Extend your West Kensington with an extension

A flat roof extension is a great way to add extra space to your home without splashing out on the costs of a pitched roof extension. Often exempt from planning permission rules, you can build a flat roof extension up to 3 metres in height as long as it's not visible from a road. But how much do they cost in West Kensington? To see prices and availability for your job click green button.

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From £22,448

Last active Nov 26
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London Construction

London Construction is an established and experienced local extension builder in West Kensington. Please contact us for a free, no obligation quote...

From £23,840

Last active Nov 26
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1st & 2nd Fix Vasconstruct

Vas Constructs

RUBBERCOVER™ EPDM Permaroof rubber cover and roof system. Lead flashing. NCTS. Timber Frame Buildings. Refurbish fit out, structural ...

From £22,184

Last active Nov 26
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QA's Pointing and Brick Repair

QA's Pointing Brick Repair

Relax... you have found a reliable extension builder in West Kensington. QA's Pointing and Brick Repair is a friendly and reliable company based in...

From £22,208

Last active Oct 26
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Building Vision London Ltd

Building Vision London Ltd is a trusted extension builder serving customers in West Kensington and the surrounding area. Contact us to today to get...

From £22,256

Last active Oct 26
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Red Box Maintenance Ltd

Red Box are a Fulham-based building and decorating business who work in West and Southwest London, and who specialise in fine interior renovations,...

From £22,360

Last active Oct 26
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M & A UK Ltd

Relax... you have found a reliable extension builder in West Kensington. M & A UK Ltd is a friendly and reliable company based in West Kensington w...

From £22,448

Last active Oct 26
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AJ Wells

Need to find an Extension Builder near you for all your extension buildering work?

AJ Wells provides a local, trusted extension buildering ...

From £22,096

Last active Oct 26
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Mr

Jonathan Rimmer

Experienced extension builder ready to quote for your work. Mr is the best extension builder in West Kensington. No obligation free quotes and many...

From £22,168

Last active Oct 26
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Newpark Construction

Newpark Construction are here to help customers who need an Extension Builder in West Kensington. We offer a competitive rate to complete all your ...

From £22,504

Last active Oct 26
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Ferdas Design & Build Ltd

At Ferdas Design & Build Ltd we have been fitting bespoke bathrooms since 2013. We pride ourselves on being the go-to bathroom fitters for discerni...

Flat roof extension cost in West Kensington

Estimates for build a flat roof extension near West Kensington

A flat roof extension ranges from the cheapest of £22,096 (Mr based in NW10) to the dearest of £23,840 (1st & 2nd Fix Vasconstruct based in W12), 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 West Kensington by posting a job with HaMuch. We'll send it to extension builders in West Kensington.

"Flat roof extension for a period mews terraced house. We'd like a bedroom extension with full bathroom and a roof top terrace. Footprint is roughly 8.5m x 6m." - W6, job posted 10/06/24


Estimates for common extension builder jobs in West Kensington;

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.

More extensions & conversions cost guides...