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Select your affordable WS12 extension builder
Infinity Property Improvements Limited are here to help customers who need an Extension Builder in WS12. We offer a competitive rate to complete al...
Empire Builders is an established and experienced local extension builder in WS12. Please contact us for a free, no obligation quote and competitiv...
From £21,576
Experienced extension builder ready to quote for your work. LONGDON CONSTRUCTION LTD is the best extension builder in WS12. No obligation free quot...
From £22,096
RJB BUILDERS is an established and experienced local extension builder in WS12. Please contact us for a free, no obligation quote and competitive r...

A flat roof extension ranges from the cheapest of £21,576 (LONGDON CONSTRUCTION LTD based in WS15) to the dearest of £22,096 (RJB BUILDERS based in WS124), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in WS12 by posting a job with HaMuch. We'll send it to extension builders in WS12.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Cannock | £28 | £227 |
| Build A Flat Roof Extension near Burntwood | £29 | £229 |
| Build A Flat Roof Extension near Rugeley | £30 | £230 |
| Build A Flat Roof Extension near Brownhills | £28 | £225 |
| Build A Flat Roof Extension near Bloxwich | £28 | £225 |
| Build A Flat Roof Extension near Lichfield | £29 | £227 |
| Build A Flat Roof Extension near Walsall | £29 | £229 |
| Build A Flat Roof Extension near Stafford | £29 | £224 |
| Build A Flat Roof Extension near Willenhall | £29 | £228 |
| Build A Flat Roof Extension near Darlaston | £29 | £229 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,382

Two storey extension - £87,823

Build a timber frame extension - £25,882

Build a swimming pool - £80,882

Single storey extension - £52,640

Side return extension - £40,173

Install an RSJ - £2,082

Outbuilding - £9,882

Build a Mansard loft conversion - £51,882

Loft conversion - £32,644

Build a kitchen extension - £41,882

Hip to gable loft conversion - £41,882

Granny annexe - £86,882

Garden office - £9,882

Convert a Garage - £15,882

Garage - £18,382

Build a flat roof extension - £21,882

Build a dormer loft conversion - £41,882

Concrete foundations - £6,132

Convert a bungalow loft - £28,882

Convert a basement - £36,173