Extend your Thornaby-on-tees 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 Thornaby-on-tees? To see prices and availability for your job click green button.

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From £21,744

Last active Oct 26
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Empire Building Contracts

Trusted and professional extension builder in Thornaby-on-tees. Experienced in all extension buildering work and keeping within budget and on quote...

From £21,880

Last active Aug 26
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Under Pressure

Relax... you have found a reliable extension builder in Thornaby-on-tees. Under Pressure is a friendly and reliable company based in Thornaby-on-te...

From £21,936

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Design Consultancy & Construction Services Ltd

Design Consultancy & Construction Services Ltd are here to help customers who need an Extension Builder in Thornaby-on-tees. We offer a competitive...

From £21,976

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M&K BEDROOM DESIGNS

Need an Extension Builder in Thornaby-on-tees? M&K BEDROOM DESIGNS has been helping local clients (20 mile radius) with their extension buildering ...

Flat roof extension cost in Thornaby-on-tees

Estimates for build a flat roof extension near Thornaby-on-tees

A flat roof extension ranges from the cheapest of £21,744 (Empire Building Contracts based in TS18) to the dearest of £21,976 (M&K BEDROOM DESIGNS based in TS6), 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 Thornaby-on-tees by posting a job with HaMuch. We'll send it to extension builders in Thornaby-on-tees.


Estimates for common extension builder jobs in Thornaby-on-tees;

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.

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