Free feasibility check
Can I extend my house?
A quick first guide to whether your project is permitted development, needs prior approval, or needs a planning application.
Feasibility check
Can I extend without planning permission?
Answer five questions for a first guide, based on the permitted development rules for houses in England.
How permitted development works
Houses in England have “permitted development” rights: some extensions can be built without a planning application, within set limits on depth, height, width and materials. Flats and maisonettes don't have these rights. Conservation areas, National Parks and National Landscapes (formerly AONBs) have tighter limits, and a council can remove rights with an Article 4 direction or a planning condition, which is common on newer estates.
Even when a project is permitted development, a Lawful Development Certificate is worth getting. It proves the work was lawful when you come to sell, and building regulations approval is still needed.
We check your property's planning history and local restrictions as part of every quote. Send us your address and idea.
Ready for a fixed price?
Tell us about your project or the home you're buying. You'll get a clear, fixed quote, usually the same day.