From £21,984
Relax... you have found a reliable extension builder in SP11. Bob Shearer Property Maintenance, Building & Roofing is a friendly and reliable compa...
From £21,896
Relax... you have found a reliable extension builder in SP11. Groundcraft Ltd is a friendly and reliable company based in SP11 who consider no job ...
From £22,072
DMT Construction t/a are here to help customers who need an Extension Builder in SP11. We offer a competitive rate to complete all your extension b...
From £21,752
4Walls Project Management Ltd is an established and experienced local extension builder in SP11. Please contact us for a free, no obligation quote ...
From £22,104
Relax... you have found a reliable extension builder in SP11. Eds Builders is a friendly and reliable company based in SP11 who consider no job as ...
From £22,120
Our building services company Shadow UK Construction Ltd was established in March 2022, but have been providing professional, trustworthy building ...
From £22,168
Trusted and professional extension builder in SP11. Experienced in all extension buildering work and keeping within budget and on quote. Sarsen Ene...
From £22,000
Connie & Bella Industry Ltd is a trusted extension builder serving customers in SP11 and the surrounding area. Contact us to today to get a competi...
From £22,040
Need an Extension Builder in SP11? BARTITIONS DESIGN & BUILD LTD has been helping local clients (20 mile radius) with their extension buildering j...
From £22,032
Hartwood Oak Buildings Ltd. are here to help customers who need an Extension Builder in SP11. We offer a competitive rate to complete all your exte...

A flat roof extension ranges from the cheapest of £21,752 (4Walls Project Management Ltd based in SP10) to the dearest of £22,168 (Sarsen Energy Ltd based in SN8), 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 SP11 by posting a job with HaMuch. We'll send it to extension builders in SP11.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Andover | £40 | £248 |
| Build A Flat Roof Extension near Test Valley | £37 | £261 |
| Build A Flat Roof Extension near Winchester | £37 | £266 |
| Build A Flat Roof Extension near Newbury | £37 | £262 |
| Build A Flat Roof Extension near Basingstoke & Deane | £39 | £273 |
| Build A Flat Roof Extension near Romsey | £32 | £230 |
| Build A Flat Roof Extension near Salisbury | £35 | £247 |
| Build A Flat Roof Extension near Thatcham | £38 | £266 |
| Build A Flat Roof Extension near Chandler's Ford | £34 | £245 |
| Build A Flat Roof Extension near Basingstoke | £39 | £274 |
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 - £17,517

Two storey extension - £88,025

Build a timber frame extension - £26,017

Build a swimming pool - £81,017

Single storey extension - £55,336

Side return extension - £41,689

Install an RSJ - £2,217

Outbuilding - £10,017

Build a Mansard loft conversion - £52,017

Loft conversion - £33,908

Build a kitchen extension - £42,017

Hip to gable loft conversion - £42,017

Granny annexe - £87,017

Garden office - £10,017

Convert a Garage - £16,017

Garage - £18,517

Build a flat roof extension - £22,017

Build a dormer loft conversion - £42,017

Concrete foundations - £6,267

Convert a bungalow loft - £29,017

Convert a basement - £37,689