Build additional living space on your property in M23

A granny annexe is the ideal solution for offering a young family member their own space in your home while they save up for their own house, or to help an older relative have some independence while keeping them at a safe distance. But how much do they cost to build in M23?

Granny annexe cost in M23 - Sort by rates or availability

R A C Gas

From £86,608

(last active 02/10/26)

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...

Ethos Property Developments Limited

From £87,008

(last active 30/09/26)

Ethos Property Developments Limited is an established extension buildering business in M23. We come highly recommended and provide competitive quot...

Aquatec Builder

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...

David Anderson Builders

From £86,776

(last active 22/09/26)

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...

DC Contractors

From £86,792

(last active 22/09/26)

Need to find an Extension Builder near you for all your extension buildering work?

DC Contractors provides a local, trusted extension build...

ESBP Specialists Ltd

From £86,960

(last active 22/09/26)

Need to find an Extension Builder near you for all your extension buildering work?

ESBP Specialists Ltd provides a local, trusted extension...

We Build

From £86,848

(last active 22/09/26)

Trusted and professional extension builder in M23. Experienced in all extension buildering work and keeping within budget and on quote. We Build ha...

Valdecor

From £86,184

(last active 22/09/26)

20 years experience. 

Great recommendations. 

MK Builders

From £86,608

(last active 22/09/26)

Need an Extension Builder in M23? MK Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many years. ...

Fit-on Garage Doors

From £86,632

(last active 22/09/26)

Trusted and professional extension builder in M23. Experienced in all extension buildering work and keeping within budget and on quote. Fit-on Gara...

Granny Annexe Cost in M23

Estimates for granny annexe near M23

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.


Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily 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

Estimates for common extension builder jobs in M23;

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.

More extensions & conversions cost guides...