Planning tool
Conservation area & Article 4 checker
Two designations quietly change what you can build without planning permission: conservation areas and Article 4 directions. Enter a postcode and we’ll check both against the national planning datasets.
Results
01 · Conservation area
02 · Article 4 direction
Other designations on this point
What this means for your project: inside these designations, some or all
permitted development rights are restricted, work like lofts, extensions, cladding or even
replacement windows may need planning permission that wouldn’t elsewhere. Read
our planning guides before designing anything.
Checked against the national conservation-area and article-4-direction-area datasets on planning.data.gov.uk (Crown copyright, OGL) via postcodes.io. Coverage is good but not yet complete for every council, and boundaries are checked at the postcode’s centre point, always confirm with your local planning authority before committing to a design.