UK property data API for whatever you're building
One API call. 29 million properties. UPRN lookups, EPC ratings, risk scores, price history, transaction data — typically under 300ms. Start free, scale when you're ready.
Homedata is the only UK API exposing the full listing-event chain — Added, Reduced, Sold STC, Withdrawn, Re-listed — matched to a UPRN and a normalised address, queryable by date range across 30 years of history.
UK property data and residential property data covering 90%+ of the market via licensed feed.
100 free calls/month · No credit card required · Docs
Source: OS AddressBase, HM Land Registry Price Paid, MHCLG EPC Register.
Data sourced from
What are you building?
Property data APIs for every use case — from side projects to enterprise platforms
"I need to value thousands of properties quickly"
Property data, comparable sales, and price history to power portfolio analysis at scale.
"I need to understand EPC compliance risk"
EPC ratings, efficiency scores, floor area, construction age band, and certificate date.
"I need historic price data for a specific area"
30 years of transaction history, price trends, and market analysis.
"I need to enrich a list of properties with data"
Pass any UPRN or address and get back type, size, EPC, risk scores, and price history — most endpoints just 1 call.
The data you need
Comprehensive UK property data across eight categories
Property Characteristics
Type, size, age, bedrooms, construction materials, tenure, and council tax band.
29M properties coveredPrices & Transactions
Sale prices, asking prices, price history, transaction dates, and Land Registry records.
30 years of historyEPC & Energy
Current and potential EPC ratings, energy efficiency scores, floor area, construction age, and certificate date.
Full EPC registerArea Intelligence
Deprivation indices, income, employment, education, health, crime, housing, and environment domains.
Postcode-level detailAgent & Market Data
Agent performance, days on market, price achieved vs asking, market share.
All UK agentsEnvironmental Risk
Flood risk, radon, noise, landfill, coal mining, air quality, invasive plants.
Property-level risk scoresSchools
NewNearby schools with Ofsted ratings, phase, age range, pupil numbers, type, and straight-line distance.
~27,000 schools from DfE GIASAddress Lookup
Type an address, get a full property record — bedrooms, EPC, tenure, floor area, and sold price. 36M indexed addresses.
Find: 2 calls · Retrieve: 5 calls
Type an address.
Get back the property.
Most address APIs return a formatted string and a postcode. Ours returns the property. Two API calls — search, then retrieve — and your form is auto-populated with bedrooms, EPC rating, floor area, tenure, and last sold price.
Search — typeahead autocomplete
GET /api/address/find/?q={query}
As the user types, return ranked address suggestions with UPRNs.
Retrieve — full property record
GET /api/address/retrieve/{uprn}/
Pass the UPRN from step 1. Get back the full property record, ready to populate your form.
# Step 1 — search as the user types curl "https://api.homedata.co.uk/api/address/find/?q=14+chapel+lane" # Returns a list of matches, each with a UPRN: # { "results": [{ "uprn": "100023336956", "address": "14 Chapel Lane..." }] } # Step 2 — retrieve the full property record curl "https://api.homedata.co.uk/api/address/retrieve/100023336956/"
Address find costs 2 calls, retrieve costs 5 — reflecting real licensing costs. Property data endpoints cost 1 call each. Try it free with 100 calls/month.
Browse UK property events.
No code required.
Explore is a browser-based tool built on the same data as the API. Search any area — see new listings, price reductions, Sold STC, and withdrawals the moment they happen. Reveal full addresses and event history when you need them.
- Search any town, city, or postcode — results in seconds
- Free to browse: property type, status, and days on market visible without credits
- Reveal event timelines for £0.20 · full addresses for £1
- Every new account gets £10 of free Explore credits on signup
Explore credits are separate from API call quotas — two independent systems.
How it works
From signup to your first API call in under 5 minutes. No sales calls. No procurement.
Create your free account
No credit card. 100 API calls per month to test with real data.
Get your API key
Instant provisioning. Copy your key from the dashboard and start calling.
Make your first call
One call returns 60+ fields per property. Scale to 250k+ calls/month when ready.
Built by a property data company. Not a data reseller.
Most property data APIs cobble together a few public datasets. Homedata combines 29M+ UPRN-matched properties, market activity data, and authoritative public records — all behind a single API.
Live listing intelligence
Property-level market activity, price changes, new listings, and status signals in one place.
UPRN-precise by default
Every record anchored to a Unique Property Reference Number. Address-matched from OS AddressBase, not geocoded approximations.
One API. Not three.
EPC data, risk scores, and price history in a single call. No stitching together Loqate, the EPC register, and a flood risk provider.
Self-serve. No sales calls.
Sign up, get a key, make a call. Competitors like Loqate require a demo, a contract, and a procurement process. We don't.
How we compare
| Homedata | PropertyData | Loqate | |
|---|---|---|---|
| Free tier, no card | — | — | |
| Self-serve signup | Demo required | ||
| EPC + risk + prices in one call | — | — | |
| Land Registry transaction data | LR batch | LR batch | |
| UPRN-anchored records | |||
| Transparent pricing | Call for quote |
Extensive product catalogue no other UK API offers together
Including the only UK API for live market activity. Comparables for surveyors, estate agents and mortgage lenders; planning applications across 417 LPAs; census demographics by postcode — all in one place.
