Aerea is a trusted extension builder serving customers in GU12 and the surrounding area. Contact us to today to get a competitive quote for extensi...
Holt Builders Ltd are here to help customers who need an Extension Builder in GU12. We offer a competitive rate to complete all your extension buil...
MARSHELS ROOFING CONTRCTS LTD is a trusted extension builder serving customers in GU12 and the surrounding area. Contact us to today to get a compe...
Experienced extension builder ready to quote for your work. Betsworth Developments is the best extension builder in GU12. No obligation free quotes...
Experienced extension builder ready to quote for your work. ADW Roofing Services is the best extension builder in GU12. No obligation free quotes a...
Need to find an Extension Builder near you for all your extension buildering work?
MPE Brickwork provides a local, trusted extension builde...
Ayling & Sons Roofing Ltd is an established and experienced local extension builder in GU12. Please contact us for a free, no obligation quote and ...
The Roof Doctor is an established and experienced local extension builder in GU12. Please contact us for a free, no obligation quote and competitiv...
M B Building & Construction Ltd is a trusted extension builder serving customers in GU12 and the surrounding area. Contact us to today to get a com...
Barnabas Zengo
BZ GARDENS specialise in creating and maintaining gardens and outdoor spaces across London, Greater London, Berkshire, Buckinghamshire, Hampshire, ...

A flat roof extension ranges from the cheapest of £21,928 (Holt Builders Ltd based in GU12) to the dearest of £23,200 (BZ GARDENS based in GU12), 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 GU12 by posting a job with HaMuch. We'll send it to extension builders in GU12.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Ash Vale | £41 | £277 |
| Build A Flat Roof Extension near Aldershot | £41 | £275 |
| Build A Flat Roof Extension near Farnborough | £41 | £272 |
| Build A Flat Roof Extension near Farnham | £41 | £276 |
| Build A Flat Roof Extension near Fleet | £41 | £270 |
| Build A Flat Roof Extension near Camberley | £41 | £282 |
| Build A Flat Roof Extension near Waverley | £68 | £313 |
| Build A Flat Roof Extension near Guildford | £53 | £298 |
| Build A Flat Roof Extension near Sandhurst | £41 | £283 |
| Build A Flat Roof Extension near Woking | £43 | £277 |
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 - £17,823

Two storey extension - £88,485

Build a timber frame extension - £26,323

Build a swimming pool - £81,323

Single storey extension - £61,464

Side return extension - £45,136

Install an RSJ - £2,523

Outbuilding - £10,323

Build a Mansard loft conversion - £52,323

Loft conversion - £36,780

Build a kitchen extension - £42,323

Hip to gable loft conversion - £42,323

Granny annexe - £87,323

Garden office - £10,323

Convert a Garage - £16,323

Garage - £18,823

Build a flat roof extension - £22,323

Build a dormer loft conversion - £42,323

Concrete foundations - £6,573

Convert a bungalow loft - £29,323

Convert a basement - £41,136