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

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From £23,200

Rates updated Oct 26
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Oakwood Construction

Building Beautiful Homes Since 1980Welcome to Oakwood Construction. Here in the heart of the Midlands, we are more than simply your new home builde...

From £21,776

Last active Oct 26
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Benton Builders

Benton Builders is an established and experienced local extension builder in Knowle. Please contact us for a free, no obligation quote and competit...

From £21,880

Last active Oct 26
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Tucker Construction

Relax... you have found a reliable extension builder in Knowle. Tucker Construction is a friendly and reliable company based in Knowle who consider...

From £21,960

Last active Oct 26
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SM&S General Property Repairs

SM&S General Property Repairs is a trusted extension builder serving customers in Knowle and the surrounding area. Contact us to today to get a com...

From £21,824

Last active Oct 26
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G Wilson Building & Roofing Services

Gary Wilson

Reliable person 25 years experience 

if you look on a website rated people and have a look at my ratings 

From £21,712

Last active Oct 26
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BAKER CONSTRUCTION

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

BAKER CONSTRUCTION provides a local, trusted extension b...

From £21,944

Last active Oct 26
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Avonvale Garage Doors

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

Avonvale Garage Doors provides a local, trusted extensio...

From £21,880

Last active Sep 26
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IMAGE BUILDING SERVICES LMT

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

From £22,064

Last active Sep 26
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MYBUILD

Ben Birch

I have been in the building industry for 28 years and have carried out extensions,loft conversions, knock throughs, plastering, carpentry,roofing a...

From £21,728

Last active Sep 26
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F.I.I Building Services Ltd

Relax... you have found a reliable extension builder in Knowle. F.I.I Building Services Ltd is a friendly and reliable company based in Knowle who ...

Flat roof extension cost in Knowle

Estimates for build a flat roof extension near Knowle

A flat roof extension ranges from the cheapest of £21,712 (BAKER CONSTRUCTION based in CV5) to the dearest of £23,200 (Oakwood Construction based in CV4), 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 Knowle by posting a job with HaMuch. We'll send it to extension builders in Knowle.


Estimates for common extension builder jobs in Knowle;

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...