Transparency · How it works
Data sources and methodology
Every lender-ready evidence pack is built from structured, citable data. This page documents what we use and where it comes from — planning data sources UK lenders and developers can verify.
PlanSureAI does not scrape opaque third-party portals or rely on unaudited broker spreadsheets. Each named dataset below feeds the evidence pack where coverage exists. Coverage varies by region — strongest across South West England, expanding nationally. Update cadence and coverage depth vary by dataset; where a source is thin or unavailable for a site, packs state the gap rather than inventing a figure.
Planning appeals (PINS)
| Records | 188,933 appeal decisions (2015–2025) |
|---|---|
| Source | MHCLG PINS dataset |
| Coverage | England |
Land Registry transactions
| Records | 2.8M residential Price Paid Data transactions |
|---|---|
| Source | HM Land Registry Price Paid Data |
| Coverage | England and Wales |
CIL charging schedules
| Source | Individual LPA published charging schedules |
|---|---|
| Last updated | As published by each LPA |
| Coverage | South West England (strongest); England (partial) |
Planning applications
| Records | Live and historical application metadata |
|---|---|
| Source | planning.data.gov.uk |
| Last updated | As ingested from source feed |
| Coverage | Cornwall Council and selected LPAs |
EPC certificates
| Records | Domestic energy performance certificate data |
|---|---|
| Source | api.get-energy-performance-data.communities.gov.uk |
| Last updated | As published by the register |
Viability benchmarks
| Records | Regional build cost benchmarks |
|---|---|
| Coverage | England (regional benchmarks; strongest in South West) |
How packs are assembled
Postcode and planning status are the inputs. PlanSureAI pulls from the datasets above where they cover the site, structures available evidence for the pack, runs a readiness check, and stamps a SHA-256 snapshot on export. Figures that appear in a pack are intended to trace to a named source; where a source is missing or not yet wired, the pack should surface the gap rather than imply full annex coverage.
PlanSureAI is an observational research tool. Data is used to structure evidence — not to give planning, legal, or financial advice.
See also Disclaimer and Privacy.