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P R Building is a trusted extension builder serving customers in Tottenham and the surrounding area. Contact us to today to get a competitive quote...
Ali Alagoz
Propello is an established and experienced local extension builder in Tottenham. Please contact us for a free, no obligation quote and competitive...
Relax... you have found a reliable extension builder in Tottenham. 2nwest Builders and Decorators Ltd is a friendly and reliable company based in T...
Experienced extension builder ready to quote for your work. Five Star Builder is the best extension builder in Tottenham. No obligation free quotes...
Dakus Construction Ltd are here to help customers who need an Extension Builder in Tottenham. We offer a competitive rate to complete all your exte...
Dimitar Vakavliev
We are reliable tradesmen delivering quality works with attention to detail
J&H Builder is a trusted extension builder serving customers in Tottenham and the surrounding area. Contact us to today to get a competitive quote ...
M & D BUILDING & DECORATING are here to help customers who need an Extension Builder in Tottenham. We offer a competitive rate to complete all your...
MEGABUILD LTD is a trusted extension builder serving customers in Tottenham and the surrounding area. Contact us to today to get a competitive quot...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Costs range from £87,292 (Bellator Construction Ltd based in N11) to £90,376 (Propello based in E17), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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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 - £17,680

Two storey extension - £88,270

Build a timber frame extension - £26,180

Build a swimming pool - £81,180

Single storey extension - £58,600

Side return extension - £43,525

Install an RSJ - £2,380

Outbuilding - £10,180

Build a Mansard loft conversion - £52,180

Loft conversion - £35,438

Build a kitchen extension - £42,180

Hip to gable loft conversion - £42,180

Granny annexe - £87,180

Garden office - £10,180

Convert a Garage - £16,180

Garage - £18,680

Build a flat roof extension - £22,180

Build a dormer loft conversion - £42,180

Concrete foundations - £6,430

Convert a bungalow loft - £29,180

Convert a basement - £39,525