Rooftop geocode, Royal Mail PAF validation, postcode district data, and delivery risk signals — all in one API call. Built for property portals, estate agents, and conveyancers.
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Address Agent API20
Free requests
< 2s
Response time
99.9%
Uptime SLA
Live Property Address Demo — try it now
CAPABILITIES
Latitude and longitude at rooftop level — not postcode centroid. Every enriched address returns precise building-level coordinates ready for mapping, routing, and spatial analysis without additional API calls.
Every address is validated against the Royal Mail Postcode Address File — the definitive UK address dataset. Returns a canonical address, confidence level (HIGH/MEDIUM/LOW), and UDPRN for exact record matching.
Identifies property type from Royal Mail PAF building names. Distinguish residential addresses from commercial premises — useful for routing, pricing, and compliance workflows in property and insurance.
Returns district, ward, county, LSOA, and ONS postcode metadata with every enriched address. Replaces a separate postcode lookup call — one request returns address and district context together.
Returns a delivery risk score — LOW, MEDIUM, or HIGH — and fraud signal flags on every request. Aggregated from address validity, IP geolocation, and contact signal checks where provided.
Accepts partial addresses, plain English descriptions, and postcodes. Handles typos and resolves ambiguous input — no rigid format required. Built for real-world property data that arrives inconsistently formatted.
USE CASES
From property portals to conveyancers — the same validated, geocoded address data in every workflow.
Property portals handle millions of listing addresses that arrive in inconsistent formats from agents, landlords, and developers. The PropTech API validates, standardises, and geocodes every address at ingestion.
Validate every listing address against Royal Mail PAF before it goes live
Geocode at rooftop level for accurate map pin placement
Return district and ward data to power postcode-based search filters
Distinguish residential from commercial for listing category classification
Traditional postcode APIs return address arrays you must parse yourself. The PropTech API returns a validated, geocoded, classified address in one call — no downstream parsing required.
WHY PROPTECH API
| Feature | PropTech API | Traditional Postcode API |
|---|---|---|
| Royal Mail PAF address validation | ||
| Rooftop geocode (building level) | ||
| Postcode district / ward / county | ||
| UDPRN for Land Registry matching | ||
| Residential vs commercial detection | ||
| Delivery risk score | ||
| Natural language address input | ||
| Single API call (no chaining) | ||
| Response time | < 2s | < 1s |
HOW TO START
Sign up with an email and password. No credit card. Your PropTech API key is provisioned instantly with 20 free address enrichment requests to test the integration.
Free Sign UpSend any UK address or postcode to the /enrich endpoint. Get back a canonical address, rooftop geocode, confidence score, district data, and delivery risk — in under 2 seconds.
Purchase address enrichment credits. No monthly subscription. Scale from occasional checks to millions of property records with the same endpoint.
View PricingINTEGRATION
One POST request. Works in any language. No SDK required.
curl -X POST \
"https://agent.apitier.com/v1/enrich?x-api-key=YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"address": "1 Canada Square, Canary Wharf",
"postcode": "E14 5AB"
}'
# Response
{
"valid": true,
"canonical_address": "1 Canada Square, London, E14 5AB",
"postcode": "E14 5AB",
"district": "Tower Hamlets",
"ward": "Canary Wharf",
"county": "Greater London",
"confidence": "high",
"address_type": "commercial",
"geocode": { "latitude": 51.5045, "longitude": -0.0183 },
"udprn": "12345678",
"delivery_risk": "low",
"fraud_signals": [],
"message": "Address confirmed. 1 Canada Square is a valid delivery point at E14 5AB."
}FAQ
What is rooftop geocoding and why does it matter for property?
Rooftop geocoding returns latitude and longitude coordinates at the building level — pinpointing the specific property, not just the centre of the postcode. Postcode centroid geocoding places the pin at the centre of a postcode district, which can be hundreds of metres from the actual property. For property portals, map integration, flood risk assessment, and planning distance calculations, rooftop accuracy matters significantly.
What data source does the PropTech API use?
Address validation uses the Royal Mail Postcode Address File (PAF) — the definitive UK address dataset maintained by Royal Mail. Geographic metadata (district, ward, county, LSOA, geocode) comes from ONS National Statistics Postcode Lookup (NSPL). Both datasets are updated regularly. The UDPRN is the Royal Mail unique delivery point reference number.
What is UDPRN and how is it used in property workflows?
UDPRN (Unique Delivery Point Reference Number) is the Royal Mail's unique identifier for every delivery point in the UK. It is used to cross-reference Royal Mail address data with Land Registry title records, avoiding ambiguity when multiple properties share similar addresses. Conveyancers and lenders use UDPRN to ensure the property address on the contract exactly matches the Land Registry title.
How accurate is the confidence score?
HIGH confidence means the exact building number or name was found in PAF for the given postcode. MEDIUM means the postcode is valid but the building identifier is ambiguous or not found. LOW means the address could not be confirmed against Royal Mail records. The API never fabricates addresses — if it cannot confirm, it returns LOW confidence with an explanation in the issues array.
Can I send addresses without a postcode?
Yes. You can send a plain English address without a postcode and the API will attempt to resolve it. Addresses without postcodes may return MEDIUM confidence. For the highest confidence results — particularly for conveyancing and mortgage applications — providing the full address and postcode together is recommended.
Does it cover Scotland, Wales, and Northern Ireland?
Yes. The PropTech API covers all UK postcodes including Scottish (AB, DD, EH, FK, G, etc.), Welsh (CF, CH, LD, etc.), and Northern Irish (BT) postcodes. The same Royal Mail PAF data source covers the full UK address file.
Can I use this for bulk property datasets?
Yes. The API is designed for both real-time lookups and bulk enrichment. Send one address at a time for real-time validation during property ingestion, or process batches sequentially for dataset cleansing. There is no batch endpoint — each call is independent, allowing you to parallelise as needed. Contact us for high-volume enterprise arrangements.
What pricing plans are available?
All new accounts get 20 free address enrichment requests with no card required. After that, Pay-As-You-Go credits start from £9 for 50 requests. No monthly subscription and no minimum commitment. Credits work across all APITier APIs — address, KYC, and fraud detection share the same credit balance.