Extend your 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 Kensington? To see prices and availability for your job click green button.

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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 Kensington. QA's Pointing and Brick Repair is a friendly and reliable company based in Kens...

From £21,928

Last active Nov 26
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BPS Building

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

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 Kensington. M & A UK Ltd is a friendly and reliable company based in Kensington who conside...

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 Kensington. No obligation free quotes and many happ...

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 Kensington. We offer a competitive rate to complete all your exten...

From £24,320

Last active Oct 26
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Reid and Co Developments Ltd

Jay Reid

We are a well established buildng firm who have been providing building services and managing of projects now for 25 years. We have all the necessary ...

From £22,448

Last active Sep 26
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London Construction

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

From £21,976

Last active Sep 26
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A to Z Builders Ltd

A to Z Builders Ltd are here to help customers who need an Extension Builder in Kensington. We offer a competitive rate to complete all your extens...

Flat roof extension cost in Kensington

Estimates for build a flat roof extension near Kensington

A flat roof extension ranges from the cheapest of £21,928 (BPS Building based in NW6) to the dearest of £24,320 (Reid and Co Developments Ltd based in NW8), 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 Kensington by posting a job with HaMuch. We'll send it to extension builders in 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 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...