Solutions: Surveyors
Property data for surveyors
Comparable sold prices, EPC floor area, planning constraints, council tax band, and flood risk: everything needed to support a RICS Red Book valuation, via a single API call per UPRN. No more manual Land Registry or portal searches.
What it covers
What's in the API for surveyors
Comparable sold prices
Last 20+ transactions within configurable radius, matched by property type. Price per sqm, floor area, EPC rating, sale date, distance.
EPC floor area
Measured floor area (sqm) from lodged EPC certificates: the most reliable UK residential floor area source.
Planning history
Application decisions, planning constraints, listed building grade, conservation area, Article 4 direction.
Flood risk
Environment Agency flood zones plus surface water, river, coastal, and groundwater risk bands.
Council tax band
Council tax band: contextual indicator of relative property value within a local area.
Property characteristics
Property type, construction period, bedrooms, tenure, and building age from EPC and title data.
Worked example
Comparables in one API call
The comparables endpoint returns the most relevant sold prices for a subject property: filtered by property type, radius, and recency, with price-per-sqm normalisation. Reduces manual comparable research from 30–60 minutes to seconds.
# Comparable sales are arranged per customer, not self-serve
GET /comparables/10023456789/
Authorization: Api-Key YOUR_KEY
{
"subject": {
"uprn": "10023456789",
"address": "14 Thornton Road, Bristol BS7 8EJ",
"floor_area_sqm": 88,
"epc_rating": "D"
},
"comparables": [
{
"address": "22 Thornton Road, Bristol BS7 8EJ",
"sale_date": "2024-11-03",
"sale_price": 392000,
"floor_area_sqm": 91,
"price_per_sqm": 4308,
"distance_m": 120
},
{
"address": "8 Redland Park, Bristol BS6 6SA",
"sale_date": "2024-08-21",
"sale_price": 375000,
"floor_area_sqm": 85,
"price_per_sqm": 4412,
"distance_m": 480
}
]
}
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What property data do surveyors need via API?
RICS surveyors typically need: comparable sold prices (adjusted for property type, floor area, and distance), EPC rating and floor area (for price-per-sqm calculations), council tax band, planning history (permitted development, listed building status, conservation area), flood risk zone, and building characteristics (property type, construction period, bedrooms). The Homedata API returns all of these for any UPRN in England and Wales.
How do surveyors use comparable sold prices from an API?
Surveyors use comparable sold price data to support RICS Red Book valuations. The Homedata comparables endpoint returns the last 20 transactions within a configurable radius for matching property types, with floor area, price per sqm, sale date, EPC rating, and distance from subject property: reducing the time spent on manual Land Registry searches from hours to seconds.
Can I access EPC floor area data via the Homedata API?
Yes. EPC certificates include the measured floor area in square metres, which is one of the most reliable sources of floor area data for UK residential properties. The Homedata EPC endpoint returns floor_area_sqm alongside the energy efficiency rating, score, and improvement recommendations for any UPRN in England and Wales with a lodged certificate: we hold over 23 million EPC certificates.
Can I access EPC floor area via the API?
Yes: floor_area_sqm is returned by the EPC endpoint for any UPRN in England and Wales with a lodged certificate (we hold over 23 million EPC certificates).
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