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 with a lodged certificate — approximately 22 million properties.

Solutions — Surveyors

Property Data for Surveyors

Q: 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.

Q: 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.

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 searches or portal screen-scraping.

Start free trial See comparables API

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

VOA council tax band A–H — 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.

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.

View pricing →

GET /api/properties/10023456789/comparables/
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
    }
  ]
}

Frequently asked questions

What property data do surveyors need via API?

Comparable sold prices, EPC floor area, planning constraints, council tax band, flood risk, and building characteristics — all returned for any UPRN via the Homedata API.

How do surveyors use comparable sold prices from an API?

To support RICS Red Book valuations — the comparables endpoint returns matched transactions with price per sqm, reducing manual research from hours to seconds.

Can I access EPC floor area via the API?

Yes — floor_area_sqm is returned by the EPC endpoint for any UPRN with a lodged certificate (~22 million properties).