See every planning constraint at any England, Wales or Scotland address— in seconds.
Conservation areas, listed buildings, flood zones, green belt, Article 4 and 140+ more — free, unlimited, no signup. Need it on paper? The Full Survey Report is £9.99.
Postcode, address, grid reference or UPRN. England, Wales and Scotland, free, no signup.
Official open data · planning.data.gov.uk · Historic England · Natural England · Environment Agency · HM Land Registry · Cadw · Historic Environment Scotland · NatureScot
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 recorded in the datasets we check is returned.
Read the file
Inspect boundaries on the map and expand each finding free — then order the Full Survey Report for the PDF, CSV export and plain-English guidance.
What we check
Over 140 constraint datasets, drawn from around fifteen official government sources across England, Wales and Scotland. 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 (England)
Historic England
Listed buildings, scheduled monuments, registered parks (England)
Natural England
SSSIs, ancient woodland, national landscapes (England)
Environment Agency
Flood zones 2 and 3 (England)
Cadw & Natural Resources Wales
Listed buildings, conservation areas, TAN15 flood mapping (Wales)
Historic Environment Scotland & NatureScot
Listed buildings, scheduled monuments, SSSIs and more (Scotland)
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.