From £86,592
Need to find an Extension Builder near you for all your extension buildering work?
JT Home Improvement provides a local, trusted extension ...
From £87,008
Philcush Builders is a trusted extension builder serving customers in B14 and the surrounding area. Contact us to today to get a competitive quote ...
From £86,880
Relax... you have found a reliable extension builder in B14. Tucker Construction is a friendly and reliable company based in B14 who consider no jo...
From £86,984
Trusted and professional extension builder in B14. Experienced in all extension buildering work and keeping within budget and on quote. 2nd Generat...
From £86,960
SM&S General Property Repairs is a trusted extension builder serving customers in B14 and the surrounding area. Contact us to today to get a compet...
From £86,728
Relax... you have found a reliable extension builder in B14. F.I.I Building Services Ltd is a friendly and reliable company based in B14 who consid...
From £86,944
Need to find an Extension Builder near you for all your extension buildering work?
Avonvale Garage Doors provides a local, trusted extensio...
From £86,944
Wilson & Son is an established and experienced local extension builder in B14. Please contact us for a free, no obligation quote and competitive ra...
From £86,584
S J Byrne Construction Limited is a trusted extension builder serving customers in B14 and the surrounding area. Contact us to today to get a compe...
From £86,968
We are a forward thinking, award winning design and build company based in Solihull in the West Midlands. We strive to deliver the best experience ...

Building a granny annexe ranges from £86,584 (S J Byrne Construction Limited based in B90) to £87,008 (Philcush Builders based in B30), 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 B14 by posting a job with HaMuch. We will send it to extension builders in B14 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Solihull | £29 | £231 |
| Granny Annexe near Birmingham | £29 | £227 |
| Granny Annexe near Smethwick | £29 | £226 |
| Granny Annexe near Oldbury | £29 | £227 |
| Granny Annexe near Halesowen | £29 | £227 |
| Granny Annexe near Knowle | £31 | £241 |
| Granny Annexe near Rowley Regis | £29 | £226 |
| Granny Annexe near West Bromwich | £29 | £227 |
| Granny Annexe near Bromsgrove | £31 | £237 |
| Granny Annexe near Sutton Coldfield | £29 | £228 |
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 - £17,359

Two storey extension - £87,789

Build a timber frame extension - £25,859

Build a swimming pool - £80,859

Single storey extension - £52,184

Side return extension - £39,916

Install an RSJ - £2,059

Outbuilding - £9,859

Build a Mansard loft conversion - £51,859

Loft conversion - £32,430

Build a kitchen extension - £41,859

Hip to gable loft conversion - £41,859

Granny annexe - £86,859

Garden office - £9,859

Convert a Garage - £15,859

Garage - £18,359

Build a flat roof extension - £21,859

Build a dormer loft conversion - £41,859

Concrete foundations - £6,109

Convert a bungalow loft - £28,859

Convert a basement - £35,916