From £21,536
4D BUILDERS LTD are here to help customers who need an Extension Builder in CT14. We offer a competitive rate to complete all your e...
From £21,824
Relax... you have found a reliable extension builder in CT14. Cosbuild and Maintenance ltd is a friendly and reliable company based in CT14 who con...
From £21,368
Need to find an Extension Builder near you for all your extension buildering work?
A-Pex Building provides a local, trusted extension build...
From £21,656
John Nicoll trained as a joiner and carpenter in St Andrew's, Fife. For over 30 years, he has been operating in the London area - setting up 5 Ways...
From £21,440
We been for almost 15 years in the building trade,
we are easy going and willing to work with our client and to archive the best r...
From £21,504
Christian Builders Margate Ltd is an established and experienced local extension builder in CT14. Please contact us for a free, no obligation quote...
From £21,824
Christian Builders Margate Ltd is a multi-service company founded by Nick Christian. We operate with a highly skilled team of designers, tradesmen,...
From £21,600
Relax... you have found a reliable extension builder in CT14. Paragon Stone Design is a friendly and reliable company based in CT14 who consider no...
From £21,632
Design – our highly experienced design team can help you visualise your dream outcomes, working sympathetically with your space to find the perfe...
From £21,744
Need to find an Extension Builder near you for all your extension buildering work?
Bespoke building projects provides a local, trusted exte...

A flat roof extension ranges from the cheapest of £21,368 (A-Pex Building based in CT17) to the dearest of £21,824 (Cosbuild and Maintenance ltd based in CT17), 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 CT14 by posting a job with HaMuch. We'll send it to extension builders in CT14.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Deal | £26 | £199 |
| Build A Flat Roof Extension near Dover | £29 | £226 |
| Build A Flat Roof Extension near Margate | £27 | £208 |
| Build A Flat Roof Extension near Ramsgate | £27 | £208 |
| Build A Flat Roof Extension near Thanet | £27 | £207 |
| Build A Flat Roof Extension near Broadstairs | £27 | £208 |
| Build A Flat Roof Extension near Folkestone | £31 | £233 |
| Build A Flat Roof Extension near Canterbury | £31 | £232 |
| Build A Flat Roof Extension near Herne Bay | £28 | £213 |
| Build A Flat Roof Extension near Hythe | £31 | £228 |
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 - £17,113

Two storey extension - £87,419

Build a timber frame extension - £25,613

Build a swimming pool - £80,613

Single storey extension - £47,256

Side return extension - £37,144

Install an RSJ - £1,813

Outbuilding - £9,613

Build a Mansard loft conversion - £51,613

Loft conversion - £30,120

Build a kitchen extension - £41,613

Hip to gable loft conversion - £41,613

Granny annexe - £86,613

Garden office - £9,613

Convert a Garage - £15,613

Garage - £18,113

Build a flat roof extension - £21,613

Build a dormer loft conversion - £41,613

Concrete foundations - £5,863

Convert a bungalow loft - £28,613

Convert a basement - £33,144