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

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From £21,728

Last active Oct 26
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The Philog Paving Services

The Philog Paving Services is an established extension buildering business in Grangetown. We come highly recommended and provide competitive quotes...

From £21,808

Last active Oct 26
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Chapman Builders

Experienced extension builder ready to quote for your work. Chapman Builders is the best extension builder in Grangetown. No obligation free quotes...

From £21,616

Last active Sep 26
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JA Building Maintenance

Location

Grangetown, CF11

Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in Grangetown. No obligation free...

From £21,784

Last active Sep 26
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TOR BUILD

Experienced extension builder ready to quote for your work. TOR BUILD is the best extension builder in Grangetown. No obligation free quotes and ma...

From £21,632

Last active Sep 26
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Charles Marshall Contracting Ltd

Relax... you have found a reliable extension builder in Grangetown. Charles Marshall Contracting Ltd is a friendly and reliable company based in Gr...

From £21,200

Last active Aug 26
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Penarth Loft Conversions Ltd

Bill Coslett

35 years in the trade and there is not much we haven't come across or done from pools to extensions and we specialise in loft conversions

From £21,600

Last active Jul 26
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MARWAY BUILDING LTD

MARWAY BUILDING LTD is a trusted extension builder serving customers in Grangetown and the surrounding area. Contact us to today to get a competiti...

From £21,560

Last active Jul 26
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Elite Building Contractors South Wales

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

From £21,040

Last active Jul 26
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PK CONSTRUCTION

Paul Knox

Trusted and professional extension builder in Grangetown. Experienced in all extension buildering work and keeping within budget and on quote. PK C...

From £21,792

Last active Jul 26
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MCp Home Improvements

MCp Home Improvements is an established and experienced local extension builder in Grangetown. Please contact us for a free, no obligation quote an...

Flat roof extension cost in Grangetown

Estimates for build a flat roof extension near Grangetown

A flat roof extension ranges from the cheapest of £21,040 (PK CONSTRUCTION based in CF14) to the dearest of £21,808 (Chapman Builders based in CF5), 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 Grangetown by posting a job with HaMuch. We'll send it to extension builders in Grangetown.


Estimates for common extension builder jobs in Grangetown;

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...