From £17,452
Our building services company Ruspi Ltd has many years of experience.We have been helping customers in London and the surrounding area by p...
From £17,540
Greater London, SE20
Need to find an Extension Builder near you for all your extension buildering work?
Smartroofingbuildingcontractorsltd provides a local, tru...
From £17,844
Relax... you have found a reliable extension builder in Penge. Glenn Miller Builders Limited is a friendly and reliable company based in Penge who ...
From £17,532
Pure building is an established extension buildering business in Penge. We come highly recommended and provide competitive quotes for your work.
From £17,916
CROMARTY CONSTRUCTION is a trusted extension builder serving customers in Penge and the surrounding area. Contact us to today to get a competitive ...
From £17,684
Experienced extension builder ready to quote for your work. Skim King is the best extension builder in Penge. No obligation free quotes and many ha...
From £17,524
Wisebirds Builders is an established extension buildering business in Penge. We come highly recommended and provide competitive quotes for your wor...
From £17,580
Experienced extension builder ready to quote for your work. LivingFunky is the best extension builder in Penge. No obligation free quotes and many ...
From £17,452
Need an Extension Builder in Penge? Hatfield-Marcus has been helping local clients (10 mile radius) with their extension buildering jobs for many y...
From £17,324
Livo builders is a trusted extension builder serving customers in Penge and the surrounding area. Contact us to today to get a competitive quote f...

Underpinning ranges from £17,324 (Livo builders based in Br3) to £17,916 (CROMARTY CONSTRUCTION based in BR3), 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 Penge by posting a job with HaMuch and we will send it to extension builders in Penge.
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 - £17,585

Two storey extension - £88,127

Build a timber frame extension - £26,085

Build a swimming pool - £81,085

Single storey extension - £56,696

Side return extension - £42,454

Install an RSJ - £2,285

Outbuilding - £10,085

Build a Mansard loft conversion - £52,085

Loft conversion - £34,545

Build a kitchen extension - £42,085

Hip to gable loft conversion - £42,085

Granny annexe - £87,085

Garden office - £10,085

Convert a Garage - £16,085

Garage - £18,585

Build a flat roof extension - £22,085

Build a dormer loft conversion - £42,085

Concrete foundations - £6,335

Convert a bungalow loft - £29,085

Convert a basement - £38,454