Find the property before it's on the market.
Ownership, planning context, GDV comparables, and Section 106 benchmarks for any UK property or set of titles — in one call. Propalt gives land, acquisitions, and GIS teams the data layer behind faster sourcing and sharper appraisals.
The Problem We Solve
Land sourcing in the UK is still mostly relationships, rumour, and Rightmove. Planning data is scattered across 380+ Local Planning Authorities, half with broken portals. Ownership threads itself through nominee companies and family estates. GDV gets back-calculated from a handful of new-build comps pulled by hand. By the time a site is acquirable, three developers already know.
The Propalt API gives developers and land platforms property-level ownership and corporate-entity intelligence, regional and quarterly market analysis, new-build GDV comparables and sales velocity, environmental indicators (coal area, mining area, area-level crime), and ownership-change signals on potential acquisitions — in one call, refreshed daily. See the property before it lists.
What You Can Build
Six common patterns built on Propalt by land, acquisitions, and GIS engineering teams today.
Off-market site discovery
Identify acquirable sites by ownership pattern, lapsed consent, recent corporate ownership transfer, or single-elderly-owner signals. Surface sites months before they list.
Regional and quarterly market context
Pull regional house-price trends, quarterly market analysis, and demographic context to underwrite area-level risk and demand. Replaces the postcode-average proxy with structured market evidence.
New-build GDV comparables
Return comparable new-build sales filtered by completion phase, spec, and unit type — with achieved price-per-sqft, sales velocity, and discount patterns. Build the appraisal on evidence.
Comparable-led contribution benchmarks
Benchmark Section 106 affordable-housing percentages and typical condition packages using comparable new-build sales and regional market analysis. Quantify the contribution context before submitting the bid.
Site assembly and ransom strip mapping
Map every adjacent title, identify ransom strips, and surface owners — including corporate entities, nominees, and absent individual landowners. Build the negotiation list in minutes.
Live land-pipeline monitoring
Re-screen every property in a development pipeline as new data lands — ownership changes, regional market movements, environmental updates. Spot the deal at risk before the meeting on Monday.
Key Endpoints for Property Developers
These 10 endpoints cover > 90% of land and acquisitions workloads. Browse the full 36-endpoint directory for everything else.
Example API Response
A multi-title appraisal pull — subject property, adjacent owners, GDV comparables, regional market context, and environmental indicators in a single batch response.
// Batch response: one record per requested title [ { "title_no": "MX123456", "property_id": "prop_4a7c12", "current_use": "agricultural", "area_hectares": 0.84, "ownership": { "current_owner_type": "individual_estate", "current_owner_held_since": "1987-04-22", "ownership_changes_60mo": 1 }, "environmental": { "coal_authority_area": "false", "mining_area": "false", "area_crime_band": "below_national_avg" } }, { "title_no": "MX123457", "property_id": "prop_4a7c13", "ownership": { "current_owner_type": "corporate", "name": "Hill Farm Holdings Ltd" } }, { "title_no": "MX123458", "property_id": "prop_4a7c14", "ownership": { "current_owner_type": "individual" } } ] // Area context — fetched alongside via get-regional-analysis, // get-comparable-properties, get-quarterly-market-analysis: { "region": "Wakefield", "gdv_comparables": { "new_build_sales_2km_24mo": 142, "achieved_psf_p50": 285, "sales_velocity_units_per_outlet_pcm": 0.74 }, "market_signals": { "hpi_yoy": "+3.8%", "avg_days_to_sstc": 42 } } // Not in catalog yet — flagged for product roadmap: // lpa_approval_rate / lpa_avg_determination_weeks / // consented_density_dph / s106_typical_pct / cil_rate_per_sqm / // flood_zone / ground_stability / contaminated_land_indicators
Every UK site. Appraised in one call. One API.
Free tier · 500 credits / month · No credit card.