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Need an Extension Builder in Northolt? Ava Constructions & Decors Ltd has been helping local clients (10 mile radius) with their extension builderi...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Bill Matharu
Matharu Buildings is an established extension buildering business in Northolt. We come highly recommended and provide competitive quotes for your w...
Mario Prajar Building Services is an established and experienced local extension builder in Northolt. Please contact us for a free, no obligation q...
Need to find an Extension Builder near you for all your extension buildering work?
MAX CONSTRUCTION LTD provides a local, trusted extension...
Northolt, UB5
Vital Builders are here to help customers who need an Extension Builder in Northolt. We offer a competitive rate to complete all your extension bui...
Relax... you have found a reliable extension builder in Northolt. C T Edwards is a friendly and reliable company based in Northolt who consider no ...
Northolt, UB5
Need to find an Extension Builder near you for all your extension buildering work?
J K GENERAL BUILDING LTD provides a local, trusted exten...
ALG Renovations is a well established, trustworthy, reliable and professional operation with over 17 years experience myself in the trade, base...
Hardeep Samra
MJ Builders (London) Ltd are here to help customers who need an Extension Builder in Northolt. We offer a competitive rate to complete all your ext...

A timber frame extension built in Northolt typically ranges from £25,880 (MAX CONSTRUCTION LTD based in HA4) to £26,344 (C T Edwards based in HA4), 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 Northolt by posting a job with HaMuch and we'll send it to extension builders in Northolt.
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 - £17,600

Two storey extension - £88,150

Build a timber frame extension - £26,100

Build a swimming pool - £81,100

Single storey extension - £57,000

Side return extension - £42,625

Install an RSJ - £2,300

Outbuilding - £10,100

Build a Mansard loft conversion - £52,100

Loft conversion - £34,688

Build a kitchen extension - £42,100

Hip to gable loft conversion - £42,100

Granny annexe - £87,100

Garden office - £10,100

Convert a Garage - £16,100

Garage - £18,600

Build a flat roof extension - £22,100

Build a dormer loft conversion - £42,100

Concrete foundations - £6,350

Convert a bungalow loft - £29,100

Convert a basement - £38,625