Data Sources

Provider status, confidence and API usage.

ProviderPurposeStatusNotes
OS Features (WFS)Building footprints, roads and UPRNs — geometry provider
Connected
Live — checked against the OS Data Hub just now.
OS Vector TileBase mapping
Connected
Live — checked against the OS Data Hub just now.
OS NamesPlace, road and postcode search
Connected
Live — checked against the OS Data Hub just now.
OS Linked IdentifiersUPRN to building and street identifiers
Connected
Live — checked against the OS Data Hub just now.
OS PlacesAddress-level search and UPRN lookup
Not connected
Premium OS product — not available on this Data Hub plan.
OS NGD FeaturesPreferred detailed geometry (MasterMap)
Not connected
Requires an OS Premium plan; OS Features open data is used instead.
Planning Data (planning.data.gov.uk)Planning and heritage constraints
Connected
Live entity queries; coverage varies by local authority.
Environment AgencyFlood zones, surface water, main rivers
Not connected
Placeholder layer — planning flood-risk zones used for initial screening.
HM Land Registry INSPIRE polygonsRegistered land extent per title (Leeds City Council)
Connected
Open data, downloaded 6 Sep 2026. An index of registered land, not a surveyed legal boundary.
HM Land Registry title documentsPrice paid, title register and plan
Demo data
Paid title documents are never ordered automatically.
AI providerMultimodal site review
Connected
Provider abstracted behind aiSiteReviewService.

API usage

No API calls logged yet.

WhenProviderEndpointResult

Source confidence

  • Building footprint — Ordnance Survey mapping (not a legal ownership boundary).
  • Estimated site boundary — automated inference, typically 60–80% confidence.
  • Legal title boundary — only available once HM Land Registry data is purchased.
  • Planning constraints — planning.data.gov.uk, recorded with retrieval date.