Homedata is the only UK property data API exposing the full listing-event chain — Added, Reduced, Withdrawn, Sold STC, Re-listed — UPRN-matched and queryable over time. Government feeds cover completions; portals don't expose APIs; other commercial property data APIs carry partial slices. On top of that unique market data core: schools, NHS amenities, live planning applications, and census demographics, all UPRN-matched and address-matched.
Market Activity API
Home.co.uk · 30 years of data · Starter+
The full listing-event chain — Added, Reduced, Sold STC, Withdrawn, Re-listed — UPRN-matched and queryable over time. The only UK API that exposes this signal end-to-end.
Comparables API
Listed + sold · proprietary algorithm · Growth+
Comparables built from both listed and sold prices, weighted by a research-backed proprietary algorithm — filtered by property type, bedrooms, distance and date. Built for surveyors, estate agents, mortgage lenders and AVMs.
Planning Applications
417 LPAs · ~20M applications · Growth+
Searchable planning history across 417 local authorities. Decision status, application type, target decision date, documents. No other UK API offers this at scale.
Census Demographics
ONS Census 2021 · All plans
1.8M postcodes mapped to census demographics. Age, employment, tenure, car ownership — for any postcode, LSOA, or MSOA. No competitor ships this either.
27k
UK schools indexed
All UK
NHS amenities
417
Local planning authorities
1.8M
Postcodes with demographics
Built for every property workflow
Whether you're a solo developer or a team at a regulated firm, the same API handles it
Valuers & Surveyors
Comparable sales, price history, and floor area data to underpin AVM models and desktop appraisals. UPRN precision eliminates address ambiguity in valuations.
PropTech & Mortgage Platforms
Address autocomplete that returns full property records — EPC, bedrooms, floor area, tenure — auto-populating forms without manual data entry. One API replaces three separate providers.
Insurers & Risk Analysts
Property-level environmental risk scoring — flood, radon, coal mining, landfill, noise, air quality, invasive plants — for underwriting and pricing models. Standardised scores, not raw GIS data.
Portfolio Managers & Investors
Bulk UPRN lookups to monitor, value, and analyse thousands of properties. EPC compliance gaps, price trends, and market data across an entire portfolio in a single batch run.
Estate Agents & Conveyancers
Instant property details at point of instruction — no more manual lookups. Pull EPC certificates, sold price history, and risk flags automatically from address or UPRN.
Developers & Data Scientists
Consistent JSON, versioned endpoints, an interactive playground, and a free tier. Build your side project or proof-of-concept without a sales call, a contract, or a credit card.
Free property tools
No signup. Instant answers.
EPC Checker
Check any UK property by postcode
Stamp Duty Calculator
2026 SDLT for any price
Mortgage Calculator
Repayment + affordability
Rental Yield Calculator
Gross + net yield
Flood Risk Check
Environment Agency NAFRA2 data
Postcode Profile
Demographics + market activity
UPRN Lookup
Address → unique property ref
Japanese Knotweed Check
Lender-grade risk scan
Information Sheet Checker
31 May 2026 deadline
EPC Upgrade Planner
EPC C 2030 cost estimate
MTD for Landlords
When you must sign up
HVCTS Calculator
Mansion tax 2028 bands
Built out of necessity
— The Homedata Team
Homedata started because UK property data is a mess. To assemble one usable property record we were stitching together half a dozen obscure APIs — one for addresses, another for sold prices, separate ones for EPC, environmental risk, planning, council tax. Each had its own auth, its own rate limits, its own field names, its own update cadence.
Market data — the most useful part — was basically non-existent.
Listing events, days on market, price reductions, withdrawal patterns, sold-vs-asking ratios — the signals that actually move a deal — weren't in any of the public feeds. And the bits that did exist sat behind silently inconsistent UPRN matching: the same property could be a different identifier in two feeds, or missing entirely from one. Records didn't line up. Fields conflicted. Joining a sold price to an EPC to a flood-risk score reliably took weeks of glue code per integration, and the joins broke quietly when an upstream schema shifted.
We built Homedata to fix that for ourselves. One licensed feed covering 90%+ of the UK property market, one canonical UPRN, every record matched and reconciled, every endpoint returning the same shape. The free tier is here because we wanted other developers to skip the work we had to do.
Start building with UK property data
100 free API calls per month. No credit card. Upgrade when you're ready.
Get Your Free API KeyFrequently asked questions
What is a property data API?
A property data API lets developers query UK property information — EPC ratings, sold prices, flood risk, council tax, planning history — as structured JSON via HTTP. Integrate once; get clean data in real time for any of 29 million properties.
What UK property data is publicly available?
Land Registry Price Paid (sold prices), MHCLG EPC register, Environment Agency flood risk maps, VOA council tax bands, OS Open UPRN, and planning.data.gov.uk are all open data. Homedata aggregates them into one normalised API.
How many properties does the Homedata API cover?
29 million UK properties, identified by UPRN. EPC data covers approximately 22 million properties with a lodged certificate. Sold price history covers England and Wales back to 1995.
What is the difference between Homedata and Land Registry?
HMLR is a government body that registers ownership and publishes Price Paid data. Homedata is a commercial API that combines Land Registry, EPC, flood risk, planning, AVM, and listing event data into a single developer-friendly JSON API — saving the integration work of querying five separate government sources.
How do I get started with the Homedata API?
Sign up free (no credit card), get your API key instantly, and make your first call: GET /api/address/find/?query=your+address. Full docs, code examples, and a live playground are included.