Extend your L20 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 L20? To see prices and availability for your job click green button.

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From £21,848

Last active Nov 26
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S.L.P Property Maintenance

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

S.L.P Property Maintenance provides a local, trusted ext...

From £21,912

Last active Nov 26
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Derek J Platt & Co

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

Derek J Platt & Co provides a local, trusted extension b...

From £21,696

Last active Nov 26
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Robuild - Waterwise

Robuild - Waterwise is an established extension buildering business in L20. We come highly recommended and provide competitive quotes for your work...

From £21,936

Last active Nov 26
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P & P Building Services

Peter Gallagher

Experienced extension builder ready to quote for your work. P & P Building Services is the best extension builder in L20. No obligation free quotes...

From £21,672

Last active Nov 26
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J.M.C Building Services

J.M.C Building Services is a trusted extension builder serving customers in L20 and the surrounding area. Contact us to today to get a competitive ...

From £21,768

Last active Nov 26
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KM Building Services

Relax... you have found a reliable extension builder in L20. KM Building Services is a friendly and reliable company based in L20 who consider no j...

From £21,904

Last active Nov 26
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Bob the Builder

Need an Extension Builder in L20? Bob the Builder has been helping local clients (20 mile radius) with their extension buildering jobs for many yea...

From £21,576

Last active Oct 26
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BTC Bernstef Ltd

BTC Bernstef Ltd is an established extension buildering business in L20. We come highly recommended and provide competitive quotes for your work.

From £21,768

Last active Oct 26
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T&T Building Contractors

Thomas Healey

Need an Extension Builder in L20? T&T Building Contractors has been helping local clients (20 mile radius) with their extension buildering jobs for...

From £21,760

Last active Oct 26
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CJ Construction

CJ Construction are here to help customers who need an Extension Builder in L20. We offer a competitive rate to complete all your extension builder...

Flat roof extension cost in L20

Estimates for build a flat roof extension near L20

A flat roof extension ranges from the cheapest of £21,576 (BTC Bernstef Ltd based in L23) to the dearest of £21,936 (P & P Building Services based in L11), 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 L20 by posting a job with HaMuch. We'll send it to extension builders in L20.


Estimates for common extension builder jobs in L20;

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...