From £21,864
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

A flat roof extension ranges from the cheapest of £21,864 (QUINN CONSTRUCTION SERVICES (A based in IP25) to the dearest of £21,864 (QUINN CONSTRUCTION SERVICES (A based in IP25), 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 Swaffham by posting a job with HaMuch. We'll send it to extension builders in Swaffham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Breckland | £28 | £248 |
| Build A Flat Roof Extension near Dereham | £25 | £203 |
| Build A Flat Roof Extension near Kings Lynn & West Norfolk | £31 | £238 |
| Build A Flat Roof Extension near King's Lynn | £33 | £254 |
| Build A Flat Roof Extension near Thetford | £42 | £277 |
| Build A Flat Roof Extension near Wisbech | £34 | £255 |
| Build A Flat Roof Extension near Broadland | £24 | £194 |
| Build A Flat Roof Extension near Ely | £40 | £279 |
| Build A Flat Roof Extension near Norwich | £25 | £200 |
| Build A Flat Roof Extension near Bury St Edmunds | £34 | £251 |
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 - £17,364

Two storey extension - £87,796

Build a timber frame extension - £25,864

Build a swimming pool - £80,864

Single storey extension - £52,280

Side return extension - £39,970

Install an RSJ - £2,064

Outbuilding - £9,864

Build a Mansard loft conversion - £51,864

Loft conversion - £32,475

Build a kitchen extension - £41,864

Hip to gable loft conversion - £41,864

Granny annexe - £86,864

Garden office - £9,864

Convert a Garage - £15,864

Garage - £18,364

Build a flat roof extension - £21,864

Build a dormer loft conversion - £41,864

Concrete foundations - £6,114

Convert a bungalow loft - £28,864

Convert a basement - £35,970