From £16,048
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in E12. No obligation free quotes ...
From £16,184
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in E12. No obligation free quotes and m...
From £16,312
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £16,560
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 £16,096
Experienced extension builder ready to quote for your work. Mr is the best extension builder in E12. No obligation free quotes and many happy custo...
From £15,984
JK Doors is a trusted extension builder serving customers in E12 and the surrounding area. Contact us to today to get a competitive quote for exten...
From £16,192
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
From £16,392
Need an Extension Builder in E12? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £16,312
skilled worker who specializes in completing a wide range of building and renovation projects
From £16,616
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in E12 and the surrounding area. Contact us to today to get a comp...

Garage conversions in E12 typically range from £15,984 (JK Doors based in W1W) to £16,616 (HOUSE BUILDING SERVICES LIMITED based in DA16), but the only way to get an accurate cost for your specific project is to get quotes.
Post a job with HaMuch and we'll send it to extension builders in E12 who will be happy to help.
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 - £17,770

Two storey extension - £88,404

Build a timber frame extension - £26,270

Build a swimming pool - £81,270

Single storey extension - £60,392

Side return extension - £44,533

Install an RSJ - £2,470

Outbuilding - £10,270

Build a Mansard loft conversion - £52,270

Loft conversion - £36,278

Build a kitchen extension - £42,270

Hip to gable loft conversion - £42,270

Granny annexe - £87,270

Garden office - £10,270

Convert a Garage - £16,270

Garage - £18,770

Build a flat roof extension - £22,270

Build a dormer loft conversion - £42,270

Concrete foundations - £6,520

Convert a bungalow loft - £29,270

Convert a basement - £40,533