Property Construction
GEThttps://property-api.k8s.outra.co.uk/api/v2/property/construction
API keyJSON
Get CONSTRUCTION field group data for a property by UPRN. Provides building fabric and structure — construction type, walls and insulation, glazing, roof, floors and listed-building status — with confidence scores and modelled flags on the key fields.
Purpose
- Building fabric visibility — how a property is built and finished.
- Energy & risk context — glazing, walls, insulation and roof feed EPC modelling and insurance risk.
- Heritage awareness — listed status, grade and distance to the nearest listed building.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
uprn | integer | Required | Property UPRN. Positive integer, maximum 12 digits. Minimum 1, maximum 999999999999. |
curl 'https://property-api.k8s.outra.co.uk/api/v2/property/construction?uprn=100023336956' \
-H 'accept: application/json' \
-H 'Authorization: Api-Key {api_key}'Confidence & modelled flags
Fabric fields include companion FIELD$CONFIDENCE and FIELD$MODELLED keys. LISTED$GRADE gives the listing grade and LISTED_DISTANCE_METERS the distance to the nearest listed building.
Status codes
| Code | Description |
|---|---|
200 | Construction data retrieved successfully |
401 | Authentication failed or API key invalid |
422 | Request validation failed |
429 | Rate limit exceeded |
Field reference
Structure & fabricCONSTRUCTION
construction_type, year_built
Overall construction and age.
walls_type, wall_insulation
Wall construction and insulation.
windows_type, multi_glaze_proportion
Glazing.
primary_roof_type, number_of_floors
Roof and storeys.
number_habitable_rooms
Habitable room count.
HeritageCONSTRUCTION
listed
Whether the building is listed.
listed_grade
Listing grade (returned as
LISTED$GRADE).listed_distance_meters
Distance to the nearest listed building.
Typical use cases
EPC modelling & retrofit
Provide fabric inputs to estimate performance and retrofit options.
Insurance risk profiling
Expose characteristics that affect rebuild cost and risk.
Surveyor & lender tooling
Support inspections and lending with construction context.