Convert your basement in SE5 from £37,770

Range from the cheapest Convert a basement £37,770 (AGRI CONSTRUCTION based in SE1) to the dearest Convert a basement £42,630 (Ask Building based in SE1). To see prices and availability for your job click green button.

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From £38,130

Last active Oct 26
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The Perfectionist

Experienced extension builder ready to quote for your work. The Perfectionist is the best extension builder in SE5. No obligation free quotes and m...

From £41,100

Last active Sep 26
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D & G Building & Decorating

Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in SE5. No obligation free qu...

From £40,290

Last active Sep 26
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Cornerstones Construction

Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in SE5. No obligation free quot...

From £39,840

Last active Sep 26
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Vidanov Building Services

Trusted and professional extension builder in SE5. Experienced in all extension buildering work and keeping within budget and on quote. Vidanov Bui...

From £40,380

Last active Sep 26
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DUWIX BUILDING MAINTENANCE

Location

Camberwell, SE5

DUWIX BUILDING MAINTENANCE are here to help customers who need an Extension Builder in SE5. We offer a competitive rate to complete all your extens...

From £38,580

Last active Sep 26
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Building and Plastering Solution

Peter Cesma

Experienced builder in all aspects of building works. All work guaranteed. Quality finish, promt ,honest and reliable services.  Public liabil...

From £39,480

Last active Aug 26
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Home Tranformers Ltd

At Home Tranformers Ltd we have been fitting bespoke bathrooms for over 10 years. We pride ourselves on being the go-to bathroom fitters for discer...

From £42,630

Last active Jul 26
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Ask Building

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

Ask Building provides a local, trusted extension builder...

From £42,270

Last active May 26
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AAA Design Decorators

AAA Design Decorators are here to help customers who need an Extension Builder in SE5. We offer a competitive rate to complete all your extension b...

From £37,770

Last active Feb 26
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AGRI CONSTRUCTION

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

AGRI CONSTRUCTION provides a local, trusted extension bu...

Cheapest builders to convert your basement in SE5

Estimates for convert a basement near SE5

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.

What to do - Get rates and quotes for the cost to convert a basement in SE5 by posting a job with HaMuch and we will send it to  extension builders in SE5.

"Basement conversion" - LAMBETH, job posted 05/02/25


Estimates for common extension builder jobs in SE5;

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...