From £86,952
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,000
Honest, reliable, experienced building/civil engineering contractor established in 2001.
From £86,912
Need to find an Extension Builder near you for all your extension buildering work?
M F Westwick Construction Ltd provides a local, trusted ...
From £86,760
RMS Building Services is a trusted extension builder serving customers in Osmaston and the surrounding area. Contact us to today to get a competiti...
From £86,936
Trusted and professional extension builder in Osmaston. Experienced in all extension buildering work and keeping within budget and on quote. Merebr...
From £87,928
Trusted and professional extension builder in Osmaston. Experienced in all extension buildering work and keeping within budget and on quote. COMPLE...
From £86,752
Relax... you have found a reliable extension builder in Osmaston. MTD Brickwork Ltd is a friendly and reliable company based in Osmaston who consid...
From £87,296
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,472
We are a local building company serving the amber valley area working to a high class o...
From £89,080
Acorn Builders is an established extension buildering business in Osmaston. We come highly recommended and provide competitive quotes for your wor...

Building a granny annexe ranges from £86,000 (HUSKINSON CONSTR SRVCS LTD based in NG16) to £89,080 (Acorn Builders based in NG17), 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 Osmaston by posting a job with HaMuch. We will send it to extension builders in Osmaston who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Amber Valley | £31 | £238 |
| Granny Annexe near Belper | £32 | £244 |
| Granny Annexe near Derby | £30 | £228 |
| Granny Annexe near Burton upon Trent | £32 | £255 |
| Granny Annexe near Ripley | £32 | £246 |
| Granny Annexe near Leek | £33 | £254 |
| Granny Annexe near Heanor | £31 | £236 |
| Granny Annexe near Alfreton | £34 | £261 |
| Granny Annexe near Ilkeston | £31 | £236 |
| Granny Annexe near Swadlincote | £31 | £248 |
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 - £17,609

Two storey extension - £88,163

Build a timber frame extension - £26,109

Build a swimming pool - £81,109

Single storey extension - £57,176

Side return extension - £42,724

Install an RSJ - £2,309

Outbuilding - £10,109

Build a Mansard loft conversion - £52,109

Loft conversion - £34,770

Build a kitchen extension - £42,109

Hip to gable loft conversion - £42,109

Granny annexe - £87,109

Garden office - £10,109

Convert a Garage - £16,109

Garage - £18,609

Build a flat roof extension - £22,109

Build a dormer loft conversion - £42,109

Concrete foundations - £6,359

Convert a bungalow loft - £29,109

Convert a basement - £38,724