Build additional living space on your property in B8

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 B8? To see prices and availability for your job click Get quotes.

HaMuch is Excellent

Granny annexe cost in B8 - Sort by rates or availability

From £87,048

Member since October 2026

Get quotes

Darthy serices and cleaning

Khondda Olham

We agree on the work, price and appointment before starting. Our approach focuses on clear communication, punctuality, careful workmanship and leav...

From £86,824

Last active Oct 26
Get quotes

G Wilson Building & Roofing Services

Gary Wilson

Reliable person 25 years experience 

if you look on a website rated people and have a look at my ratings 

From £86,704

Last active Sep 26
Get quotes

AJ Home Improvements

AJ Home Improvements is an established extension buildering business in B8. We come highly recommended and provide competitive quotes for your work...

From £86,984

Last active Sep 26
Get quotes

Brickfast Builders

Brickfast Builders is an established extension buildering business in B8. We come highly recommended and provide competitive quotes for your work.<...

From £86,864

Last active Sep 26
Get quotes

LC BUILDING SERVICES

Lloyd Clarke

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

LC BUILDING SERVICES provides a local, trusted extension...

From £86,608

Last active Sep 26
Get quotes

John Kinloch Construction Ltd

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

John Kinloch Construction Ltd provides a local, trusted ...

From £86,688

Last active Feb 26
Get quotes

Castlehall Building Services

Trusted and professional extension builder in B8. Experienced in all extension buildering work and keeping within budget and on quote. Castlehall B...

From £86,656

Last active Feb 26
Get quotes

Guild Building Solutions Ltd

Guild Building Solutions Ltd is a well established, reliable and trustworthy company with over 25 years' experience. We are based in Sutton Coldfie...

From £86,920

Last active Nov 25
Get quotes

x10hosts

Experienced extension builder ready to quote for your work. x10hosts is the best extension builder in B8. No obligation free quotes and many happy ...

From £86,896

Get quotes

DM FLOYD BUILDING

Experienced extension builder ready to quote for your work. DM FLOYD BUILDING is the best extension builder in B8. No obligation free quotes and ma...

Granny Annexe Cost in B8

Estimates for granny annexe near B8

Building a granny annexe ranges from £86,608 (John Kinloch Construction Ltd based in B36) to £87,048 (Darthy serices and cleaning based in B5), 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 B8 by posting a job with HaMuch. We will send it to extension builders in B8 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 Birmingham£28£226
Granny Annexe near Sutton Coldfield£29£228
Granny Annexe near Smethwick£29£225
Granny Annexe near Solihull£29£231
Granny Annexe near Oldbury£29£226
Granny Annexe near West Bromwich£28£225
Granny Annexe near Sandwell£29£228
Granny Annexe near Halesowen£28£225
Granny Annexe near Rowley Regis£29£225
Granny Annexe near Knowle£31£241

Estimates for common extension builder jobs in B8;

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...