Tommy House
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in Bexley and the surrounding area. Contact us to today to get a c...
Lover Build is an established and experienced local extension builder in Bexley. Please contact us for a free, no obligation quote and competitive ...
Pedro
Need an Extension Builder in Bexley? Danni Building Services Ltd has been helping local clients (10 mile radius) with their extension buildering jo...
KENT, DA15
Pro-Tec Roofing & Building Services Ltd is an established and experienced local extension builder in Bexley. Please contact us for a free, no oblig...
R Tredget & Son are here to help customers who need an Extension Builder in Bexley. We offer a competitive rate to complete all your extension buil...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Gary Woolcombe
I am an experienced builder, I jave been in the building game since I left college after doing a 2 year bricklaying apprenticeship.
I ha...
Thomas Ingram
Experienced extension builder ready to quote for your work. Ingram Building and Electrical Contractors LIMTED is the best extension builder in Bexl...
Direct Roofing is an established and experienced local extension builder in Bexley. Please contact us for a free, no obligation quote and competiti...
Darius Kudzevicius
Bexley london, DA15
Trusted and professional extension builder in Bexley. Experienced in all extension buildering work and keeping within budget and on quote. Self emp...

Underpinning ranges from £17,500 (Self employer based in DA15) to £18,116 (HOUSE BUILDING SERVICES LIMITED based in DA16), 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 Bexley by posting a job with HaMuch and we will send it to extension builders in Bexley.
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 - £17,750

Two storey extension - £88,376

Build a timber frame extension - £26,250

Build a swimming pool - £81,250

Single storey extension - £60,008

Side return extension - £44,317

Install an RSJ - £2,450

Outbuilding - £10,250

Build a Mansard loft conversion - £52,250

Loft conversion - £36,098

Build a kitchen extension - £42,250

Hip to gable loft conversion - £42,250

Granny annexe - £87,250

Garden office - £10,250

Convert a Garage - £16,250

Garage - £18,750

Build a flat roof extension - £22,250

Build a dormer loft conversion - £42,250

Concrete foundations - £6,500

Convert a bungalow loft - £29,250

Convert a basement - £40,317