Model/backend/epc_api/json_samples/SAP-Schema-17.1/epc.json
2026-04-09 14:47:54 +01:00

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{
"uprn": 12457,
"roofs": [
{
"description": "Average thermal transmittance 0.11 W/m²K",
"energy_efficiency_rating": 5,
"environmental_efficiency_rating": 5
}
],
"walls": [
{
"description": "Average thermal transmittance 0.27 W/m²K",
"energy_efficiency_rating": 5,
"environmental_efficiency_rating": 5
}
],
"floors": [
{
"description": "Average thermal transmittance 0.14 W/m²K",
"energy_efficiency_rating": 5,
"environmental_efficiency_rating": 5
}
],
"status": "entered",
"tenure": "ND",
"windows": {
"description": "High performance glazing",
"energy_efficiency_rating": 5,
"environmental_efficiency_rating": 5
},
"lighting": {
"description": "Low energy lighting in all fixed outlets",
"energy_efficiency_rating": 5,
"environmental_efficiency_rating": 5
},
"postcode": "A1 1AA",
"data_type": 2,
"hot_water": {
"description": "From main system",
"energy_efficiency_rating": 4,
"environmental_efficiency_rating": 4
},
"post_town": "Town",
"built_form": 1,
"living_area": 20.36,
"orientation": 1,
"region_code": 6,
"report_type": 3,
"sap_heating": {
"thermal_store": 1,
"water_fuel_type": 1,
"water_heating_code": 901,
"hot_water_store_size": 180,
"main_heating_details": [
{
"main_fuel_type": 1,
"heat_emitter_type": 1,
"emitter_temperature": 1,
"is_flue_fan_present": "true",
"main_heating_number": 1,
"main_heating_control": 2110,
"is_interlocked_system": "true",
"main_heating_category": 2,
"main_heating_fraction": 1,
"main_heating_flue_type": 2,
"central_heating_pump_age": 2,
"main_heating_data_source": 1,
"main_heating_index_number": 18042,
"has_separate_delayed_start": "true",
"load_or_weather_compensation": 0,
"is_central_heating_pump_in_heated_space": "true"
}
],
"has_hot_water_cylinder": "true",
"has_cylinder_thermostat": "true",
"hot_water_store_heat_loss": 1.2,
"has_fixed_air_conditioning": "false",
"secondary_heating_category": 1,
"is_cylinder_in_heated_space": "true",
"primary_pipework_insulation": 4,
"is_hot_water_separately_timed": "true",
"hot_water_store_heat_loss_source": 2
},
"sap_version": 9.92,
"schema_type": "SAP-Schema-17.1",
"uprn_source": "Energy Assessor",
"country_code": "ENG",
"main_heating": [
{
"description": "Boiler and radiators, mains gas",
"energy_efficiency_rating": 4,
"environmental_efficiency_rating": 4
}
],
"air_tightness": {
"description": "Air permeability 4.9 m³/h.m² (as tested)",
"energy_efficiency_rating": 4,
"environmental_efficiency_rating": 4
},
"dwelling_type": "Detached house",
"language_code": 1,
"property_type": 0,
"address_line_1": "47, Address Lane",
"address_line_2": "Long Itchington",
"assessment_date": "2020-08-17",
"assessment_type": "SAP",
"completion_date": "2020-08-17",
"inspection_date": "2020-08-17",
"sap_ventilation": {
"psv_count": 0,
"pressure_test": 1,
"air_permeability": 4.94,
"open_flues_count": 0,
"ventilation_type": 1,
"extract_fans_count": 5,
"open_fireplaces_count": 0,
"sheltered_sides_count": 1,
"flueless_gas_fires_count": 0
},
"design_water_use": 1,
"sap_data_version": 9.92,
"sap_flat_details": {
"level": 1
},
"total_floor_area": 146,
"transaction_type": 6,
"conservatory_type": 1,
"registration_date": "2020-08-17",
"sap_energy_source": {
"electricity_tariff": 1,
"wind_turbines_count": 0,
"wind_turbine_terrain_type": 2,
"fixed_lighting_outlets_count": 14,
"low_energy_fixed_lighting_outlets_count": 14,
"low_energy_fixed_lighting_outlets_percentage": 100
},
"sap_opening_types": [
{
"name": "Opening Type 1",
"type": 2,
