Build additional living space on your property in Shoreham-by-sea

A granny annexe is the ideal solution for offering a young family member their own space in your home while they save up for their own house, or to help an older relative have some independence while keeping them at a safe distance. But how much do they cost to build in Shoreham-by-sea? To see prices and availability for your job click green button.

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From £87,800

Rates updated Oct 26
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RA Construction

Ricky Alexander

Trusted and professional extension builder in Shoreham-by-sea. Experienced in all extension buildering work and keeping within budget and on quote....

From £87,024

Rates verified Oct 26
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Ferguson Building Services Limited

Ferguson Building Services Limited is an established and experienced local extension builder in Shoreham-by-sea. Please contact us for a free, no o...

From £86,768

Last active Nov 26
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Graeme Davies Plumbing and Heating

Graeme Davies

Experienced extension builder ready to quote for your work. Graeme Davies Plumbing and Heating is the best extension builder in Shoreham-by-sea. No...

From £86,984

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 £87,176

Last active Oct 26
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East West Refurbishment Limited

Need an Extension Builder in Shoreham-by-sea? East West Refurbishment Limited has been helping local clients (20 mile radius) with their extension ...

From £86,840

Last active Oct 26
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SIX STUDI? DESIGN

The studio is based on our founder's vision in concept and interior design, Fabio Lauro has long been in the business of creating atmospheres. His ...

From £86,992

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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 £87,296

Last active Oct 26
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Proper Copper Design

Proper Copper DesignWe are a design lead copper homeware company specializing in contemporary handles, taps, showers and accessories. Our products ...

From £86,992

Last active Oct 26
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Brighton Marina Hand Car Wash

Experienced extension builder ready to quote for your work. Brighton Marina Hand Car Wash is the best extension builder in Shoreham-by-sea. No obli...

From £87,016

Last active Sep 26
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Good Construction (Sussex) Limited

Trusted and professional extension builder in Shoreham-by-sea. Experienced in all extension buildering work and keeping within budget and on quote....

Granny Annexe Cost in Shoreham-by-sea

Estimates for granny annexe near Shoreham-by-sea

Building a granny annexe ranges from £86,768 (Graeme Davies Plumbing and Heating based in BN3) to £87,800 (RA Construction based in BN2), but these are just estimates that can help give you an idea of who will be better value in your area.

The best thing to do is to get quotes to build a granny annexe in Shoreham-by-sea by posting a job with HaMuch. We will send it to extension builders in Shoreham-by-sea who will be happy to help you.


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Estimates for common extension builder jobs in Shoreham-by-sea;

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...