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

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From £21,312

Last active Nov 26
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B H G M Ltd

Brendan Healy

All building work , all hoyse maintenance. House extension and refurbishment works.

From £21,824

Last active Aug 26
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Christian Builders Margate Ltd

Christian Builders Margate Ltd is a multi-service company founded by Nick Christian. We operate with a highly skilled team of designers, tradesmen,...

From £21,632

Last active Aug 26
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GDB CONSTRUCTION

GDB CONSTRUCTION is a trusted extension builder serving customers in Sandwich and the surrounding area. Contact us to today to get a competitive qu...

From £21,440

Last active Aug 26
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FRK Building Services

Festim Kastrati

We been for almost 15 years in the building trade, 

we are easy going and willing to work with our client and to archive the best r...

From £21,744

Last active Aug 26
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Bespoke building projects

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

Bespoke building projects provides a local, trusted exte...

From £22,032

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Monarch Builders South East Ltd

Jordan Pink

Monarch Builders South East Ltd is an established and experienced local extension builder in Sandwich. Please contact us for a free, no obligation ...

From £21,536

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4D BUILDERS LTD

4D BUILDERS LTD are here to help customers who need an Extension Builder in Sandwich. We offer a competitive rate to complete all yo...

From £21,504

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Christian Builders Margate Ltd

Christian Builders Margate Ltd is an established and experienced local extension builder in Sandwich. Please contact us for a free, no obligation q...

From £21,600

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Paragon Stone Design

Relax... you have found a reliable extension builder in Sandwich. Paragon Stone Design is a friendly and reliable company based in Sandwich who con...

From £21,632

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Coast Projects

Design – our highly experienced design team can help you visualise your dream outcomes, working sympathetically with your space to find the perfe...

Flat roof extension cost in Sandwich

Estimates for build a flat roof extension near Sandwich

A flat roof extension ranges from the cheapest of £21,312 (B H G M Ltd based in CT7) to the dearest of £22,032 (Monarch Builders South East Ltd based in CT9), 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 Sandwich by posting a job with HaMuch. We'll send it to extension builders in Sandwich.


Estimates for common extension builder jobs in Sandwich;

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...