{
  "uprn": 12457,
  "roofs": [
    {"description": "Pitched, 25 mm loft insulation", "energy_efficiency_rating": 2, "environmental_efficiency_rating": 2},
    {"description": "Pitched, 250 mm loft insulation", "energy_efficiency_rating": 4, "environmental_efficiency_rating": 4}
  ],
  "walls": [
    {"description": "Solid brick, as built, no insulation (assumed)", "energy_efficiency_rating": 1, "environmental_efficiency_rating": 1},
    {"description": "Cavity wall, as built, insulated (assumed)", "energy_efficiency_rating": 4, "environmental_efficiency_rating": 4}
  ],
  "floors": [
    {"description": "Suspended, no insulation (assumed)", "energy_efficiency_rating": 0, "environmental_efficiency_rating": 0},
    {"description": "Solid, insulated (assumed)", "energy_efficiency_rating": 0, "environmental_efficiency_rating": 0}
  ],
  "status": "entered",
  "tenure": 1,
  "window": {"description": "Fully double glazed", "energy_efficiency_rating": 3, "environmental_efficiency_rating": 3},
  "addendum": {"stone_walls": "true", "system_build": "true", "addendum_numbers": [1, 8]},
  "lighting": {"description": "Low energy lighting in 50% of fixed outlets", "energy_efficiency_rating": 4, "environmental_efficiency_rating": 4},
  "postcode": "A0 0AA",
  "hot_water": {"description": "From main system", "energy_efficiency_rating": 4, "environmental_efficiency_rating": 4},
  "post_town": "Whitbury",
  "built_form": 2,
  "door_count": 3,
  "region_code": 1,
  "report_type": 2,
  "sap_heating": {
    "cylinder_size": 1,
    "shower_outlets": {
      "shower_outlet": {"shower_wwhrs": 1, "shower_outlet_type": 1}
    },
    "water_heating_code": 901,
    "water_heating_fuel": 26,
    "instantaneous_wwhrs": {"wwhrs_index_number1": 1, "wwhrs_index_number2": 2},
    "secondary_fuel_type": 25,
    "main_heating_details": [
      {
        "has_fghrs": "N",
        "main_fuel_type": 26,
        "boiler_flue_type": 2,
        "fan_flue_present": "N",
        "heat_emitter_type": 1,
        "emitter_temperature": 0,
        "main_heating_number": 1,
        "boiler_ignition_type": 1,
        "main_heating_control": 2106,
        "main_heating_category": 2,
        "main_heating_fraction": 1,
        "sap_main_heating_code": 101,
        "central_heating_pump_age": 0,
        "main_heating_data_source": 1,
        "main_heating_index_number": 17507
      }
    ],
    "immersion_heating_type": "NA",
    "has_fixed_air_conditioning": "false"
  },
  "sap_version": 10.2,
  "sap_windows": [
    {
      "pvc_frame": "false",
      "glazing_gap": 6,
      "orientation": 1,
      "window_type": 2,
      "frame_factor": 1.0,
      "glazing_type": 14,
      "window_width": 1.2,
      "window_height": 2.0,
      "draught_proofed": "true",
      "window_location": 0,
      "window_wall_type": 6,
      "permanent_shutters_present": "N",
      "window_transmission_details": {"u_value": 1.0, "data_source": 2, "solar_transmittance": 1.0},
      "permanent_shutters_insulated": "N"
    }
  ],
  "schema_type": "RdSAP-Schema-21.0.0",
  "uprn_source": "Energy Assessor",
  "country_code": "ENG",
  "main_heating": [
    {"description": "Boiler and radiators, anthracite", "energy_efficiency_rating": 3, "environmental_efficiency_rating": 1},
    {"description": "Boiler and radiators, mains gas", "energy_efficiency_rating": 4, "environmental_efficiency_rating": 4}
  ],
  "dwelling_type": "Mid-terrace house",
  "language_code": 1,
  "pressure_test": 6,
  "property_type": 0,
  "address_line_1": "1 Some Street",
  "assessment_type": "RdSAP",
  "completion_date": "2023-12-01",
  "inspection_date": "2023-12-01",
  "wet_rooms_count": 0,
  "extensions_count": 0,
  "measurement_type": 1,
  "sap_flat_details": {
    "level": 1,
    "top_storey": "N",
    "storey_count": 3,
    "flat_location": 1,
    "heat_loss_corridor": 2,
    "unheated_corridor_length": 10
  },
  "total_floor_area": 55,
  "transaction_type": 16,
  "conservatory_type": 1,
  "heated_room_count": 5,
  "registration_date": "2023-12-01",
  "sap_energy_source": {
    "mains_gas": "Y",
    "meter_type": 2,
    "pv_batteries": {"pv_battery": {"battery_capacity": 5}},
    "pv_connection": 0,
    "pv_battery_count": 1,
    "photovoltaic_supply": {"none_or_no_details": {"percent_roof_area": 0}},
    "wind_turbines_count": 0,
    "wind_turbine_details": {"hub_height": 0, "rotor_diameter": 0},
    "gas_smart_meter_present": "false",
    "is_dwelling_export_capable": "false",
    "wind_turbines_terrain_type": 4,
