From £17,420
Masonic Plumbing and Heating Ltd are here to help customers who need an Extension Builder in RM14. We offer a competitive rate to complete all your...
From £17,684
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in RM14. No obligation free quotes and ...
From £18,060
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 £17,484
JK Doors is a trusted extension builder serving customers in RM14 and the surrounding area. Contact us to today to get a competitive quote for exte...
From £17,692
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
From £17,812
skilled worker who specializes in completing a wide range of building and renovation projects
From £18,116
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in RM14 and the surrounding area. Contact us to today to get a com...
From £17,700
Relax... you have found a reliable extension builder in RM14. Derryard Construction Ltd is a friendly and reliable company based in RM14 who consid...
From £17,468
B J CULLEN BUILDERS are here to help customers who need an Extension Builder in RM14. We offer a competitive rate to complete all your extension bu...
From £17,532
Relax... you have found a reliable extension builder in RM14. Major Building Contractors Ltd is a friendly and reliable company based in RM14 who c...

Underpinning ranges from £17,420 (Masonic Plumbing and Heating Ltd based in BR2) to £18,116 (HOUSE BUILDING SERVICES LIMITED based in DA16), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in RM14 by posting a job with HaMuch and we will send it to extension builders in RM14.
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 - £17,697

Two storey extension - £88,295

Build a timber frame extension - £26,197

Build a swimming pool - £81,197

Single storey extension - £58,936

Side return extension - £43,714

Install an RSJ - £2,397

Outbuilding - £10,197

Build a Mansard loft conversion - £52,197

Loft conversion - £35,595

Build a kitchen extension - £42,197

Hip to gable loft conversion - £42,197

Granny annexe - £87,197

Garden office - £10,197

Convert a Garage - £16,197

Garage - £18,697

Build a flat roof extension - £22,197

Build a dormer loft conversion - £42,197

Concrete foundations - £6,447

Convert a bungalow loft - £29,197

Convert a basement - £39,714