From £88,072
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in RM12. No obligation free quotes...
From £88,588
Need an Extension Builder in RM12? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many ye...
From £88,072
Trusted and professional extension builder in RM12. Experienced in all extension buildering work and keeping within budget and on quote. WHITE EAGL...
From £87,880
Masonic Plumbing and Heating Ltd are here to help customers who need an Extension Builder in RM12. We offer a competitive rate to complete all your...
From £88,288
Gb construction are here to help customers who need an Extension Builder in RM12. We offer a competitive rate to complete all your extension build...
From £88,276
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in RM12. No obligation free quotes and ...
From £88,840
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 £88,144
Experienced extension builder ready to quote for your work. Mr is the best extension builder in RM12. No obligation free quotes and many happy cust...
From £87,976
JK Doors is a trusted extension builder serving customers in RM12 and the surrounding area. Contact us to today to get a competitive quote for exte...
From £88,288
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...

Costs range from £87,880 (Masonic Plumbing and Heating Ltd based in BR2) to £88,840 (Rafix Building based in EN4), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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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 - £17,662

Two storey extension - £88,242

Build a timber frame extension - £26,162

Build a swimming pool - £81,162

Single storey extension - £58,232

Side return extension - £43,318

Install an RSJ - £2,362

Outbuilding - £10,162

Build a Mansard loft conversion - £52,162

Loft conversion - £35,265

Build a kitchen extension - £42,162

Hip to gable loft conversion - £42,162

Granny annexe - £87,162

Garden office - £10,162

Convert a Garage - £16,162

Garage - £18,662

Build a flat roof extension - £22,162

Build a dormer loft conversion - £42,162

Concrete foundations - £6,412

Convert a bungalow loft - £29,162

Convert a basement - £39,318