We provide our clients with excellent service and quality. Whether you are looking to extend or upgrade, our professional team has the skills and e...
Experienced extension builder ready to quote for your work. The Perfectionist is the best extension builder in Brockley. No obligation free quotes ...
Radoslaw Rzanek
Trusted and professional extension builder in Brockley. Experienced in all extension buildering work and keeping within budget and on quote. RR'S B...
Jay Christenson
Experienced extension builder ready to quote for your work. Jmc buildets is the best extension builder in Brockley. No obligation free quotes and m...
RLD Contractors Ltd is an established and experienced local extension builder in Brockley. Please contact us for a free, no obligation quote and co...
Trusted and professional extension builder in Brockley. Experienced in all extension buildering work and keeping within budget and on quote. Vidano...
DUWIX BUILDING MAINTENANCE are here to help customers who need an Extension Builder in Brockley. We offer a competitive rate to complete all your e...
Rapid Bee Ltd is an established extension buildering business in Brockley. We come highly recommended and provide competitive quotes for your work....
At Home Tranformers Ltd we have been fitting bespoke bathrooms for over 10 years. We pride ourselves on being the go-to bathroom fitters for discer...
Need to find an Extension Builder near you for all your extension buildering work?
Ask Building provides a local, trusted extension builder...

Underpinning ranges from £17,116 (Jmc buildets based in SE9) to £17,956 (Ask Building based in SE1), 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 Brockley by posting a job with HaMuch and we will send it to extension builders in Brockley.
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 - £17,608

Two storey extension - £88,162

Build a timber frame extension - £26,108

Build a swimming pool - £81,108

Single storey extension - £57,160

Side return extension - £42,715

Install an RSJ - £2,308

Outbuilding - £10,108

Build a Mansard loft conversion - £52,108

Loft conversion - £34,763

Build a kitchen extension - £42,108

Hip to gable loft conversion - £42,108

Granny annexe - £87,108

Garden office - £10,108

Convert a Garage - £16,108

Garage - £18,608

Build a flat roof extension - £22,108

Build a dormer loft conversion - £42,108

Concrete foundations - £6,358

Convert a bungalow loft - £29,108

Convert a basement - £38,715