Hometrack is an AVM for lenders. UKDataAPI is a property intelligence API for developers. Different products, overlapping data sources.
Hometrack (now part of Zoopla) is the UK's leading automated valuation model (AVM), used by mortgage lenders, banks, and institutional investors to estimate property values without physical surveys. Hometrack's strength is its proprietary valuation model — trained on millions of transactions, it provides confidence-rated property valuations that lenders accept for mortgage decisions. UKDataAPI does not provide property valuations. Instead, it delivers the underlying data that informs valuations — Land Registry transactions, EPC energy ratings, planning constraints, flood risk, and ground stability — enriched with a proprietary Environmental Risk Score. For developers building property platforms, investment tools, or portfolio analytics, UKDataAPI provides the data layer that Hometrack's valuations are built upon.
| Feature | UKDataAPI | Hometrack |
|---|---|---|
| Automated property valuation (AVM) | Not included | ✓Confidence-rated AVMs accepted by lenders |
| Land Registry price data | Area-level transactions and trends | Transaction data feeding valuation models |
| EPC energy ratings | Average rating, distribution, CO2 emissions | Available as enrichment |
| Environmental Risk Score | ✓0-100 composite with factor breakdown | No composite scoring |
| Flood risk | ✓EA real-time data with active warnings | Basic risk indicators |
| Ground stability and geology | ✓BGS data — subsidence, shrink-swell, radon | Not included |
| Planning constraints | ✓Conservation areas, listed buildings, Article 4 | Limited planning data |
| Lender acceptance | Not a regulated valuation product | ✓Accepted by major UK mortgage lenders |
| Output format | Structured JSON API | Enterprise API + portal |
| Batch processing | Up to 500 req/min | Enterprise batch processing |
| Crime data for location | ✓Included in property endpoint | Not included |
| AI agent access (MCP/x402) | ✓Native support | Not available |
UKDataAPI
From £0.01/call (summary) to £0.06/call (full). Pay-as-you-go. No contract. Free tier: 200 credits/month.
Hometrack
Enterprise pricing only. Typically £5,000-50,000+/year depending on volume and integration. No self-serve access.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://www.ukdatapi.com/api/v1/property/EC2R%208AH?depth=full" # Returns: price history, EPC profile, planning constraints, # Environmental Risk Score (0-100), flood risk, geology, crime # Cost: 30 credits (£0.06)
200 free credits. No contract. No credit card.
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