Lee Townsend
Need to find an Extension Builder near you for all your extension buildering work?
Lp Townsend Brickwork provides a local, trusted extensio...
Relax... you have found a reliable extension builder in London. GDW Construction is a friendly and reliable company based in London who consider no...
Need to find an Extension Builder near you for all your extension buildering work?
OAK HOUSE BESPOKE BUILDERS provides a local, trusted ext...
Sean Smithers
Our building services company SDS Constructions has been established for many years and have been providing customers in Dagenham and the surroundi...
Vasile Boghean
Optimus Build Solutions delivers exceptional construction services in London and surronding areas. Specializing in bathroom and kitchen refurbishme...
SC General Builders Ltd are here to help customers who need an Extension Builder in London. We offer a competitive rate to complete all your extens...
Mandala Building Services is a family-owned design and build maintenance company, encompassing everything from residential refurbishment to large-s...
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in London. No obligation free quot...
QA's Pointing Brick Repair
Relax... you have found a reliable extension builder in London. QA's Pointing and Brick Repair is a friendly and reliable company based in London w...

A timber frame extension built in London typically ranges from £25,920 (Lp Townsend Brickwork based in SL2) to £27,232 (Optimus Build Solutions based in Rm1), but this will vary depending on the size of your extension, the design features you'd like and what your soil is like for the foundations.
Comparing extension builders estimates for building a timber frame extension gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build a timber frame extension in London by posting a job with HaMuch and we'll send it to extension builders in London.
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 - £17,919

Two storey extension - £88,629

Build a timber frame extension - £26,419

Build a swimming pool - £81,419

Single storey extension - £63,384

Side return extension - £46,216

Install an RSJ - £2,619

Outbuilding - £10,419

Build a Mansard loft conversion - £52,419

Loft conversion - £37,680

Build a kitchen extension - £42,419

Hip to gable loft conversion - £42,419

Granny annexe - £87,419

Garden office - £10,419

Convert a Garage - £16,419

Garage - £18,919

Build a flat roof extension - £22,419

Build a dormer loft conversion - £42,419

Concrete foundations - £6,669

Convert a bungalow loft - £29,419

Convert a basement - £42,216