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Relax... you have found a reliable extension builder in Selly Oak. MD Services is a friendly and reliable company based in Selly Oak who consider n...
Experienced extension builder ready to quote for your work. K Barrett Roofing LTD is the best extension builder in Selly Oak. No obligation free qu...
Need to find an Extension Builder near you for all your extension buildering work?
Atwal Building Services Ltd provides a local, trusted ex...
Brickfast Builders is an established extension buildering business in Selly Oak. We come highly recommended and provide competitive quotes for your...
Lloyd Clarke
Need to find an Extension Builder near you for all your extension buildering work?
LC BUILDING SERVICES provides a local, trusted extension...
Oakham Brickwork is an established extension buildering business in Selly Oak. We come highly recommended and provide competitive quotes for your w...
Trusted and professional extension builder in Selly Oak. Experienced in all extension buildering work and keeping within budget and on quote. A&D B...
Trusted and professional extension builder in Selly Oak. Experienced in all extension buildering work and keeping within budget and on quote. ARGEN...
Trusted and professional extension builder in Selly Oak. Experienced in all extension buildering work and keeping within budget and on quote. Amos ...
Have Faith Plasterers is an established and experienced local extension builder in Selly Oak. Please contact us for a free, no obligation quote and...

Building a granny annexe ranges from £86,568 (ARGENT BUILDERS LTD based in B64) to £87,048 (A&D Builders based in B64), 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 Selly Oak by posting a job with HaMuch. We will send it to extension builders in Selly Oak who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Oldbury | £29 | £229 |
| Granny Annexe near Halesowen | £28 | £225 |
| Granny Annexe near Smethwick | £29 | £230 |
| Granny Annexe near Birmingham | £28 | £228 |
| Granny Annexe near Rowley Regis | £29 | £228 |
| Granny Annexe near West Bromwich | £29 | £228 |
| Granny Annexe near Sandwell | £29 | £231 |
| Granny Annexe near Solihull | £29 | £231 |
| Granny Annexe near Dudley | £29 | £227 |
| Granny Annexe near Brierley Hill | £28 | £222 |
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 - £17,368

Two storey extension - £87,802

Build a timber frame extension - £25,868

Build a swimming pool - £80,868

Single storey extension - £52,360

Side return extension - £40,015

Install an RSJ - £2,068

Outbuilding - £9,868

Build a Mansard loft conversion - £51,868

Loft conversion - £32,513

Build a kitchen extension - £41,868

Hip to gable loft conversion - £41,868

Granny annexe - £86,868

Garden office - £9,868

Convert a Garage - £15,868

Garage - £18,368

Build a flat roof extension - £21,868

Build a dormer loft conversion - £41,868

Concrete foundations - £6,118

Convert a bungalow loft - £28,868

Convert a basement - £36,015