Tell us about your extension
Start with your postcode, address, approximate size and what you already have. You can say “not sure”.
Compare Your Build
Local professionals. A clearer choice.
Compare architectural designers, builders and structural engineers for your home project.
Your area. Your shortlist.
Find your local shortlist.
Enter any UK postcode to find researched firms and compare your options.
No contact details needed. Build budget means the total project value, not the designer’s fee.
Real business sourcesClear verification statusNo paid positions
Available in this beta: save your extension project, request each service separately and compare quotations you already have. The team reviews requests first. Postcode search lists researched firms across the UK, separately labelled from CYB-approved firms with confirmed coverage. Confirm each firm’s service area and availability. Verified customer reviews are not available yet.
Find the right service
What would help your project move forward?
Explore one stage or work out how the services fit together.
Architectural designers
Shape the idea. Prepare the drawings.
Explore this serviceBuilders
Understand the work behind the price.
Explore this serviceStructural engineers
Define the engineering your project needs.
Explore this serviceTechnical & Building Regulations drawings
Develop the detail for the next stage.
Explore this serviceFrom idea to build
Still working out the project?
Get an early cost estimate and understand your next steps before asking for quotes.
A clearer starting point
One project. A brief you can build on.
Understand the next step
See your council, an early cost breakdown and the parts of your project that need checking.
Ask for the help you need
Save your project. Request designers, builders or engineers separately, or bring your existing quotes. The team assesses requests before any outside sharing.
Start with what you know
An idea, a sketch or a set of plans.
Your postcode, house type and rough dimensions help tailor the result. See what you have, what may be needed and what still needs checking.