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Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Tulse Hill. No obligation free ...
John Mcdonagh
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more than 10 y...
From £51,000
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...
Robert Buci
Buci builders ltd is a trusted extension builder serving customers in Tulse Hill and the surrounding area. Contact us to today to get a competitive...
Langston Builders is a trusted extension builder serving customers in Tulse Hill and the surrounding area. Contact us to today to get a competitive...
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 Tulse Hill and the surrounding area. Contact us to today to ge...
Experienced extension builder ready to quote for your work. The Perfectionist is the best extension builder in Tulse Hill. No obligation free quote...
Glenn Miller
Relax... you have found a reliable extension builder in Tulse Hill. Glenn Miller Builders Limited is a friendly and reliable company based in Tulse...
Relax... you have found a reliable extension builder in Tulse Hill. PRM BUILDING is a friendly and reliable company based in Tulse Hill who conside...

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in Tulse Hill by posting a job with HaMuch and we will send it to extension builders in Tulse Hill.
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 - £17,828

Two storey extension - £88,492

Build a timber frame extension - £26,328

Build a swimming pool - £81,328

Single storey extension - £61,560

Side return extension - £45,190

Install an RSJ - £2,528

Outbuilding - £10,328

Build a Mansard loft conversion - £52,328

Loft conversion - £36,825

Build a kitchen extension - £42,328

Hip to gable loft conversion - £42,328

Granny annexe - £87,328

Garden office - £10,328

Convert a Garage - £16,328

Garage - £18,828

Build a flat roof extension - £22,328

Build a dormer loft conversion - £42,328

Concrete foundations - £6,578

Convert a bungalow loft - £29,328

Convert a basement - £41,190