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Mick Singh
At Building Services Contractors we pride ourselves on an efficient and friendly service, and strive to achieve 100% customer satisfaction.
Ali Alagoz
Propello is an established and experienced local extension builder in Seven Sisters. Please contact us for a free, no obligation quote and competi...
SJ Expert Building Services are here to help customers who need an Extension Builder in Seven Sisters. We offer a competitive rate to complete all ...
Relax... you have found a reliable extension builder in Seven Sisters. 2nwest Builders and Decorators Ltd is a friendly and reliable company based ...
Experienced extension builder ready to quote for your work. Five Star Builder is the best extension builder in Seven Sisters. No obligation free qu...
Dakus Construction Ltd are here to help customers who need an Extension Builder in Seven Sisters. We offer a competitive rate to complete all your ...
Dimitar Vakavliev
We are reliable tradesmen delivering quality works with attention to detail
J&H Builder is a trusted extension builder serving customers in Seven Sisters and the surrounding area. Contact us to today to get a competitive qu...
MEGABUILD LTD is a trusted extension builder serving customers in Seven Sisters and the surrounding area. Contact us to today to get a competitive ...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

A timber frame extension built in Seven Sisters typically ranges from £25,528 (Bellator Construction Ltd based in N11) to £27,584 (Propello based in E17), but this will vary depending on the size of your extension, the design features you'd like and what your soil is like for the foundations.
Comparing extension builders estimates for building a timber frame extension gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build a timber frame extension in Seven Sisters by posting a job with HaMuch and we'll send it to extension builders in Seven Sisters.
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 - £17,711

Two storey extension - £88,317

Build a timber frame extension - £26,211

Build a swimming pool - £81,211

Single storey extension - £59,224

Side return extension - £43,876

Install an RSJ - £2,411

Outbuilding - £10,211

Build a Mansard loft conversion - £52,211

Loft conversion - £35,730

Build a kitchen extension - £42,211

Hip to gable loft conversion - £42,211

Granny annexe - £87,211

Garden office - £10,211

Convert a Garage - £16,211

Garage - £18,711

Build a flat roof extension - £22,211

Build a dormer loft conversion - £42,211

Concrete foundations - £6,461

Convert a bungalow loft - £29,211

Convert a basement - £39,876