From £38,040
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Richmond Upon Thames. No obliga...
From £41,010
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £43,800
Our homes need to be regularly maintained and from time to time they need to be rejuvenated, modernised and enhanced. When it comes to building wor...
From £38,580
Experienced extension builder ready to quote for your work. Mr is the best extension builder in Richmond Upon Thames. No obligation free quotes and...
From £37,320
JK Doors is a trusted extension builder serving customers in Richmond Upon Thames and the surrounding area. Contact us to today to get a competitiv...
From £39,660
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
From £41,910
Need an Extension Builder in Richmond Upon Thames? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering ...
From £44,430
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in Richmond Upon Thames and the surrounding area. Contact us to to...
From £39,750
Relax... you have found a reliable extension builder in Richmond Upon Thames. Derryard Construction Ltd is a friendly and reliable company based in...
From £36,330
Experienced extension builder ready to quote for your work. Jhon is the best extension builder in Richmond Upon Thames. No obligation free quotes a...

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 Richmond Upon Thames by posting a job with HaMuch and we will send it to extension builders in Richmond Upon Thames.
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 - £17,730

Two storey extension - £88,344

Build a timber frame extension - £26,230

Build a swimming pool - £81,230

Single storey extension - £59,592

Side return extension - £44,083

Install an RSJ - £2,430

Outbuilding - £10,230

Build a Mansard loft conversion - £52,230

Loft conversion - £35,903

Build a kitchen extension - £42,230

Hip to gable loft conversion - £42,230

Granny annexe - £87,230

Garden office - £10,230

Convert a Garage - £16,230

Garage - £18,730

Build a flat roof extension - £22,230

Build a dormer loft conversion - £42,230

Concrete foundations - £6,480

Convert a bungalow loft - £29,230

Convert a basement - £40,083