Build additional living space on your property in Dumbarton

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 Dumbarton? To see prices and availability for your job click green button.

HaMuch is Excellent

How HaMuch saves you money

Post your job for free

Post your job for free

We send your job to ALL Dumbarton extension builders

Compare quotes

Compare quotes

Available extension builders in Dumbarton reply

Save Money

Save Money

Select your affordable Dumbarton extension builder

Post your job

From £86,376

Last active Jul 26
Get quotes

Glencroft Builders Ltd

Experienced extension builder ready to quote for your work. Glencroft Builders Ltd is the best extension builder in Dumbarton. No obligation free q...

From £87,272

Last active Apr 26
Get quotes

LOCHNAGAR CONSTRUCTION LTD

LOCHNAGAR CONSTRUCTION LTD is a trusted extension builder serving customers in Dumbarton and the surrounding area. Contact us to today to get a com...

From £87,104

Last active Apr 26
Get quotes

DRUMKINNON JOINERY & BUILDING

DRUMKINNON JOINERY & BUILDING is a trusted extension builder serving customers in Dumbarton and the surrounding area. Contact us to today to get a ...

From £87,288

Last active Apr 26
Get quotes

GH BUILDING SERVICES LTD

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

From £86,600

Get quotes

CR Joiners

Craig Ross

Trusted and professional extension builder in Dumbarton. Experienced in all extension buildering work and keeping within budget and on quote. CR Jo...

Granny Annexe Cost in Dumbarton

Estimates for granny annexe near Dumbarton

Building a granny annexe ranges from £86,376 (Glencroft Builders Ltd based in G81) to £87,288 (GH BUILDING SERVICES LTD based in PA14), 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 Dumbarton by posting a job with HaMuch. We will send it to extension builders in Dumbarton 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 Dumbarton£29£232
Granny Annexe near Greenock£30£243
Granny Annexe near Port Glasgow£32£250
Granny Annexe near Erskine£34£258
Granny Annexe near Clydebank£35£265
Granny Annexe near Renfrewshire£35£278
Granny Annexe near Renfrew£35£264
Granny Annexe near Johnstone£35£276
Granny Annexe near Paisley£34£259
Granny Annexe near Bearsden£34£263

Estimates for common extension builder jobs in Dumbarton;

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...