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

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From £21,816

Last active Aug 26
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Eric J Ivins

Eric J Ivins is a trusted extension builder serving customers in Monmouthshire and the surrounding area. Contact us to today to get a competitive q...

From £21,984

Last active Aug 26
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PARTRIDGE - WILSON BUILDERS

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

PARTRIDGE - WILSON BUILDERS provides a local, trusted ex...

From £21,568

Last active Aug 26
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D BENDON CONSTRUCTION LTD

D BENDON CONSTRUCTION LTD is an established and experienced local extension builder in Monmouthshire. Please contact us for a free, no obligation q...

From £21,744

Last active Aug 26
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OWEN BROTHERS CONSTRUCTION LTD

OWEN BROTHERS CONSTRUCTION LTD are here to help customers who need an Extension Builder in Monmouthshire. We offer a competitive rate to complete a...

From £21,768

Last active Dec 25
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JSP Building Contractors Ltd

Our building services company JSP Carpentry & Building Services has 15 years of experience in the industry. Since then, we have been helping custom...

From £21,608

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HEDLYN BUILDING CONTRACTORS

Relax... you have found a reliable extension builder in Monmouthshire. HEDLYN BUILDING CONTRACTORS is a friendly and reliable company based in Mon...

From £21,944

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H VAUGHAN BUILDERS

H VAUGHAN BUILDERS is an established extension buildering business in Monmouthshire. We come highly recommended and provide competitive quotes for ...

Flat roof extension cost in Monmouthshire

Estimates for build a flat roof extension near Monmouthshire

A flat roof extension ranges from the cheapest of £21,568 (D BENDON CONSTRUCTION LTD based in NP4) to the dearest of £21,984 (PARTRIDGE - WILSON BUILDERS based in NP44), 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 Monmouthshire by posting a job with HaMuch. We'll send it to extension builders in Monmouthshire.


Estimates for common extension builder jobs in Monmouthshire;

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...