Observed arrival · 2026-10-20
HomePlanningCheck: Can I extend my house?
An England-only address checker that tests a home's plot against planning designations and outlines permitted-development rules for common projects.
- For
- England homeowners weighing home alterations
- Worth noticing
- It says it never locates a house from a postcode alone; users choose an address or tap their home on a map.
Field notes
The workflow uses a registered plot outline, with a map-tap fallback if the address is not found; the site says it will not locate a house from a postcode alone. It describes testing 13 planning-data datasets and grading the evidence, while warning that some council records and conditions are not published nationally. In a reported sample of 300 English postcodes, councils published their own Article 4 data for 39% and Tree Preservation Order data for 29%.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue