Convert your basement in Plymouth from £31,650

Range from the cheapest Convert a basement £31,650 (Donovan Construction based in PL6) to the dearest Convert a basement £42,270 (JAVA CONSTRUCTION LTD based in PL7). To see prices and availability for your job click green button.

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From £38,940

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Trevillion Property Services Ltd

Stephen Trevillion

Member since October 2026

Location

Plymouth, PL6

Minor and major building works

From £34,260

Last active Oct 26
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PLATINUM CONSTRUCTION

Gary Ede

Location

Plymouth, PL7

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

PLATINUM CONSTRUCTION provides a local, trusted extensio...

From £34,260

Last active Oct 26
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Kiwi Construction

Patrick Rule

Location

Plymouth, PL5

Trading since 1997 kitchens,bathrooms lofts patios roof work and much more

From £31,650

Last active Sep 26
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Donovan Construction

Matthew Donovan

Location

Plymouth, PL6

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

Donovan Construction provides a local, trusted extensio...

From £42,270

Last active Sep 26
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JAVA CONSTRUCTION LTD

Luis Escrig

Location

Plymouth, PL7

Java construction 

provide a complete building service and design

we also provide building maitanance 

w...

From £34,890

Last active Sep 26
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NCN Building & Maintenance Ltd

Location

Plymouth, PL2

Need an Extension Builder in Plymouth? NCN Building & Maintenance Ltd has been helping local clients (20 mile radius) with their extension builderi...

From £37,680

Last active Aug 26
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Bob Jones Installations

Rob Jones

Location

Plymouth, PL1

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

From £38,760

Last active Jul 26
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GD ANDREW BUILDING CONTRACTORS

Relax... you have found a reliable extension builder in Plymouth. GD ANDREW BUILDING CONTRACTORS is a friendly and reliable company based in Plymou...

From £36,150

Last active Jul 26
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M D C Building Services

Location

Plymouth, PL3

Relax... you have found a reliable extension builder in Plymouth. M D C Building Services is a friendly and reliable company based in Plymouth who ...

From £33,720

Last active Mar 26
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MJR Construction SW Ltd

Location

Plymouth, PL6

Relax... you have found a reliable extension builder in Plymouth. MJR Construction SW Ltd is a friendly and reliable company based in Plymouth who ...

Cheapest builders to convert your basement in Plymouth

Estimates for convert a basement near Plymouth

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 Plymouth by posting a job with HaMuch and we will send it to  extension builders in Plymouth.


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Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Convert A Basement near Plymouth£30£230
Convert A Basement near Paignton£27£222
Convert A Basement near Newton Abbot£27£236
Convert A Basement near Teignbridge£27£260
Convert A Basement near Torbay£27£223
Convert A Basement near Torquay£28£223
Convert A Basement near St Austell£38£245
Convert A Basement near Exeter£27£221

Estimates for common extension builder jobs in Plymouth;

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...