"u_value": 1.5,
"data_source": 2,
"glazing_type": 4
},
{
"name": "Opening Type 2",
"type": 4,
"u_value": 1.41,
"data_source": 2,
"frame_factor": 0.7,
"glazing_type": 4,
"solar_transmittance": 0.71
},
{
"name": "Opening Type 4",
"type": 4,
"u_value": 1.41,
"data_source": 2,
"frame_factor": 0.7,
"glazing_type": 4,
"solar_transmittance": 0.72
}
],
"secondary_heating": {
"description": "None",
"energy_efficiency_rating": 0,
"environmental_efficiency_rating": 0
},
"lzc_energy_sources": [
11
],
"sap_building_parts": [
{
"sap_roofs": [
{
"name": "Roof 1",
"u_value": 0.11,
"roof_type": 2,
"description": "400mm Mineral Wool",
"total_roof_area": 72.6
},
{
"name": "Roof 2",
"u_value": 0.17,
"roof_type": 2,
"description": "Flat Roof",
"total_roof_area": 1.07
}
],
"sap_walls": [
{
"name": "External Wall 1",
"u_value": 0.27,
"wall_type": 2,
"description": "50mm A Platinum",
"total_wall_area": 186.21,
"is_curtain_walling": "false"
}
],
"identifier": "Main Dwelling",
"overshading": 2,
"sap_openings": [
{
"name": "D1",
"type": "Opening Type 1",
"width": 1.01,
"height": 2.33,
"location": "External Wall 1",
"orientation": 0
},
{
"name": "D2",
"type": "Opening Type 2",
"width": 2.4,
"height": 2.1,
"location": "External Wall 1",
"orientation": 6
},
{
"name": "D3",
"type": "Opening Type 2",
"width": 2.4,
"height": 2.1,
"location": "External Wall 1",
"orientation": 4
},
{
"name": "W1",
"type": "Opening Type 4",
"width": 1.14,
"height": 1.5,
"location": "External Wall 1",
"orientation": 2
},
{
"name": "W1a",
"type": "Opening Type 4",
"width": 0.56,
"height": 1.5,
"location": "External Wall 1",
"orientation": 3
},
{
"name": "W1b",
"type": "Opening Type 4",
"width": 0.56,
"height": 1.5,
"location": "External Wall 1",
"orientation": 1
},
{
"name": "W2",
"type": "Opening Type 4",
"width": 1.14,
"height": 1.5,
"location": "External Wall 1",
"orientation": 2
},
{
"name": "W2a",
"type": "Opening Type 4",
"width": 0.56,
"height": 1.5,
"location": "External Wall 1",
"orientation": 3
},
{
"name": "W2b",
"type": "Opening Type 4",
"width": 0.56,
"height": 1.5,
"location": "External Wall 1",
"orientation": 1
},
{
"name": "W3",
"type": "Opening Type 4",
"width": 1.02,
"height": 1.35,
"location": "External Wall 1",
"orientation": 8
},
{
"name": "W4",
"type": "Opening Type 4",
"width": 1.02,
"height": 1.35,
"location": "External Wall 1",
"orientation": 8
},
{
"name": "W5",
"type": "Opening Type 4",
"width": 1.02,
"height": 1.35,
"location": "External Wall 1",
"orientation": 8
},
{
"name": "W6",
"type": "Opening Type 4",
"width": 1.02,
"height": 1.35,
"location": "External Wall 1",
"orientation": 6
},
{
"name": "W7",
"type": "Opening Type 4",
"width": 1.02,
"height": 1.35,
"location": "External Wall 1",
"orientation": 2
},
{
"name": "W8",
"type": "Opening Type 4",
"width": 1.02,
"height": 1.2,
"location": "External Wall 1",
"orientation": 2
},
{
"name": "W9",
"type": "Opening Type 4",
"width": 1.02,
"height": 1.35,
"location": "External Wall 1",
"orientation": 2
},
{
"name": "W10",
"type": "Opening Type 4",
"width": 1.02,
"height": 1.35,
"location": "External Wall 1",
"orientation": 8
},
{
"name": "W11",
"type": "Opening Type 4",
"width": 1.02,
"height": 1.35,
"location": "External Wall 1",
"orientation": 8
},
{
"name": "W12",
"type": "Opening Type 4",
"width": 1.02,
"height": 1.35,
"location": "External Wall 1",
"orientation": 8
},
{
"name": "W13",
"type": "Opening Type 4",
"width": 0.63,
"height": 1.05,
"location": "External Wall 1",
"orientation": 4
},
{
"name": "W14",
"type": "Opening Type 4",
"width": 1.02,
"height": 1.35,