    "electricity_smart_meter_present": "true"
  },
  "secondary_heating": {"description": "Room heaters, electric", "energy_efficiency_rating": 0, "environmental_efficiency_rating": 0},
  "sap_building_parts": [
    {
      "identifier": "Main Dwelling",
      "wall_dry_lined": "N",
      "floor_heat_loss": 7,
      "sap_room_in_roof": {"floor_area": 100, "construction_age_band": "B"},
      "roof_construction": 4,
      "wall_construction": 4,
      "building_part_number": 1,
      "sap_floor_dimensions": [
        {
          "floor": 0,
          "room_height": {"value": 2.45, "quantity": "metres"},
          "floor_insulation": 1,
          "total_floor_area": {"value": 45.82, "quantity": "square metres"},
          "party_wall_length": {"value": 7.9, "quantity": "metres"},
          "floor_construction": 1,
          "heat_loss_perimeter": {"value": 19.5, "quantity": "metres"}
        }
      ],
      "wall_insulation_type": 2,
      "construction_age_band": "M",
      "sap_alternative_wall_1": {
        "wall_area": 10.4,
        "wall_dry_lined": "N",
        "wall_construction": 4,
        "wall_insulation_type": 2,
        "wall_thickness_measured": "N"
      },
      "sap_alternative_wall_2": {
        "wall_area": 10.8,
        "wall_dry_lined": "N",
        "wall_construction": 4,
        "wall_insulation_type": 2,
        "wall_thickness_measured": "N"
      },
      "party_wall_construction": 0,
      "wall_thickness_measured": "N",
      "roof_insulation_location": 2,
      "roof_insulation_thickness": "200mm",
      "wall_insulation_thickness": "NI",
      "floor_insulation_thickness": "NI"
    }
  ],
  "open_chimneys_count": 1,
  "solar_water_heating": "N",
  "habitable_room_count": 5,
  "heating_cost_current": 365.98,
  "insulated_door_count": 2,
  "co2_emissions_current": 2.4,
  "energy_rating_average": 60,
  "energy_rating_current": 50,
  "lighting_cost_current": 123.45,
  "main_heating_controls": [
    {"description": "Programmer, room thermostat and TRVs", "energy_efficiency_rating": 4, "environmental_efficiency_rating": 4},
    {"description": "Time and temperature zone control", "energy_efficiency_rating": 5, "environmental_efficiency_rating": 5}
  ],
  "has_hot_water_cylinder": "true",
  "heating_cost_potential": 250.34,
  "hot_water_cost_current": 200.4,
  "insulated_door_u_value": 3,
  "mechanical_ventilation": 6,
  "percent_draughtproofed": 100,
  "suggested_improvements": [
    {
      "sequence": 1,
      "typical_saving": 360,
      "indicative_cost": "£100 - £350",
      "improvement_type": "Z3",
      "improvement_details": {"improvement_number": 5},
      "improvement_category": 6,
      "energy_performance_rating": 50,
      "environmental_impact_rating": 50
    },
    {
      "sequence": 3,
      "typical_saving": 99,
      "indicative_cost": 1000,
      "improvement_type": "Z2",
      "improvement_details": {
        "improvement_texts": {"improvement_description": "Improvement desc"}
      },
      "improvement_category": 2,
      "energy_performance_rating": 60,
      "environmental_impact_rating": 64
    }
  ],
  "co2_emissions_potential": 1.4,
  "energy_rating_potential": 72,
  "lighting_cost_potential": 84.23,
  "schema_version_original": "SAP-19.0",
  "hot_water_cost_potential": 180.43,
  "renewable_heat_incentive": {
    "water_heating": 2285,
    "impact_of_loft_insulation": -2114,
    "impact_of_cavity_insulation": -122,
    "impact_of_solid_wall_insulation": -3560,
    "space_heating_existing_dwelling": 13120
  },
  "draughtproofed_door_count": 1,
  "mechanical_vent_duct_type": 3,
  "energy_consumption_current": 230,
  "has_fixed_air_conditioning": "false",
  "multiple_glazed_proportion": 100,
  "calculation_software_version": "13.05r16",
  "energy_consumption_potential": 88,
  "environmental_impact_current": 52,
  "windows_transmission_details": {"u_value": 2, "data_source": 2, "solar_transmittance": 0.72},
  "cfl_fixed_lighting_bulbs_count": 5,
  "current_energy_efficiency_band": "E",
  "environmental_impact_potential": 74,
  "led_fixed_lighting_bulbs_count": 10,
  "mechanical_vent_duct_placement": 2,
  "mechanical_vent_duct_insulation": 2,
  "potential_energy_efficiency_band": "C",
  "pressure_test_certificate_number": 0,
  "mechanical_ventilation_index_number": 12,
  "co2_emissions_current_per_floor_area": 20,
  "low_energy_fixed_lighting_bulbs_count": 16,
  "mechanical_vent_duct_insulation_level": 2,
  "mechanical_vent_measured_installation": "false",
  "incandescent_fixed_lighting_bulbs_count": 5
}
