Free tools

Tools to plan your project

Quick, free checks to help you understand your site and options before you speak to an architect. They give general guidance only, not a planning decision.

• 
  01

  Conservation area & site checker

  Any address. Check an address for conservation areas, listed buildings, Article 4, flood zones, Green Belt and more.

  Try it now
• 
  02

  Do I need planning permission?

  Homeowners. Answer a few questions about your extension or loft to see whether it may fall under permitted development.

  Try it now
• 
  03

  Extension questions answered

  Homeowners. Plain answers to the questions homeowners ask most before starting an extension.

  Try it now
• 
  04

  Flat capacity checker

  Developers. Get an indicative range of flats a building could take under London space standards.

  Try it now
• 
  05

  Project planner

  Estimate. Tell us a little about your project and see a ballpark fee in a couple of minutes.

  Try it now