Extend your Letchworth 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 Letchworth? 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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R&J Building Services Ltd

Need an Extension Builder in Letchworth? R&J Building Services Ltd has been helping local clients (20 mile radius) with their extension buildering ...

From £22,384

Last active Nov 26
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HB Construction

Experienced extension builder ready to quote for your work. HB Construction is the best extension builder in Letchworth. No obligation free quotes ...

From £22,144

Last active Jul 26
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Amcell Renovations

Trusted and professional extension builder in Letchworth. Experienced in all extension buildering work and keeping within budget and on quote. Amce...

From £22,208

Last active Jul 26
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WILLMOTT DIXON CONSTRUCTION LI

Location

Letchworth, SG6

Need an Extension Builder in Letchworth? WILLMOTT DIXON CONSTRUCTION LI has been helping local clients (20 mile radius) with their extension builde...

From £22,192

Last active May 26
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Red Swan Construction

In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...

From £22,016

Last active Apr 26
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G B BUILDSTORE LTD

Gary Braine

Experienced extension builder ready to quote for your work. G B BUILDSTORE LTD is the best extension builder in Letchworth. No obligation free quot...

From £22,488

Last active Apr 26
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M SPINDLER CONSTRUCTION LTD

Location

Letchworth, SG6

Need an Extension Builder in Letchworth? M SPINDLER CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension builderin...

From £22,192

Last active Mar 26
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TCL BUILDING SOLUTIONS LTD

TCL BUILDING SOLUTIONS LTD are here to help customers who need an Extension Builder in Letchworth. We offer a competitive rate to complete all your...

From £22,456

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Steve Rolt Home Improvements Ltd

Steve Rolt Home Improvements Ltd was founded in 2016 in Buntingford, Hertfordshire, and from small beginnings, has gone from stren...

From £22,120

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North Hertfordshire Construction Ltd

James Hogbourne

For more than 10 years, North Hertfordshire Construction LTD have been the name you can trust when it comes to building and development! We are kno...

Flat roof extension cost in Letchworth

Estimates for build a flat roof extension near Letchworth

A flat roof extension ranges from the cheapest of £21,848 (R&J Building Services Ltd based in SG17) to the dearest of £22,488 (M SPINDLER CONSTRUCTION LTD based in SG6), 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 Letchworth by posting a job with HaMuch. We'll send it to extension builders in Letchworth.


Estimates for common extension builder jobs in Letchworth;

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...