For homeowners
Estimate your extension cost before you commit to full drawings.
Add the size, location, finish and known project details. Proper Job gives you a free early cost range with the included work, assumptions, exclusions and decisions still to make.
Why a square-metre price is not enough
Area is only one part of an extension price. Structure, glazing, kitchens, bathrooms, drainage, access, ground conditions, finish level and work to the existing house can all change the cost.
What your Price shows
- An early cost range.
- Work included in the calculation.
- Assumptions and exclusions.
- Details that still need confirming.
When your drawings are ready
A price helps you test the budget early. A Drawing analysis uses the drawing information to produce itemised work packages for the project.
Start with the job you are planning
Building cost calculator
Drawing analysis from drawings · £29.99 inc VAT
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