From £21,776
Relax... you have found a reliable extension builder in St Thomas. R BREWER CONSTRUCTION LTD is a friendly and reliable company based in St Thomas ...
From £21,672
Trusted and professional extension builder in St Thomas. Experienced in all extension buildering work and keeping within budget and on quote. C P C...
From £22,000
Reliable family run business established in 2003. All work previously undertaken has been generated purely through word of mouth and recommendation...
From £21,976
Blake Services is a trusted extension builder serving customers in St Thomas and the surrounding area. Contact us to today to get a competitive quo...
From £21,952
The House Mechanic are here to help customers who need an Extension Builder in St Thomas. We offer a competitive rate to complete all your extensio...
From £21,512
Relax... you have found a reliable extension builder in St Thomas. KARLINE CONSTRUCTION LTD is a friendly and reliable company based in St Thomas w...
From £21,824
Livewest is a trusted extension builder serving customers in St Thomas and the surrounding area. Contact us to today to get a competitive quote for...
From £21,920
Need an Extension Builder in St Thomas? Sales Consultant - LiveWest has been helping local clients (20 mile radius) with their extension buildering...
From £21,632
F8 CONSTRUCTION LIMITED is an established extension buildering business in St Thomas. We come highly recommended and provide competitive quotes for...
From £21,840
Our building services company Kingsleigh Homes Ltd was established in 2019, with over 30 years’ experience in the building trade, providing custo...

A flat roof extension ranges from the cheapest of £21,512 (KARLINE CONSTRUCTION LTD based in EX2) to the dearest of £22,000 (WEBB & SONS (SW) LTD based in EX1), 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 St Thomas by posting a job with HaMuch. We'll send it to extension builders in St Thomas.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Exeter | £27 | £221 |
| Build A Flat Roof Extension near Exmouth | £24 | £210 |
| Build A Flat Roof Extension near Teignbridge | £27 | £260 |
| Build A Flat Roof Extension near East Devon | £27 | £221 |
| Build A Flat Roof Extension near Newton Abbot | £27 | £236 |
| Build A Flat Roof Extension near Tiverton | £25 | £202 |
| Build A Flat Roof Extension near Torquay | £28 | £223 |
| Build A Flat Roof Extension near Paignton | £27 | £222 |
| Build A Flat Roof Extension near Torbay | £27 | £223 |
| Build A Flat Roof Extension near Taunton | £31 | £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 - £17,310

Two storey extension - £87,716

Build a timber frame extension - £25,810

Build a swimming pool - £80,810

Single storey extension - £51,208

Side return extension - £39,367

Install an RSJ - £2,010

Outbuilding - £9,810

Build a Mansard loft conversion - £51,810

Loft conversion - £31,973

Build a kitchen extension - £41,810

Hip to gable loft conversion - £41,810

Granny annexe - £86,810

Garden office - £9,810

Convert a Garage - £15,810

Garage - £18,310

Build a flat roof extension - £21,810

Build a dormer loft conversion - £41,810

Concrete foundations - £6,060

Convert a bungalow loft - £28,810

Convert a basement - £35,367