Augustine Sperin
Please refer to for further information. My name is Gus Sperin. I am self-employed electrician, and I have been ...
Prompt .tidy .exspearianced.quality of work
Nav Younis
For all your home renovation requirements, painting and decorating, Wallpapering and Stripping, Skirting boards & Architraves, Exterior wall painti...
Trusted and professional extension builder in B31. Experienced in all extension buildering work and keeping within budget and on quote. Byrne Roofi...
Gary Wilson
Reliable person 25 years experience
if you look on a website rated people and have a look at my ratings
Need to find an Extension Builder near you for all your extension buildering work?
BAKER CONSTRUCTION provides a local, trusted extension b...
Need an Extension Builder in B31? Mint Landscaping has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
Andrew Bouton
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need to find an Extension Builder near you for all your extension buildering work?
Avonvale Garage Doors provides a local, trusted extensio...
Daryl Watson
Welcome to WWM Property Solutions, where we specialize in creating exceptional outdoor and indoor spaces tailored to your unique lifestyle. As a le...

Building a granny annexe ranges from £86,696 (Byrne Roofing & Property Repairs based in CV6) to £87,800 (Sperin Services based in B66), 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 B31 by posting a job with HaMuch. We will send it to extension builders in B31 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Halesowen | £29 | £227 |
| Granny Annexe near Oldbury | £29 | £227 |
| Granny Annexe near Smethwick | £29 | £226 |
| Granny Annexe near Rowley Regis | £29 | £226 |
| Granny Annexe near Birmingham | £29 | £227 |
| Granny Annexe near Bromsgrove | £31 | £237 |
| Granny Annexe near West Bromwich | £29 | £227 |
| Granny Annexe near Brierley Hill | £28 | £222 |
| Granny Annexe near Stourbridge | £28 | £223 |
| Granny Annexe near Solihull | £29 | £231 |
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 - £17,435

Two storey extension - £87,903

Build a timber frame extension - £25,935

Build a swimming pool - £80,935

Single storey extension - £53,704

Side return extension - £40,771

Install an RSJ - £2,135

Outbuilding - £9,935

Build a Mansard loft conversion - £51,935

Loft conversion - £33,143

Build a kitchen extension - £41,935

Hip to gable loft conversion - £41,935

Granny annexe - £86,935

Garden office - £9,935

Convert a Garage - £15,935

Garage - £18,435

Build a flat roof extension - £21,935

Build a dormer loft conversion - £41,935

Concrete foundations - £6,185

Convert a bungalow loft - £28,935

Convert a basement - £36,771