From £36,150
Greater London, SW6
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £40,560
I am a MCIOB construction manager. Working in the construction and architectural industry has always been a passion of mine. Following completion o...
From £41,280
Greater London, SW6
Pascal Huser Design & Build are here to help customers who need an Extension Builder in SW6. We offer a competitive rate to complete all your exten...
From £36,510
Trusted and professional extension builder in SW6. Experienced in all extension buildering work and keeping within budget and on quote. Firfield Co...
From £39,750
Greater London, SW6
Eugene Perera is a trusted extension builder serving customers in SW6 and the surrounding area. Contact us to today to get a competitive quote for ...
From £41,280
Patricia Cox represents the fourth generation of a family commitment to the design and build of comfortable spaces for enjoyment and relaxation of ...
From £40,470
London, SW6
A to Z Design and Build ltd are here to help customers who need an Extension Builder in SW6. We offer a competitive rate to complete all your exten...
From £39,480
A to Z Design and Build ltd provides a complete Design-Build service for residential home renovations across Central and South-London. We offer a c...
From £36,780
London, SW6
GDL Property is an established extension buildering business in SW6. We come highly recommended and provide competitive quotes for your work.
From £41,460
Experienced extension builder ready to quote for your work. ELLEN MARTIN is the best extension builder in SW6. No obligation free quotes and many h...

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in SW6 by posting a job with HaMuch and we will send it to extension builders in SW6.
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 - £17,666

Two storey extension - £88,250

Build a timber frame extension - £26,166

Build a swimming pool - £81,166

Single storey extension - £58,328

Side return extension - £43,372

Install an RSJ - £2,366

Outbuilding - £10,166

Build a Mansard loft conversion - £52,166

Loft conversion - £35,310

Build a kitchen extension - £42,166

Hip to gable loft conversion - £42,166

Granny annexe - £87,166

Garden office - £10,166

Convert a Garage - £16,166

Garage - £18,666

Build a flat roof extension - £22,166

Build a dormer loft conversion - £42,166

Concrete foundations - £6,416

Convert a bungalow loft - £29,166

Convert a basement - £39,372