Replace six data contracts with one.
Valuation, EPC, ownership, comparables, market analysis, and rentals — every UK property data layer your product needs, behind one API, one SDK, one contract. Propalt gives PropTech teams the vendor consolidation behind faster roadmaps and better unit economics.
The Problem We Solve
Every PropTech product team eventually owns the same architecture: a Land Registry reseller, an EPC vendor, a valuation engine, an address lookup, an environmental data provider, a planning data source. Four to seven contracts. Four to seven schemas. Four to seven procurement cycles. A quarter of every engineering roadmap goes to plumbing the integrations together, reconciling coverage gaps, and explaining to finance why per-call costs don't scale linearly.
The Propalt API consolidates valuation, EPC, ownership, rental, comparables, market analysis, environmental indicators, and demographics across 29 million UK properties — behind one OpenAPI 3.1 contract, one SDK, one billing relationship. Replace six vendors with one. Ship the feature your users actually wanted.
What You Can Build
Six common patterns built on Propalt by PropTech product and platform engineering teams today.
Replace 6 data contracts with 1
Swap your Land Registry reseller, EPC vendor, AVM provider, address lookup, market-data feed, and demographics source for a single Propalt contract. Cut procurement, InfoSec, and finance overhead — and get one schema instead of six.
Ship features, not data plumbing
Time-to-first-call under 10 minutes. OpenAPI 3.1 spec, typed SDKs for Node and Python, MCP tools for Claude and ChatGPT. Spend the quarter on the user-facing feature, not the data layer.
Same coverage across every endpoint
Every endpoint resolves against the same 29M UK properties — no silent gaps where valuation returns but EPC doesn't. Your downstream UX never breaks because one vendor lost a postcode.
Predictable per-call pricing
Transparent published pricing per endpoint. Credit-based usage that scales linearly with volume. Model gross margin on day one — not after the third vendor renewal.
Embed Propalt data in your product
Cache responses for the contracted period. Display derived data in your UI. Build proprietary features on top — under straightforward licensing terms, not bespoke negotiation.
MCP-first for Claude, ChatGPT, and agents
Every Propalt endpoint is exposed as an MCP tool. Drop the data layer directly into your in-product Claude / ChatGPT integrations without writing connectors.
Every endpoint your platform needs.
Every endpoint your platform needs — under one contract. Browse the full 36-endpoint directory for everything else.
Example API Response
One call. Seven data layers. The integration your competitors are still building.
{ "property_id": "prop_8f2c44", "uprn": "100023456789", "address": "27 Mowbray Road, Manchester M14 5BS", "tenure": "Freehold", "property_type": "Semi-detached", "bedrooms": 3, "floor_area_sqm": 89, "ownership": { "current_owner_type": "individual", "held_since": "2018-04-12", "ownership_changes_60mo": 1, "linked_companies_house_entities": 0 }, "valuation": { "estimate": 312000, "range": [298000, 326000], "confidence": "high", "comparables_count": 14 }, "rental": { "estimate_pcm": 1450, "yield_gross": 0.0558, "demand_index": "high" }, "epc": { "rating": "C", "score": 71, "expires": "2029-11-08", "fabric": { "walls": "cavity", "roof": "insulated" } }, "environmental": { "coal_authority_area": "false", "mining_area": "false", "area_crime_band": "national_average" // flood / subsidence / escape-of-water scoring is not // yet in the catalog — flagged for product roadmap. }, "history": { "last_sold": { "price": 245000, "date": "2022-08-14" }, "planning_applications_5yr": 1, "ownership_changes_60mo": 1 }, "_meta": { "data_layers": ["ownership", "valuation", "rental", "epc", "environmental", "history"], "vendors_replaced": 4, "billable_credits": 7, "response_time_ms": 138, "cache_ttl_seconds": 86400 } }
Every UK property data layer your platform needs. One API.
Free tier · 500 credits / month · No credit card.