Luke Rees
General Building Services (Southampton) Ltd is a trusted extension builder serving customers in SP11 and the surrounding area. Contact us to today ...
Experienced extension builder ready to quote for your work. CSY Construction Ltd is the best extension builder in SP11. No obligation free quotes a...
Jamie Brant
Trusted and professional extension builder in SP11. Experienced in all extension buildering work and keeping within budget and on quote. Brant Buil...
Experienced extension builder ready to quote for your work. Avalon Building Services Ltd is the best extension builder in SP11. No obligation free ...
D W BUILDERS is a trusted extension builder serving customers in SP11 and the surrounding area. Contact us to today to get a competitive quote for ...
Need to find an Extension Builder near you for all your extension buildering work?
M Warwick (Builders) provides a local, trusted extension...
J & M Building Services are here to help customers who need an Extension Builder in SP11. We offer a competitive rate to complete all your extensio...
Relax... you have found a reliable extension builder in SP11. Parkhouse Roofing is a friendly and reliable company based in SP11 who consider no jo...
Experienced extension builder ready to quote for your work. S & M Builders is the best extension builder in SP11. No obligation free quotes and man...
John McKinney Building is an established extension buildering business in SP11. We come highly recommended and provide competitive quotes for your ...

In SP11, prices for dormer loft conversions range from £41,872 (General Building Services (Southampton) Ltd based in SO53) to £42,432 (Brant Builders based in RG26), 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 SP11. Post your job on HaMuch now and we'll put you in touch with available extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Dormer Loft Conversion near Andover | £40 | £248 |
| Build A Dormer Loft Conversion near Test Valley | £37 | £261 |
| Build A Dormer Loft Conversion near Winchester | £37 | £266 |
| Build A Dormer Loft Conversion near Newbury | £37 | £262 |
| Build A Dormer Loft Conversion near Basingstoke & Deane | £39 | £273 |
| Build A Dormer Loft Conversion near Romsey | £32 | £230 |
| Build A Dormer Loft Conversion near Salisbury | £35 | £247 |
| Build A Dormer Loft Conversion near Thatcham | £38 | £266 |
| Build A Dormer Loft Conversion near Chandler's Ford | £34 | £245 |
| Build A Dormer Loft Conversion near Basingstoke | £39 | £274 |
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.

Underpin a building - £17,666

Two storey extension - £88,250

Build a timber frame extension - £26,166

Build a swimming pool - £81,166

Single storey extension - £58,328

Side return extension - £43,372

Install an RSJ - £2,366

Outbuilding - £10,166

Build a Mansard loft conversion - £52,166

Loft conversion - £35,310

Build a kitchen extension - £42,166

Hip to gable loft conversion - £42,166

Granny annexe - £87,166

Garden office - £10,166

Convert a Garage - £16,166

Garage - £18,666

Build a flat roof extension - £22,166

Build a dormer loft conversion - £42,166

Concrete foundations - £6,416

Convert a bungalow loft - £29,166

Convert a basement - £39,372