From £86,600
Need to find an Extension Builder near you for all your extension buildering work?
D Broomhall provides a local, trusted extension builderi...
From £86,904
Trusted and professional extension builder in B45. Experienced in all extension buildering work and keeping within budget and on quote. Ciara Const...
From £86,696
Experienced extension builder ready to quote for your work. Plowman & Wood is the best extension builder in B45. No obligation free quotes and many...
From £86,728
Trusted and professional extension builder in B45. Experienced in all extension buildering work and keeping within budget and on quote. D & S Decor...
From £87,424
Demolition Solutions Ltd is a trusted extension builder serving customers in B45 and the surrounding area. Contact us to today to get a competitive...
From £86,744
Relax... you have found a reliable extension builder in B45. Platinum Build is a friendly and reliable company based in B45 who consider no job as ...
From £86,856
Need to find an Extension Builder near you for all your extension buildering work?
Glorious Building Company Limited provides a local, trus...
From £86,832
C A Rendering Services Ltd is a trusted extension builder serving customers in B45 and the surrounding area. Contact us to today to get a competiti...
From £86,944
Wilson & Son is an established and experienced local extension builder in B45. Please contact us for a free, no obligation quote and competitive ra...
From £86,584
Relax... you have found a reliable extension builder in B45. FAIRFIELD BUILDERS LTD is a friendly and reliable company based in B45 who consider no...

Building a granny annexe ranges from £86,584 (FAIRFIELD BUILDERS LTD based in B61) to £87,424 (Demolition Solutions Ltd based in B60), 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 B45 by posting a job with HaMuch. We will send it to extension builders in B45 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Bromsgrove | £31 | £237 |
| Granny Annexe near Halesowen | £29 | £227 |
| Granny Annexe near Oldbury | £29 | £227 |
| Granny Annexe near Rowley Regis | £29 | £226 |
| Granny Annexe near Smethwick | £29 | £226 |
| Granny Annexe near Stourbridge | £28 | £223 |
| Granny Annexe near Brierley Hill | £28 | £223 |
| Granny Annexe near Birmingham | £29 | £227 |
| Granny Annexe near Kidderminster | £26 | £209 |
| Granny Annexe near Dudley | £28 | £225 |
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 - £17,331

Two storey extension - £87,747

Build a timber frame extension - £25,831

Build a swimming pool - £80,831

Single storey extension - £51,624

Side return extension - £39,601

Install an RSJ - £2,031

Outbuilding - £9,831

Build a Mansard loft conversion - £51,831

Loft conversion - £32,168

Build a kitchen extension - £41,831

Hip to gable loft conversion - £41,831

Granny annexe - £86,831

Garden office - £9,831

Convert a Garage - £15,831

Garage - £18,331

Build a flat roof extension - £21,831

Build a dormer loft conversion - £41,831

Concrete foundations - £6,081

Convert a bungalow loft - £28,831

Convert a basement - £35,601