Add an outbuilding to your property in Thornton Heath from £9,984

Outbuildings are the perfect way to add extra space to your property when you need a bit of quiet from the main house. Whether it's for a garden office, gym or workshop, an outbuilding can add value to your home and increase your quality of life. To see prices and availability for your job click green button.

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From £10,048

Rates verified Sep 26
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J&J Building Solutions

Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Thornton Heath. No obligation f...

From £10,192

Last active Nov 26
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Gb construction

Gani Bush

Gb construction are here to help customers who need an Extension Builder in Thornton Heath. We offer a competitive rate to complete all your exten...

From £10,144

Last active Nov 26
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Greens Gardening & Landscape Property Maintenance

John Mcdonagh

Watch our short video highlighting all our expertise and services here:

more than 10 y...

From £11,200

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Banga Decoration

Sebastian Banga

Member since August 2025

Banga decoration. Is Base in south London  for number of year  Banga decoration is a small  company. Wich provide an excellent job to the custom...

From £11,024

Last active Oct 26
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Buci builders ltd

Robert Buci

Buci builders ltd is a trusted extension builder serving customers in Thornton Heath and the surrounding area. Contact us to today to get a competi...

From £9,984

Last active Oct 26

2 reviews

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RCB Group Design & Build

Vasi J

No Call out charges! 

All Jobs Fully Insured and Guaranteed !!!

All aspects of Plumbing, Heating and Drains....

...

"I am very pleased with the work carried out. All very clear and transparent." - ROMFORD,reviewed 10/01/18, KELLY

From £10,040

Last active Oct 26
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PW Construction & Renovation Ltd

PW Construction & Renovation Ltd is a trusted extension builder serving customers in Thornton Heath and the surrounding area. Contact us to today t...

From £10,344

Last active Oct 26
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Glenn Miller Builders Limited

Glenn Miller

Relax... you have found a reliable extension builder in Thornton Heath. Glenn Miller Builders Limited is a friendly and reliable company based in T...

From £10,336

Last active Sep 26
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PRM BUILDING

Relax... you have found a reliable extension builder in Thornton Heath. PRM BUILDING is a friendly and reliable company based in Thornton Heath who...

From £10,320

Last active Sep 26
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QSA Builders Ltd

QSA Builders Ltd are here to help customers who need an Extension Builder in Thornton Heath. We offer a competitive rate to complete all your exten...

Outbuilding cost in Thornton Heath

Estimates for outbuilding near Thornton Heath

Outbuilding costs in Thornton Heath range from the cheapest of £9,984 (RCB Group Design & Build based in SE21) to the dearest of £11,200 (Banga Decoration based in CR7), but these are just estimates.

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

Get rates and quotes to build an outbuilding in Thornton Heath by posting a job with HaMuch and we will send it to extension builders.

"Build an outbuilding" - SOUTH NORWOOD, job posted 03/02/25


Estimates for common extension builder jobs in Thornton Heath;

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...