Add an outbuilding to your property in West Sussex from £9,744

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 £10,120

Last active Nov 26
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C C OLEARY CONSTRUCTION

Experienced extension builder ready to quote for your work. C C OLEARY CONSTRUCTION is the best extension builder in West Sussex. No obligation fre...

From £10,200

Last active Nov 26
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Alan Pacy Builder

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

From £9,880

Last active Nov 26
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Stretch My Home Ltd

Trusted and professional extension builder in West Sussex. Experienced in all extension buildering work and keeping within budget and on quote. Str...

From £9,776

Last active Nov 26
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M Wesley General Builder & Property Maintenance

M Wesley General Builder & Property Maintenance is a trusted extension builder serving customers in West Sussex and the surrounding area. Contact u...

From £9,984

Last active Oct 26
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FIRST FORMAT BUILDING

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

FIRST FORMAT BUILDING provides a local, trusted extensio...

From £9,992

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H P Building Services Sussex

Member since August 2026

H P Building Services Sussex is a one-stop solution for all your extension buildering needs. Establish over 10 years ago and covering 20 miles arou...

From £10,112

Last active Sep 26
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Haynes & Scott Developments

Relax... you have found a reliable extension builder in West Sussex. Haynes & Scott Developments is a friendly and reliable company based in West S...

From £9,776

Last active Jun 26
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S J Peace Building Contractor

Trusted and professional extension builder in West Sussex. Experienced in all extension buildering work and keeping within budget and on quote. S J...

From £9,744

Last active Jun 26
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ONE BUILD

Relax... you have found a reliable extension builder in West Sussex. ONE BUILD is a friendly and reliable company based in West Sussex who consider...

From £9,936

Last active May 26
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ACF Carpentry Ltd

ACF Carpentry Ltd is an established and experienced local extension builder in West Sussex. Please contact us for a free, no obligation quote and c...

Outbuilding cost in West Sussex

Estimates for outbuilding near West Sussex

Outbuilding costs in West Sussex range from the cheapest of £9,744 (ONE BUILD based in BN17) to the dearest of £10,200 (Alan Pacy Builder based in BN12), 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 West Sussex by posting a job with HaMuch and we will send it to extension builders.


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Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Outbuilding near Worthing£35£249
Outbuilding near Lancing£36£249
Outbuilding near Shoreham-by-Sea£36£250
Outbuilding near Rustington£35£242
Outbuilding near Littlehampton£35£241
Outbuilding near Arun£35£241
Outbuilding near Brighton£35£253
Outbuilding near Brighton and Hove£35£252
Outbuilding near Bognor Regis£35£247
Outbuilding near Burgess Hill£36£256

Estimates for common extension builder jobs in West Sussex;

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...