Build additional living space on your property in SA70

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 SA70?

Granny annexe cost in SA70 - Sort by rates or availability

Graham & Co Home Improvement Specialists

From £86,848

(last active 02/03/26)

Need an Extension Builder in SA70? Graham & Co Home Improvement Specialists has been helping local clients (20 mile radius) with their extension bu...

Lawtons Property Services

From £86,432

Trusted and professional extension builder in SA70. Experienced in all extension buildering work and keeping within budget and on quote. Lawtons Pr...

F & E Construction

From £86,736

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Cleaning Services - We Can Do It

From £86,184

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

D&O Construction Ltd

From £86,320

Relax... you have found a reliable extension builder in SA70. D&O Construction Ltd is a friendly and reliable company based in SA70 who consider no...

Gainzy Builders

From £86,216

Experienced extension builder ready to quote for your work. Gainzy Builders is the best extension builder in SA70. No obligation free quotes and ma...

Gripp Construction

From £86,224

Reliable . Quility workmanship 

N Morgans & Son Ltd

From £86,936

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

N Morgans & Son Ltd provides a local, trusted extension ...

WW BUILDERS

From £86,704

Experienced extension builder ready to quote for your work. WW BUILDERS is the best extension builder in SA70. No obligation free quotes and many ...

Granny Annexe Cost in SA70

Estimates for granny annexe near SA70

Building a granny annexe ranges from £86,184 (Cleaning Services - We Can Do It based in SA73) to £86,936 (N Morgans & Son Ltd based in SA33), 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 SA70 by posting a job with HaMuch. We will send it to extension builders in SA70 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 Pembrokeshire£19£163
Granny Annexe near Milford Haven£18£159
Granny Annexe near Carmarthenshire£26£205
Granny Annexe near Carmarthen£26£205
Granny Annexe near Llanelli£29£231
Granny Annexe near Gorseinon£29£228

Estimates for common extension builder jobs in SA70;

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...