Add extra space to your Southampton home from £41,752

Dormer loft conversions are ideal if you want to add lots of extra space to your home. Adding a box-like structure or structures to the roof, you essentially extend the roofline to add significant square footage to your loft space. This makes dormer loft conversions one of the most popular loft conversion types, as they're ideal for adding a new main bedroom with en-suite or even a self-contained living space. To see prices and availability for your job click green button.

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From £41,968

Last active Nov 26
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Andy's Building Services

Trusted and professional extension builder in Southampton. Experienced in all extension buildering work and keeping within budget and on quote. And...

From £42,192

Last active Oct 26
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AAConcepts

Arshad Ali

We are a Design and Build company based in Hampshire. Proud of our roots, we try to be the very best in the way we go about our business. Friendly...

From £41,960

Last active Oct 26
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ROB DINE CONSTRUCTION

ROB DINE CONSTRUCTION is an established and experienced local extension builder in Southampton. Please contact us for a free, no obligation quote a...

From £42,120

Last active Oct 26
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Mobile Services

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

Mobile Services provides a local, trusted extension buil...

From £42,136

Last active Oct 26
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Claytons Building and Roofing

Location

Southampton, SO19

Claytons Building and Roofing are here to help customers who need an Extension Builder in Southampton. We offer a competitive rate to complete all ...

From £41,752

Last active Oct 26
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Steve Lovett Builders

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

From £41,872

Last active Oct 26
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General Building Services (Southampton) Ltd

Luke Rees

General Building Services (Southampton) Ltd is a trusted extension builder serving customers in Southampton and the surrounding area. Contact us to...

From £42,176

Last active Oct 26
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CSY Construction Ltd

Experienced extension builder ready to quote for your work. CSY Construction Ltd is the best extension builder in Southampton. No obligation free q...

From £42,192

Last active Sep 26
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A W PAVING LTD

Anthony Withey

Location

Southampton, SO31

Trusted and professional extension builder in Southampton. Experienced in all extension buildering work and keeping within budget and on quote. A W...

From £42,040

Last active Jul 26
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Grant Construction

Experienced extension builder ready to quote for your work. Grant Construction is the best extension builder in Southampton. No obligation free quo...

Cost of dormer loft conversions in Southampton

Estimates for build a dormer loft conversion near Southampton

In Southampton, prices for dormer loft conversions range from £41,752 (Steve Lovett Builders based in SO18) to £42,192 (AAConcepts based in SO14), but how much your conversion costs will vary depending on the size of your property, how easy access to your roof is and what you want to use the space for. 

The best way to get an accurate price is to compare quotes from extension builders in Southampton. Post your job on HaMuch now and we'll put you in touch with available extension builders.

"Dormer loft conversion" - EASTLEIGH, job posted 04/11/26


Estimates for common extension builder jobs in Southampton;

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.

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