From £22,328
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,368
Relax... you have found a reliable extension builder in GU3. BUILDING SPACE UK LTD is a friendly and reliable company based in GU3 who consider no ...
From £22,432
Need an Extension Builder in GU3? ZNS Construction has been helping local clients (10 mile radius) with their extension buildering jobs for many ye...
From £21,896
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,152
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,224
Image Design & Consultants is a trusted extension builder serving customers in GU3 and the surrounding area. Contact us to today to get a competiti...
From £22,336
Aerea is a trusted extension builder serving customers in GU3 and the surrounding area. Contact us to today to get a competitive quote for extensio...
From £22,272
Need to find an Extension Builder near you for all your extension buildering work?
DPP Construction (David Price Partnership) provides a lo...
From £22,480
New build, complete refurbishment and renovation service. We provide a quality turnkey service in Central London , South West London

A flat roof extension ranges from the cheapest of £21,896 (Tota Builders based in TW2) to the dearest of £22,480 (Vpbuildesign Ltd based in KT11), 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 GU3 by posting a job with HaMuch. We'll send it to extension builders in GU3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Guildford | £53 | £298 |
| Build A Flat Roof Extension near Ash Vale | £41 | £277 |
| Build A Flat Roof Extension near Woking | £43 | £277 |
| Build A Flat Roof Extension near Aldershot | £41 | £275 |
| Build A Flat Roof Extension near Waverley | £68 | £313 |
| Build A Flat Roof Extension near Farnborough | £41 | £273 |
| Build A Flat Roof Extension near Farnham | £41 | £276 |
| Build A Flat Roof Extension near Camberley | £41 | £283 |
| Build A Flat Roof Extension near Fleet | £41 | £270 |
| Build A Flat Roof Extension near New Haw | £43 | £273 |
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 - £17,789

Two storey extension - £88,433

Build a timber frame extension - £26,289

Build a swimming pool - £81,289

Single storey extension - £60,776

Side return extension - £44,749

Install an RSJ - £2,489

Outbuilding - £10,289

Build a Mansard loft conversion - £52,289

Loft conversion - £36,458

Build a kitchen extension - £42,289

Hip to gable loft conversion - £42,289

Granny annexe - £87,289

Garden office - £10,289

Convert a Garage - £16,289

Garage - £18,789

Build a flat roof extension - £22,289

Build a dormer loft conversion - £42,289

Concrete foundations - £6,539

Convert a bungalow loft - £29,289

Convert a basement - £40,749