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Adam Porter
Dover, CT17
Need to find an Extension Builder near you for all your extension buildering work?
A-Pex Building provides a local, trusted extension build...
Need an Extension Builder in Dover? M LONG T/A MJ BUILDINGS has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £21,824
Relax... you have found a reliable extension builder in Dover. Cosbuild and Maintenance ltd is a friendly and reliable company based in Dover who c...
From £21,536
Dover, CT14
4D BUILDERS LTD are here to help customers who need an Extension Builder in Dover. We offer a competitive rate to complete all your ...

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 Dover by posting a job with HaMuch. We'll send it to extension builders in Dover.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Dover | £29 | £226 |
| Build A Flat Roof Extension near Folkestone | £31 | £233 |
| Build A Flat Roof Extension near Deal | £26 | £199 |
| Build A Flat Roof Extension near Hythe | £31 | £228 |
| Build A Flat Roof Extension near Canterbury | £31 | £232 |
| 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 Herne Bay | £28 | £213 |
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 - £17,116

Two storey extension - £87,424

Build a timber frame extension - £25,616

Build a swimming pool - £80,616

Single storey extension - £47,320

Side return extension - £37,180

Install an RSJ - £1,816

Outbuilding - £9,616

Build a Mansard loft conversion - £51,616

Loft conversion - £30,150

Build a kitchen extension - £41,616

Hip to gable loft conversion - £41,616

Granny annexe - £86,616

Garden office - £9,616

Convert a Garage - £15,616

Garage - £18,116

Build a flat roof extension - £21,616

Build a dormer loft conversion - £41,616

Concrete foundations - £5,866

Convert a bungalow loft - £28,616

Convert a basement - £33,180