Benjamin Belsey
Arkson builders ltd is an established and experienced local extension builder in SP2. Please contact us for a free, no obligation quote and competi...
From £22,152
Need an Extension Builder in SP2? Moores Build has been helping local clients (20 mile radius) with their extension buildering jobs for many years....
From £21,312
Noel Higginson
NHBC takes great pride in what it does with a very high attention to detail

A flat roof extension ranges from the cheapest of £21,312 (NHBC based in SP2) to the dearest of £22,152 (Moores Build based in SP1), 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 SP2 by posting a job with HaMuch. We'll send it to extension builders in SP2.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Salisbury | £35 | £247 |
| Build A Flat Roof Extension near Test Valley | £37 | £261 |
| Build A Flat Roof Extension near Romsey | £32 | £230 |
| Build A Flat Roof Extension near New Forest | £32 | £245 |
| Build A Flat Roof Extension near Andover | £40 | £248 |
| Build A Flat Roof Extension near Totton | £34 | £243 |
| Build A Flat Roof Extension near Devizes | £32 | £242 |
| Build A Flat Roof Extension near Chandler's Ford | £34 | £245 |
| Build A Flat Roof Extension near West Wiltshire | £32 | £242 |
| Build A Flat Roof Extension near North Wiltshire | £32 | £242 |
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 - £17,367

Two storey extension - £87,800

Build a timber frame extension - £25,867

Build a swimming pool - £80,867

Single storey extension - £52,333

Side return extension - £40,000

Install an RSJ - £2,067

Outbuilding - £9,867

Build a Mansard loft conversion - £51,867

Loft conversion - £32,500

Build a kitchen extension - £41,867

Hip to gable loft conversion - £41,867

Granny annexe - £86,867

Garden office - £9,867

Convert a Garage - £15,867

Garage - £18,367

Build a flat roof extension - £21,867

Build a dormer loft conversion - £41,867

Concrete foundations - £6,117

Convert a bungalow loft - £28,867

Convert a basement - £36,000