Government EPC endpoint closes 30 May 2026

EPC API — Energy Performance Certificate Data for 29M UK Properties

Name: UK EPC (Energy Performance Certificate) Dataset
Creator: Homedata
License: https://homedata.co.uk/terms

The UK government's free EPC open data endpoint closes on 30 May 2026. Homedata provides a stable, developer-friendly EPC API covering 29 million UK properties — same data, clean JSON, 250ms responses. Migrate before the shutdown.

Get free API key Migration guide

What's in the API

EPC rating (A–G)

Current and potential energy efficiency rating with numeric score (1–100). Environmental impact rating also returned.

Floor area

Total floor area in square metres from the EPC record. Essential for price-per-sqm calculations and AVM models.

Construction age band

Age band from the EPC (e.g. "1930–1949", "2020–2029"). Filter property portfolios by era.

Certificate date

Lodgement date — flag certificates expiring within 10 years before they become a compliance gap.

Improvement recommendations

Recommended measures, estimated costs, and potential savings from the EPC assessor's report.

Sample response

{
  "uprn": "100023336956",
  "address": "14 Victoria Road, Bristol BS8 4ES",
  "current_rating": "D",
  "current_score": 63,
  "potential_rating": "B",
  "potential_score": 84,
  "environmental_impact": "D",
  "total_floor_area": 124.0,
  "construction_age_band": "1930-1949",
  "lodgement_date": "2022-07-14",
  "certificate_reference": "0123-4567-8901-2345-6789"
}

Government endpoint closes 30 May 2026

If you currently call epc.opendatacommunities.org, migrate to Homedata before shutdown. Same data, cleaner API, free tier.

Common EPC API use cases

Portfolio EPC compliance

The Government has proposed that landlords achieve EPC band C by 2030 — legislation has not yet been enacted. Bulk-screen your portfolio via UPRN list now to identify which properties will need improvement.

Mortgage lending

Green mortgage eligibility checks, retrofit lending, and portfolio risk scoring all require fast EPC lookups per property.

PropTech AVM models

Floor area from EPC is the most reliable proxy for property size — essential for automated valuation models and price-per-sqm calculations.

Pricing

EPC data is free — no API key required for basic lookups. Higher-volume access starts at £49/month.

Free

£0

100 calls/mo

Starter

£49

2,000 calls/mo

Growth

£149

10,000 calls/mo

Pro

£349

50,000 calls/mo

See full pricing →

FAQ

Why is the government EPC endpoint closing?

The government's EPC open data portal (epc.opendatacommunities.org) is being retired on 30 May 2026. Homedata's EPC API uses the same underlying data with a stable, supported endpoint.

How many properties have EPC data?

Approximately 24 million UK properties have an EPC certificate lodged. Properties built before mandatory EPC requirements (typically pre-2008 with no recent sale or rental) may not have a record.

Can I look up EPC by address or postcode?

Yes — pass a UPRN, full address, or postcode. Address and postcode lookups return all matching properties with their EPC records.

Is EPC data covered by the free tier?

Yes. Basic EPC lookups (current rating, score, floor area) are available on the free tier with no credit card required.