Legal · Attribution

Licences & Data Attribution

Everything the Planning Constraints Checker renders is derived from public-sector open data, published by UK government bodies. This page lists every upstream source, the licence it’s distributed under, and the exact attribution we provide back.

Summary

All underlying data is made available under the Open Government Licence v3.0, which permits use (including commercial use) provided the source is attributed. Results shown by this tool are advisory — for any regulated decision you must verify with the relevant local planning authority or data publisher.

Ministry of Housing, Communities and Local Government

Source

Conservation areas, listed buildings, flood zones, Article 4 directions, green belt, TPOs, local plans, title boundaries, and many other planning datasets, served via planning.data.gov.uk.

Licence: Open Government Licence v3.0

HM Land Registry

Source

INSPIRE Index Polygons — registered freehold title boundaries for England and Wales. We host our own copy, refreshed monthly from HMLR's official monthly drop, and serve it through our own API.

Licence: Open Government Licence v3.0
Attribution: “Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry”
Note: Title boundary data is indicative only and does not constitute a legal property boundary. Leasehold parcels and unregistered land are not included. Verify with HM Land Registry for any legally-binding decision.

Ordnance Survey

Source

Derived data embedded in planning.data.gov.uk datasets, and basemap tiles used in the mapping interface.

Licence: Open Government Licence v3.0 (for derived data via planning.data.gov.uk)
Attribution: “Crown copyright and database rights 2026 Ordnance Survey 100026316”

Historic England

Source

Listed Buildings from the National Heritage List for England, via their ArcGIS feature service.

Licence: Open Government Licence v3.0

Natural England

Source

Ancient Woodland inventory and Sites of Special Scientific Interest (SSSI) polygons, via their ArcGIS feature service.

Licence: Open Government Licence v3.0

Environment Agency

Source

Flood Map for Planning — Flood Zone 2 and Flood Zone 3 polygons, via their ArcGIS feature service.

Licence: Open Government Licence v3.0

Mining Remediation Authority (formerly Coal Authority)

Source

Coal Mining Development High Risk Area polygons, via their ArcGIS feature service.

Licence: Open Government Licence v3.0

Department for Education

Source

School locations, phase, type, Ofsted rating and capacity from Get Information about Schools (GIAS), used to list the nearest primary and secondary schools by straight-line distance. We host our own copy, refreshed from the GIAS establishment download.

Licence: Open Government Licence v3.0
Note: Straight-line distance only — not catchment or admissions data. School admission depends on each school's and the local authority's own criteria, which change each year.

Required Crown copyright notices

Datasets redistributed by HM Land Registry and Ordnance Survey require that the following attributions appear wherever their data is displayed. They are reproduced here in full:

“Crown copyright and database rights 2026and is reproduced with the permission of HM Land Registry.”
“Crown copyright and database rights 2026Ordnance Survey 100026316.”