We send your job to ALL South Norwood extension builders
Available extension builders in South Norwood reply
Select your affordable South Norwood extension builder
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in South Norwood. No obligation fr...
Robert Buci
Buci builders ltd is a trusted extension builder serving customers in South Norwood and the surrounding area. Contact us to today to get a competit...
John Mcdonagh
Watch our short video highlighting all our expertise and services here:
more than 10 y...
From £18,700
Sebastian Banga
Member since August 2025
Banga decoration. Is Base in south London for number of year Banga decoration is a small company. Wich provide an excellent job to the custom...
Cre8tive Contractors Ltd are here to help customers who need an Extension Builder in South Norwood. We offer a competitive rate to complete all you...
Vasi J
No Call out charges!
All Jobs Fully Insured and Guaranteed !!!
All aspects of Plumbing, Heating and Drains....
..."I am very pleased with the work carried out. All very clear and transparent." - ROMFORD,reviewed 10/01/18, KELLY
PW Construction & Renovation Ltd is a trusted extension builder serving customers in South Norwood and the surrounding area. Contact us to today to...
Glenn Miller
Relax... you have found a reliable extension builder in South Norwood. Glenn Miller Builders Limited is a friendly and reliable company based in So...
Relax... you have found a reliable extension builder in South Norwood. L M G Building Services (London) Ltd is a friendly and reliable company base...
Experienced extension builder ready to quote for your work. Aviemore Building Contractors Ltd is the best extension builder in South Norwood. No ob...

Underpinning ranges from £17,484 (RCB Group Design & Build based in SE21) to £18,700 (Banga Decoration based in CR7), 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 South Norwood by posting a job with HaMuch and we will send it to extension builders in South Norwood.
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 - £17,816

Two storey extension - £88,474

Build a timber frame extension - £26,316

Build a swimming pool - £81,316

Single storey extension - £61,320

Side return extension - £45,055

Install an RSJ - £2,516

Outbuilding - £10,316

Build a Mansard loft conversion - £52,316

Loft conversion - £36,713

Build a kitchen extension - £42,316

Hip to gable loft conversion - £42,316

Granny annexe - £87,316

Garden office - £10,316

Convert a Garage - £16,316

Garage - £18,816

Build a flat roof extension - £22,316

Build a dormer loft conversion - £42,316

Concrete foundations - £6,566

Convert a bungalow loft - £29,316

Convert a basement - £41,055