UK Property Data API for Estate Agents.
Identify landlords likely to sell, generate valuation leads automatically, and build targeted outreach campaigns — all powered by real-time property data.
The Problem We Solve
Estate agents need to identify opportunities before competitors do. That means knowing which landlords are likely to sell, which properties have changed hands recently, and which areas are showing early signs of market movement. Manual research doesn't scale. CRM data goes stale. And generic marketing platforms don't understand property.
The Propalt API gives estate agents programmatic access to landlord ownership data, propensity-to-sell signals, EPC intelligence, and market trends — so you can build tools that surface the right prospect at the right time.
What You Can Build
Six common patterns built on Propalt by estate agency engineering teams today.
Landlord and seller prospecting
Identify landlords with portfolios of 3+ properties in a specific postcode who haven't transacted in 5+ years — and surface owner-occupiers showing selling signals via audience-selling-property. Two prospect pipelines, one API.
Automated valuation lead capture
Trigger lead forms for homeowners when market signals suggest they may be considering selling.
Area intelligence dashboards
Show vendors and landlords hyper-local market data at the time of valuation — prices, demand, comparable transactions, and school-catchment context via get-nearby-schools for the address.
Automatic contact enrichment
Append EPC ratings, tenure type, last sold price, and portfolio size to existing contact records in your CRM.
20:20 campaign targeting
Build audiences of likely movers using propensity scores and transaction history — exportable for direct mail.
Branch performance benchmarking
Compare any branch's catchment to the wider market on rents, prices, and stock turnover, weekly.
Key Endpoints for Estate Agents
These 10 endpoints handle > 90% of estate-agent workloads. Browse the full 36-endpoint directory for everything else.
Example API Response
A property valuation lead — combining propensity signals, EPC, and recent market context in a single response.
{ "property_id": "prop_4d2f8e", "uprn": "200002145903", "address": "42 Oxford Gardens, London W10 5UJ", "tenure": "Freehold", "property_type": "Terraced", "floor_area_sqm": 132, "bedrooms": 4, "valuation": { "estimate": 1850000, "range": [1720000, 1980000], "confidence": "high", "last_sold": { "price": 1320000, "date": "2017-08-04" } }, "signals": { "propensity_to_sell": 0.71, "market_velocity": "warm", "epc_rating": "D", "epc_expires": "2027-04-12" }, "local_market": { "sstc_days_avg": 42, "asking_to_sold": 0.97, "trend_12mo": "+4.2%" } }
Surface the right prospect at the right time.
Free tier · 500 credits / month · No credit card.