From £15,928
Loki Projects & Development specialises in design, construction & project management.
From £16,080
Experienced extension builder ready to quote for your work. Shay building LTD is the best extension builder in Southampton. No obligation free quot...
From £15,968
Trusted and professional extension builder in Southampton. Experienced in all extension buildering work and keeping within budget and on quote. LG ...
From £15,728
Hestia Trustins LTD are here to help customers who need an Extension Builder in Southampton. We offer a competitive rate to complete all your exten...
From £16,192
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 £15,920
Southampton, SO14
Need to find an Extension Builder near you for all your extension buildering work?
DSH Roofing provides a local, trusted extension builderi...
From £15,904
Need to find an Extension Builder near you for all your extension buildering work?
Dell Developments Ltd provides a local, trusted extensio...
From £15,768
Need to find an Extension Builder near you for all your extension buildering work?
Mark Mckie provides a local, trusted extension builderin...
From £16,144
Southampton, SO15
Bailey Construction Services are here to help customers who need an Extension Builder in Southampton. We offer a competitive rate to complete all y...
From £15,968
Trusted and professional extension builder in Southampton. Experienced in all extension buildering work and keeping within budget and on quote. And...

Garage conversions in Southampton typically range from £15,728 (Hestia Trustins LTD based in SO14) to £16,192 (AAConcepts based in SO14), but the only way to get an accurate cost for your specific project is to get quotes.
Post a job with HaMuch and we'll send it to extension builders in Southampton who will be happy to help.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Garage near Southampton | £34 | £243 |
| Convert A Garage near Eastleigh | £34 | £244 |
| Convert A Garage near Totton | £34 | £243 |
| Convert A Garage near Hedge End | £34 | £244 |
| Convert A Garage near Chandler's Ford | £34 | £245 |
| Convert A Garage near Locks Heath | £33 | £240 |
| Convert A Garage near Romsey | £32 | £230 |
| Convert A Garage near New Forest | £32 | £245 |
| Convert A Garage near Fareham | £35 | £250 |
| Convert A Garage near Lee-on-the-Solent | £35 | £249 |
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 - £17,460

Two storey extension - £87,940

Build a timber frame extension - £25,960

Build a swimming pool - £80,960

Single storey extension - £54,200

Side return extension - £41,050

Install an RSJ - £2,160

Outbuilding - £9,960

Build a Mansard loft conversion - £51,960

Loft conversion - £33,375

Build a kitchen extension - £41,960

Hip to gable loft conversion - £41,960

Granny annexe - £86,960

Garden office - £9,960

Convert a Garage - £15,960

Garage - £18,460

Build a flat roof extension - £21,960

Build a dormer loft conversion - £41,960

Concrete foundations - £6,210

Convert a bungalow loft - £28,960

Convert a basement - £37,050