From £22,088
Need to find an Extension Builder near you for all your extension buildering work?
PSB Builders Ltd provides a local, trusted extension bui...
From £22,040
Mitchell & Co Building & Renovations Ltd is an established extension buildering business in Totteridge. We come highly recommended and provide comp...
From £22,096
Totteridge, HP13
Relax... you have found a reliable extension builder in Totteridge. Building High Wycombe is a friendly and reliable company based in Totteridge wh...
From £22,272
Trusted and professional extension builder in Totteridge. Experienced in all extension buildering work and keeping within budget and on quote. G T ...
From £22,424
Here at S Halls Construction Ltd, we undertake all hard landscaping works. Patios, driveways, fencing and groundworks, we also cover many areas of ...
From £22,400
Lazor Construction Ltd are here to help customers who need an Extension Builder in Totteridge. We offer a competitive rate to complete all your ext...
From £22,088
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,304
Totteridge, HP13
Relax... you have found a reliable extension builder in Totteridge. JAMES BUILDERS is a friendly and reliable company based in Totteridge who consi...
From £22,072
As a full-service provider, we are dedicated to delivering an outstanding fit out experience for all of our customers. With our innovative designs,...
From £21,960
N J Decorating is an established extension buildering business in Totteridge. We come highly recommended and provide competitive quotes for your wo...

A flat roof extension ranges from the cheapest of £21,960 (N J Decorating based in HP15) to the dearest of £22,424 (S Halls Construction Ltd based in HP13), 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 Totteridge by posting a job with HaMuch. We'll send it to extension builders in Totteridge.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near High Wycombe | £39 | £272 |
| Build A Flat Roof Extension near Hazlemere | £40 | £272 |
| Build A Flat Roof Extension near Wycombe | £39 | £271 |
| Build A Flat Roof Extension near Maidenhead | £41 | £273 |
| Build A Flat Roof Extension near Chesham | £42 | £277 |
| Build A Flat Roof Extension near Gerrards Cross | £43 | £282 |
| Build A Flat Roof Extension near Slough | £42 | £272 |
| Build A Flat Roof Extension near Rickmansworth | £42 | £278 |
| Build A Flat Roof Extension near Windsor & Maidenhead | £42 | £272 |
| Build A Flat Roof Extension near Berkhamsted | £41 | £263 |
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 - £17,674

Two storey extension - £88,262

Build a timber frame extension - £26,174

Build a swimming pool - £81,174

Single storey extension - £58,488

Side return extension - £43,462

Install an RSJ - £2,374

Outbuilding - £10,174

Build a Mansard loft conversion - £52,174

Loft conversion - £35,385

Build a kitchen extension - £42,174

Hip to gable loft conversion - £42,174

Granny annexe - £87,174

Garden office - £10,174

Convert a Garage - £16,174

Garage - £18,674

Build a flat roof extension - £22,174

Build a dormer loft conversion - £42,174

Concrete foundations - £6,424

Convert a bungalow loft - £29,174

Convert a basement - £39,462