From £19,596
We are a Small Family run business with over 30 years experience in the building trade, Carpentry is my main trade, with NVQ Level 2.
From £18,644
We are a small family run business with over 20 years experience in brickwork, bathroom/kitchen fitting, roofing, landscaping, fencing, tiling and ...
From £18,252
Park Building Services Ltd is a trusted extension builder serving customers in SO18 and the surrounding area. Contact us to today to get a competit...
From £18,268
TP Developments are here to help customers who need an Extension Builder in SO18. We offer a competitive rate to complete all your extension builde...
From £18,644
Bailey Construction Services are here to help customers who need an Extension Builder in SO18. We offer a competitive rate to complete all your ext...
From £18,252
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £18,620
Need to find an Extension Builder near you for all your extension buildering work?
Mobile Services provides a local, trusted extension buil...
From £18,692
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 £18,636
Claytons Building and Roofing are here to help customers who need an Extension Builder in SO18. We offer a competitive rate to complete all your ex...
From £18,460
ROB DINE CONSTRUCTION is an established and experienced local extension builder in SO18. Please contact us for a free, no obligation quote and comp...

Builders charge between £18,252 (Park Building Services Ltd based in PO9) and £19,596 (R&B Property Improvements based in PO9) in SO18 to build a garage, but these costs are only estimates.
Comparing extension builders estimates for building a garage gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get real quotes to build a new garage in SO18 by posting a job with HaMuch and we will send it to extension builders in SO18.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garage near Southampton | £34 | £243 |
| Garage near Hedge End | £34 | £244 |
| Garage near Eastleigh | £34 | £244 |
| Garage near Chandler's Ford | £34 | £245 |
| Garage near Locks Heath | £33 | £240 |
| Garage near Totton | £34 | £243 |
| Garage near Romsey | £32 | £230 |
| Garage near Fareham | £35 | £250 |
| Garage near Winchester | £37 | £266 |
| 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 - £17,606

Two storey extension - £88,160

Build a timber frame extension - £26,106

Build a swimming pool - £81,106

Single storey extension - £57,128

Side return extension - £42,697

Install an RSJ - £2,306

Outbuilding - £10,106

Build a Mansard loft conversion - £52,106

Loft conversion - £34,748

Build a kitchen extension - £42,106

Hip to gable loft conversion - £42,106

Granny annexe - £87,106

Garden office - £10,106

Convert a Garage - £16,106

Garage - £18,606

Build a flat roof extension - £22,106

Build a dormer loft conversion - £42,106

Concrete foundations - £6,356

Convert a bungalow loft - £29,106

Convert a basement - £38,697