We send your job to ALL WS12 extension builders
Available extension builders in WS12 reply
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 £86,576
Experienced extension builder ready to quote for your work. LONGDON CONSTRUCTION LTD is the best extension builder in WS12. No obligation free quot...
From £87,096
RJB BUILDERS is an established and experienced local extension builder in WS12. Please contact us for a free, no obligation quote and competitive r...

Building a granny annexe ranges from £86,576 (LONGDON CONSTRUCTION LTD based in WS15) to £87,096 (RJB BUILDERS based in WS124), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in WS12 by posting a job with HaMuch. We will send it to extension builders in WS12 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Cannock | £28 | £227 |
| Granny Annexe near Burntwood | £29 | £229 |
| Granny Annexe near Rugeley | £30 | £230 |
| Granny Annexe near Brownhills | £28 | £225 |
| Granny Annexe near Bloxwich | £28 | £225 |
| Granny Annexe near Lichfield | £29 | £227 |
| Granny Annexe near Walsall | £29 | £229 |
| Granny Annexe near Stafford | £29 | £224 |
| Granny Annexe near Willenhall | £29 | £228 |
| Granny Annexe 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