From £21,840
Need to find an Extension Builder near you for all your extension buildering work?
Brian Fraser Joiners provides a local, trusted extension...

A flat roof extension ranges from the cheapest of £21,840 (Brian Fraser Joiners based in IV30) to the dearest of £21,840 (Brian Fraser Joiners based in IV30), 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 Forres by posting a job with HaMuch. We'll send it to extension builders in Forres.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Elgin | £25 | £200 |
| Build A Flat Roof Extension near Inverness | £19 | £190 |
| Build A Flat Roof Extension near Highland | £19 | £190 |
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 - £17,340

Two storey extension - £87,760

Build a timber frame extension - £25,840

Build a swimming pool - £80,840

Single storey extension - £51,800

Side return extension - £39,700

Install an RSJ - £2,040

Outbuilding - £9,840

Build a Mansard loft conversion - £51,840

Loft conversion - £32,250

Build a kitchen extension - £41,840

Hip to gable loft conversion - £41,840

Granny annexe - £86,840

Garden office - £9,840

Convert a Garage - £15,840

Garage - £18,340

Build a flat roof extension - £21,840

Build a dormer loft conversion - £41,840

Concrete foundations - £6,090

Convert a bungalow loft - £28,840

Convert a basement - £35,700