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Get free email alerts for new extensions applications in England
Set up alertsFrequently asked questions
When do you need planning permission for a house extension?
Single-storey rear extensions up to 4m (detached) or 3m (semi-detached / terraced) are usually permitted development. Two-storey extensions, anything in a conservation area, or larger projects almost always need a planning application.
What's the difference between planning permission and permitted development?
Permitted development rights let you build certain things without applying for planning permission, subject to specified limits. Anything outside those limits — taller, larger, in a protected area — needs full planning permission.
How long does a householder application take?
The statutory target is 8 weeks from validation. Most simple householder extensions are decided within that window; complex or contested cases (especially with objections) can take longer.
Can I get email alerts for extensions planning applications anywhere in England?
Yes. Click the "Set up alerts" button on this page and you'll get a daily (or weekly) email listing every new extensions application submitted anywhere in England. No need to pick a postcode or draw a map — pick the category once, choose your frequency, and we'll do the rest.
Extensions planning applications elsewhere
UK51,643 applicationsEngland45,560 applications (this page)Scotland3,276 applicationsWales1,695 applicationsNorthern Ireland1,112 applications
Other application types in England
New Homes
8,310 applications
Change of Use
8,049 applications
Commercial & Major Works
4,331 applications
Demolition
8,777 applications
Listed Buildings
2,775 applications
Solar & Renewables
2,050 applications
Telecoms Masts
1,276 applications
Agricultural
3,018 applications
Community & Public Buildings
1,854 applications
Shopfronts
731 applications
Signs & Adverts
3,064 applications
Utility & Infrastructure
4,140 applications
Trees & Landscaping
17,281 applications
Data updated daily across England's active councils.