Radoslaw Rzanek
Trusted and professional extension builder in Greenwich. Experienced in all extension buildering work and keeping within budget and on quote. RR'S ...
Trusted and professional extension builder in Greenwich. Experienced in all extension buildering work and keeping within budget and on quote. AM Bu...
Trusted and professional extension builder in Greenwich. Experienced in all extension buildering work and keeping within budget and on quote. Charl...
Jay Christenson
Experienced extension builder ready to quote for your work. Jmc buildets is the best extension builder in Greenwich. No obligation free quotes and ...
RLD Contractors Ltd is an established and experienced local extension builder in Greenwich. Please contact us for a free, no obligation quote and c...
Rapid Bee Ltd is an established extension buildering business in Greenwich. We come highly recommended and provide competitive quotes for your work...
Trusted and professional extension builder in Greenwich. Experienced in all extension buildering work and keeping within budget and on quote. ROOSE...
Andy Tunmer Building Services is an established and experienced local extension builder in Greenwich. Please contact us for a free, no obligation q...
Andy Hart
Need to find an Extension Builder near you for all your extension buildering work?
Hartigans Construction provides a local, trusted extensi...
Relax... you have found a reliable extension builder in Greenwich. S G Painting Contractor Ltd is a friendly and reliable company based in Greenwic...

Underpinning ranges from £17,116 (Jmc buildets based in SE9) to £17,764 (RR'S Builders based in SE12), 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 Greenwich by posting a job with HaMuch and we will send it to extension builders in Greenwich.
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 - £17,586

Two storey extension - £88,128

Build a timber frame extension - £26,086

Build a swimming pool - £81,086

Single storey extension - £56,712

Side return extension - £42,463

Install an RSJ - £2,286

Outbuilding - £10,086

Build a Mansard loft conversion - £52,086

Loft conversion - £34,553

Build a kitchen extension - £42,086

Hip to gable loft conversion - £42,086

Granny annexe - £87,086

Garden office - £10,086

Convert a Garage - £16,086

Garage - £18,586

Build a flat roof extension - £22,086

Build a dormer loft conversion - £42,086

Concrete foundations - £6,336

Convert a bungalow loft - £29,086

Convert a basement - £38,463