "building_part_number": 1, "sap_floor_dimensions": [{"floor": 0, "room_height": {"value": 2.41, "quantity": "metres"}, "floor_insulation": 1, "total_floor_area": {"value": 71.87, "quantity": "square metres"}, "party_wall_length": 0, "floor_construction": 2, "heat_loss_perimeter": {"value": 39.64, "quantity": "metres"}}], "wall_insulation_type": 2, "construction_age_band": "D", "party_wall_construction": "NA", "wall_thickness_measured": "Y", "roof_insulation_location": 2, "roof_insulation_thickness": "150mm", "wall_insulation_thickness": "NI"}], "low_energy_lighting": 67, "solar_water_heating": "N", "habitable_room_count": 4, "heating_cost_current": {"value": 685, "currency": "GBP"}, "insulated_door_count": 0, "co2_emissions_current": 3.8, "energy_rating_average": 60, "energy_rating_current": 57, "lighting_cost_current": {"value": 66, "currency": "GBP"}, "main_heating_controls": [{"description": {"value": "Programmer and room thermostat", "language": "1"}, "energy_efficiency_rating": 3, "environmental_efficiency_rating": 3}], "multiple_glazing_type": 1, "open_fireplaces_count": 0, "has_hot_water_cylinder": "true", "heating_cost_potential": {"value": 488, "currency": "GBP"}, "hot_water_cost_current": {"value": 160, "currency": "GBP"}, "mechanical_ventilation": 0, "percent_draughtproofed": 100, "suggested_improvements": [{"sequence": 1, "typical_saving": {"value": 28, "currency": "GBP"}, "indicative_cost": 350, "improvement_type": "A", "improvement_details": {"improvement_number": 5}, "improvement_category": 5, "energy_performance_rating": 58, "environmental_impact_rating": 55}, {"sequence": 2, "typical_saving": {"value": 107, "currency": "GBP"}, "indicative_cost": "1,200", "improvement_type": "W1", "improvement_details": {"improvement_number": 57}, "improvement_category": 5, "energy_performance_rating": 63, "environmental_impact_rating": 61}, {"sequence": 3, "typical_saving": {"value": 14, "currency": "GBP"}, "indicative_cost": 20, "improvement_type": "E", "improvement_details": {"improvement_number": 35}, "improvement_category": 5, "energy_performance_rating": 64, "environmental_impact_rating": 61}, {"sequence": 4, "typical_saving": {"value": 28, "currency": "GBP"}, "indicative_cost": 450, "improvement_type": "G", "improvement_details": {"improvement_number": 13}, "improvement_category": 5, "energy_performance_rating": 65, "environmental_impact_rating": 63}, {"sequence": 5, "typical_saving": {"value": 81, "currency": "GBP"}, "indicative_cost": "3,000", "improvement_type": "I", "improvement_details": {"improvement_number": 20}, "improvement_category": 5, "energy_performance_rating": 68, "environmental_impact_rating": 68}, {"sequence": 6, "typical_saving": {"value": 45, "currency": "GBP"}, "indicative_cost": "6,000", "improvement_type": "N", "improvement_details": {"improvement_number": 19}, "improvement_category": 5, "energy_performance_rating": 70, "environmental_impact_rating": 71}, {"sequence": 7, "typical_saving": {"value": 286, "currency": "GBP"}, "indicative_cost": "8,000", "improvement_type": "U", "improvement_details": {"improvement_number": 34}, "improvement_category": 5, "energy_performance_rating": 82, "environmental_impact_rating": 81}], "co2_emissions_potential": 1.4, "energy_rating_potential": 82, "lighting_cost_potential": {"value": 50, "currency": "GBP"}, "schema_version_original": "LIG-17.0", "alternative_improvements": [{"sequence": 1, "typical_saving": {"value": 79, "currency": "GBP"}, "improvement_type": "J2", "improvement_details": {"improvement_number": 54}, "improvement_category": 6, "energy_performance_rating": 68, "environmental_impact_rating": 90}, {"sequence": 2, "typical_saving": {"value": 79, "currency": "GBP"}, "improvement_type": "Z1", "improvement_details": {"improvement_number": 51}, "improvement_category": 6, "energy_performance_rating": 70, "environmental_impact_rating": 73}, {"sequence": 3, "typical_saving": {"value": 137, "currency": "GBP"}, "improvement_type": "Z3", "improvement_details": {"improvement_number": 53}, "improvement_category": 6, "energy_performance_rating": 72, "environmental_impact_rating": 67}], "hot_water_cost_potential": {"value": 71, "currency": "GBP"}, "renewable_heat_incentive": {"water_heating": 2720, "impact_of_loft_insulation": -433, "space_heating_existing_dwelling": 8747}, "energy_consumption_current": 302, "has_fixed_air_conditioning": "false", "multiple_glazed_proportion": 100, "calculation_software_version": "1.0.x", "energy_consumption_potential": 107, "environmental_impact_current": 53, "fixed_lighting_outlets_count": 12, "current_energy_efficiency_band": "D", "environmental_impact_potential": 81, "has_heated_separate_conservatory": "false", "potential_energy_efficiency_band": "B", "co2_emissions_current_per_floor_area": 53, "low_energy_fixed_lighting_outlets_count": 8}