Project guide
Extending your home
Most extensions need drawings, structural calculations and a Building Regulations application. Extensions with a lot of glazing may also need an energy calculation.
What it usually involves
Your project, stage by stage.
Untick anything you already have in hand. The rest goes into one quote request, and we confirm what actually applies once we have seen the details.
1Before work starts
2During the build
Building control inspects the work. Any construction-stage support, design changes or additional visits will be confirmed in your agreed scope.
3At the end
Guidance refers to England. Requirements vary by project and building control route, and your quotation confirms what applies. Approval and completion decisions remain with your building control body.
Other projects
Guides for other kinds of work
Request a quote
Tell us about your project.
A short description and early drawings are enough to start. We confirm the scope, deliverables and price in writing.