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Swiftdale Developments Ltd
Need the extension buildering job done quickly without breaking the bank? Swiftdale Developments Ltd offer fast, reliable, and affordable extension...
Samuele Paolini
Samuele Paolini
Need an Extension Builder in NW4? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
WHITE EAGLE CONSTRUCTION LTD
Trusted and professional extension builder in NW4. Experienced in all extension buildering work and keeping within budget and on quote. WHITE EAGLE...
Simion PC Construction Ltd
Marcel Simion
Hi everyone!
i have good experience over 25 years working in construction and I have my on Business and my company
"I'm very happy for the job what his done" - LONDON,reviewed 29/09/17, SIMONA
Taylor Construction Services Ltd
Relax... you have found a reliable extension builder in NW4. Taylor Construction Services Ltd is a friendly and reliable company based in NW4 who c...
DS Construction
Trusted and professional extension builder in NW4. Experienced in all extension buildering work and keeping within budget and on quote. DS Construc...
RF Building Services
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
HARLEY BUILDING SERVICES LTD
HARLEY BUILDING SERVICES LTD are here to help customers who need an Extension Builder in NW4. We offer a competitive rate to complete all your exte...
BKB Building Contractors
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
F C Builders London ltd
Fabio Capani
With over 24 years of hands-on experience, FC Builders London Ltd specialises in home extensions, loft conversions, full renovations, kitchen and b...
Flat roof extension cost in NW4
A flat roof extension ranges from the cheapest of £21,664 (F C Builders London ltd based in HA8) to the dearest of £22,432 (BKB Building Contractors based in NW9), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in NW4 by posting a job with HaMuch. We'll send it to extension builders in NW4.
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- Factors affecting the cost of flat roof extensions
- Advantages and disadvantages of flat roofs
- Which is cheaper: a flat roof or pitched roof?
- How long does a flat roof extension take?
- Do you need planning permission for a flat roof extension?
- How long does a flat roof last?
- Can you walk on a flat roof extension?
- What insulation do I need for a flat roof extension?
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Estimates for common extension builder jobs in NW4;
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 - £17,586
Two storey extension - £88,128
Build a timber frame extension - £26,086
Build a swimming pool - £81,086
Single storey extension - £56,712
Side return extension - £42,463
Install an RSJ - £2,286
Outbuilding - £10,086
Build a Mansard loft conversion - £52,086
Loft conversion - £34,553
Build a kitchen extension - £42,086
Hip to gable loft conversion - £42,086
Granny annexe - £87,086
Garden office - £10,086
Convert a Garage - £16,086
Garage - £18,586
Build a flat roof extension - £22,086
Build a dormer loft conversion - £42,086
Concrete foundations - £6,336
Convert a bungalow loft - £29,086
Convert a basement - £38,463