From £21,520
Relax... you have found a reliable extension builder in United Kingdom. M & K BUILDERS KESWICK LIMITED is a friendly and reliable company based in ...

A flat roof extension ranges from the cheapest of £21,520 (M & K BUILDERS KESWICK LIMITED based in CA12) to the dearest of £21,520 (M & K BUILDERS KESWICK LIMITED based in CA12), 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 United Kingdom by posting a job with HaMuch. We'll send it to extension builders in United Kingdom.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Whitehaven | £22 | £221 |
| Build A Flat Roof Extension near Carlisle | £24 | £203 |
| Build A Flat Roof Extension near Dumfries | £20 | £164 |
| Build A Flat Roof Extension near Dumfries & Galloway | £20 | £164 |
| Build A Flat Roof Extension near Kendal | £28 | £236 |
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 - £17,020

Two storey extension - £87,280

Build a timber frame extension - £25,520

Build a swimming pool - £80,520

Single storey extension - £45,400

Side return extension - £36,100

Install an RSJ - £1,720

Outbuilding - £9,520

Build a Mansard loft conversion - £51,520

Loft conversion - £29,250

Build a kitchen extension - £41,520

Hip to gable loft conversion - £41,520

Granny annexe - £86,520

Garden office - £9,520

Convert a Garage - £15,520

Garage - £18,020

Build a flat roof extension - £21,520

Build a dormer loft conversion - £41,520

Concrete foundations - £5,770

Convert a bungalow loft - £28,520

Convert a basement - £32,100