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Select your affordable SO14 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 SO14. Please contact us for a free, no obligation quote and comp...
Trusted and professional extension builder in SO14. 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 SO14. We offer a competitive rate to complete all your ex...
Need an Extension Builder in SO14? T & S Construction has been helping local clients (20 mile radius) with their extension buildering jobs for many...
Shy Browm
Experienced extension builder ready to quote for your work. Shay building LTD is the best extension builder in SO14. No obligation free quotes and ...
From £22,640
Scott Shrimpton
Need an Extension Builder in SO14? LED Electrical Services has been helping local clients (20 mile radius) with their extension buildering jobs for...
From £21,968
Trusted and professional extension builder in SO14. Experienced in all extension buildering work and keeping within budget and on quote. LG PLANNIN...

A flat roof extension ranges from the cheapest of £21,752 (Steve Lovett Builders based in SO18) to the dearest of £22,640 (LED Electrical Services based in SO18), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in SO14 by posting a job with HaMuch. We'll send it to extension builders in SO14.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Southampton | £34 | £243 |
| Build A Flat Roof Extension near Hedge End | £34 | £244 |
| Build A Flat Roof Extension near Eastleigh | £34 | £244 |
| Build A Flat Roof Extension near Totton | £34 | £243 |
| Build A Flat Roof Extension near Locks Heath | £33 | £240 |
| Build A Flat Roof Extension near Chandler's Ford | £34 | £245 |
| Build A Flat Roof Extension near Romsey | £32 | £230 |
| Build A Flat Roof Extension near Fareham | £35 | £250 |
| Build A Flat Roof Extension near New Forest | £32 | £245 |
| Build A Flat Roof Extension 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 - £17,580

Two storey extension - £88,120

Build a timber frame extension - £26,080

Build a swimming pool - £81,080

Single storey extension - £56,600

Side return extension - £42,400

Install an RSJ - £2,280

Outbuilding - £10,080

Build a Mansard loft conversion - £52,080

Loft conversion - £34,500

Build a kitchen extension - £42,080

Hip to gable loft conversion - £42,080

Granny annexe - £87,080

Garden office - £10,080

Convert a Garage - £16,080

Garage - £18,580

Build a flat roof extension - £22,080

Build a dormer loft conversion - £42,080

Concrete foundations - £6,330

Convert a bungalow loft - £29,080

Convert a basement - £38,400