From £86,608
Relax... you have found a reliable extension builder in M23. R A C Gas is a friendly and reliable company based in M23 who consider no job as too b...
From £87,008
Ethos Property Developments Limited is an established extension buildering business in M23. We come highly recommended and provide competitive quot...
From £85,960
Member since November 2019
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,776
Relax... you have found a reliable extension builder in M23. David Anderson Builders is a friendly and reliable company based in M23 who consider n...
From £86,792
Need to find an Extension Builder near you for all your extension buildering work?
DC Contractors provides a local, trusted extension build...
From £86,960
Need to find an Extension Builder near you for all your extension buildering work?
ESBP Specialists Ltd provides a local, trusted extension...
From £86,848
Trusted and professional extension builder in M23. Experienced in all extension buildering work and keeping within budget and on quote. We Build ha...
From £86,608
Need an Extension Builder in M23? MK Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many years. ...
From £86,632
Trusted and professional extension builder in M23. Experienced in all extension buildering work and keeping within budget and on quote. Fit-on Gara...

Building a granny annexe ranges from £85,960 (Aquatec Builder based in OL10) to £87,008 (Ethos Property Developments Limited based in SK15), 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 M23 by posting a job with HaMuch. We will send it to extension builders in M23 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Wythenshawe | £31 | £229 |
| Granny Annexe near Gatley | £31 | £230 |
| Granny Annexe near Sale | £32 | £235 |
| Granny Annexe near Altrincham | £32 | £228 |
| Granny Annexe near Trafford | £32 | £235 |
| Granny Annexe near Stretford | £32 | £235 |
| Granny Annexe near Old Trafford | £32 | £236 |
| Granny Annexe near Cheadle Hulme | £31 | £232 |
| Granny Annexe near Urmston | £32 | £231 |
| Granny Annexe near Wilmslow | £31 | £230 |
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 - £17,138

Two storey extension - £87,456

Build a timber frame extension - £25,638

Build a swimming pool - £80,638

Single storey extension - £47,752

Side return extension - £37,423

Install an RSJ - £1,838

Outbuilding - £9,638

Build a Mansard loft conversion - £51,638

Loft conversion - £30,353

Build a kitchen extension - £41,638

Hip to gable loft conversion - £41,638

Granny annexe - £86,638

Garden office - £9,638

Convert a Garage - £15,638

Garage - £18,138

Build a flat roof extension - £21,638

Build a dormer loft conversion - £41,638

Concrete foundations - £5,888

Convert a bungalow loft - £28,638

Convert a basement - £33,423