"location": "External Wall 1",
"orientation": 6
}
],
"construction_year": 2017,
"sap_thermal_bridges": {
"thermal_bridges": [
{
"length": 21.8,
"psi_value": 0.211,
"psi_value_source": 3,
"thermal_bridge_type": "E2"
},
{
"length": 6.12,
"psi_value": 0.049,
"psi_value_source": 3,
"thermal_bridge_type": "E2"
},
{
"length": 20.79,
"psi_value": 0.023,
"psi_value_source": 3,
"thermal_bridge_type": "E3"
},
{
"length": 63.76,
"psi_value": 0.028,
"psi_value_source": 3,
"thermal_bridge_type": "E4"
},
{
"length": 38.46,
"psi_value": 0.047,
"psi_value_source": 3,
"thermal_bridge_type": "E5"
},
{
"length": 3.48,
"psi_value": 0.14,
"psi_value_source": 4,
"thermal_bridge_type": "E6"
},
{
"length": 34.33,
"psi_value": 0.003,
"psi_value_source": 3,
"thermal_bridge_type": "E6"
},
{
"length": 26.68,
"psi_value": 0.094,
"psi_value_source": 3,
"thermal_bridge_type": "E10"
},
{
"length": 9.4,
"psi_value": 0.049,
"psi_value_source": 3,
"thermal_bridge_type": "E12"
},
{
"length": 4.41,
"psi_value": 0.08,
"psi_value_source": 4,
"thermal_bridge_type": "E14"
},
{
"length": 34.2,
"psi_value": 0.047,
"psi_value_source": 3,
"thermal_bridge_type": "E16"
},
{
"length": 15.36,
"psi_value": -0.097,
"psi_value_source": 3,
"thermal_bridge_type": "E17"
}
],
"thermal_bridge_code": 5
},
"building_part_number": 1,
"sap_floor_dimensions": [
{
"storey": 0,
"u_value": 0.14,
"floor_type": 2,
"description": "B&B",
"storey_height": 2.33,
"heat_loss_area": 73.67,
"total_floor_area": 73.67
},
{
"storey": 1,
"u_value": 0,
"floor_type": 3,
"storey_height": 2.56,
"heat_loss_area": 0,
"total_floor_area": 72.6
}
],
"thermal_mass_parameter": 134.43
}
],
"heating_cost_current": {
"value": 339,
"currency": "GBP"
},
"co2_emissions_current": 2.1,
"energy_rating_average": 60,
"energy_rating_current": 85,
"lighting_cost_current": {
"value": 93,
"currency": "GBP"
},
"main_heating_controls": [
{
"description": "Time and temperature zone control",
"energy_efficiency_rating": 5,
"environmental_efficiency_rating": 5
}
],
"has_hot_water_cylinder": "true",
"heating_cost_potential": {
"value": 340,
"currency": "GBP"
},
"hot_water_cost_current": {
"value": 99,
"currency": "GBP"
},
"suggested_improvements": [
{
"sequence": 1,
"typical_saving": {
"value": 43,
"currency": "GBP"
},
"indicative_cost": "£4,000 - £6,000",
"improvement_type": "N",
"improvement_details": {
"improvement_number": 19
},
"improvement_category": 5,
"energy_performance_rating": 86,
"environmental_impact_rating": 87
},
{
"sequence": 2,
"typical_saving": {
"value": 340,
"currency": "GBP"
},
"indicative_cost": "£3,500 - £5,500",
"improvement_type": "U",
"improvement_details": {
"improvement_number": 34
},
"improvement_category": 5,
"energy_performance_rating": 93,
"environmental_impact_rating": 93
}
],
"co2_emissions_potential": 0.9,
"energy_rating_potential": 93,
"lighting_cost_potential": {
"value": 93,
"currency": "GBP"
},
"schema_version_original": "LIG-17.0",
"hot_water_cost_potential": {
"value": 55,
"currency": "GBP"
},
"is_in_smoke_control_area": "unknown",
"renewable_heat_incentive": {
"rhi_new_dwelling": {
"space_heating": 5361,
"water_heating": 2143
}
},
"seller_commission_report": "Y",
"energy_consumption_current": 82,
"has_fixed_air_conditioning": "false",
"multiple_glazed_percentage": 100,
"calculation_software_version": "4.12r02",
"energy_consumption_potential": 34,
"environmental_impact_current": 85,
"current_energy_efficiency_band": "B",
"environmental_impact_potential": 93,
"has_heated_separate_conservatory": "false",
"potential_energy_efficiency_band": "A",
"co2_emissions_current_per_floor_area": 14
}