We send your job to ALL SO18 extension builders
Available extension builders in SO18 reply
Select your affordable SO18 extension builder
Need to find an Extension Builder near you for all your extension buildering work?
Mobile Services provides a local, trusted extension buil...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
ROB DINE CONSTRUCTION is an established and experienced local extension builder in SO18. Please contact us for a free, no obligation quote and comp...
Trusted and professional extension builder in SO18. Experienced in all extension buildering work and keeping within budget and on quote. Andy's Bui...
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...
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...
Experienced extension builder ready to quote for your work. CSY Construction Ltd is the best extension builder in SO18. No obligation free quotes a...
Need an Extension Builder in SO18? T & S Construction has been helping local clients (20 mile radius) with their extension buildering jobs for many...
Experienced extension builder ready to quote for your work. Artisan Builders is the best extension builder in SO18. No obligation free quotes and m...
Relax... you have found a reliable extension builder in SO18. Property Maintenance Repair is a friendly and reliable company based in SO18 who cons...

Outbuilding costs in SO18 range from the cheapest of £9,736 (Property Maintenance Repair based in SO50) to the dearest of £10,192 (AAConcepts based in SO14), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in SO18 by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Southampton | £34 | £243 |
| Outbuilding near Hedge End | £34 | £244 |
| Outbuilding near Eastleigh | £34 | £244 |
| Outbuilding near Chandler's Ford | £34 | £245 |
| Outbuilding near Locks Heath | £33 | £240 |
| Outbuilding near Totton | £34 | £243 |
| Outbuilding near Romsey | £32 | £230 |
| Outbuilding near Fareham | £35 | £250 |
| Outbuilding near Winchester | £39 | £283 |
| Outbuilding 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 - £17,516

Two storey extension - £88,024

Build a timber frame extension - £26,016

Build a swimming pool - £81,016

Single storey extension - £55,320

Side return extension - £41,680

Install an RSJ - £2,216

Outbuilding - £10,016

Build a Mansard loft conversion - £52,016

Loft conversion - £33,900

Build a kitchen extension - £42,016

Hip to gable loft conversion - £42,016

Granny annexe - £87,016

Garden office - £10,016

Convert a Garage - £16,016

Garage - £18,516

Build a flat roof extension - £22,016

Build a dormer loft conversion - £42,016

Concrete foundations - £6,266

Convert a bungalow loft - £29,016

Convert a basement - £37,680