Survey planning constraintsfor any UK location.
Conservation areas, listed buildings, flood zones, green belt and 30+ other planning constraints — all pulled in real time from official government sources. Free.
How it works
Plot a point
Enter a postcode, address, UPRN, grid reference — or click the map to drop a pin.
Survey constraints
Official data sources are queried simultaneously. Every constraint within your chosen radius is returned.
Read the file
Inspect boundaries on the map, expand each finding, and export a PDF report or CSV sheet.
What we check
Over 30 constraint datasets, drawn from five official government sources. A sample:
Official sources only
Every finding is traceable to an authoritative UK government API, licensed under the Open Government Licence.
Planning Data (MHCLG)
Conservation areas, green belt, TPOs, Article 4 and more
Historic England
Listed buildings, scheduled monuments, registered parks
Natural England
SSSIs, ancient woodland, national landscapes
Environment Agency
Flood zones 2 and 3
From the journal
7 Free Open Data Sources to Check Planning Constraints in England
A guide to the best free government open data sources for checking planning constraints on any site in England — and how to search them all at once.
6 Government Websites Every Property Developer Should Bookmark
The essential free government data websites for checking planning constraints, environmental designations, flood risk, and heritage status on development sites in England.
10 Things Open Planning Data Can Tell You Before You Buy a Property
What free government open data can reveal about a property before you make an offer — from flood risk and heritage designations to green belt and ecological constraints.
Survey your first site
Search a postcode or click on the map. A full planning constraints report in seconds, with nothing to sign up for.