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Experienced extension builder ready to quote for your work. ADW Roofing Services is the best extension builder in Guildford. No obligation free quo...
Ayling & Sons Roofing Ltd is an established and experienced local extension builder in Guildford. Please contact us for a free, no obligation quote...
Need to find an Extension Builder near you for all your extension buildering work?
Chim Me Sweep Chim Me Build provides a local, trusted ex...
Relax... you have found a reliable extension builder in Guildford. DILCONSI CONSTRUCTION is a friendly and reliable company based in Guildford who ...
Holt Builders Ltd are here to help customers who need an Extension Builder in Guildford. We offer a competitive rate to complete all your extension...
Experienced extension builder ready to quote for your work. Betsworth Developments is the best extension builder in Guildford. No obligation free q...
Need to find an Extension Builder near you for all your extension buildering work?
MPE Brickwork provides a local, trusted extension builde...
The Roof Doctor is an established and experienced local extension builder in Guildford. Please contact us for a free, no obligation quote and compe...
M B Building & Construction Ltd is a trusted extension builder serving customers in Guildford and the surrounding area. Contact us to today to get ...
ADO Builders is a trusted extension builder serving customers in Guildford and the surrounding area. Contact us to today to get a competitive quote...

A flat roof extension ranges from the cheapest of £21,928 (Holt Builders Ltd based in GU12) to the dearest of £22,400 (The Roof Doctor 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 Guildford by posting a job with HaMuch. We'll send it to extension builders in Guildford.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Guildford | £53 | £298 |
| Build A Flat Roof Extension near Woking | £43 | £277 |
| Build A Flat Roof Extension near Ash Vale | £41 | £277 |
| Build A Flat Roof Extension near Waverley | £68 | £313 |
| Build A Flat Roof Extension near Aldershot | £41 | £275 |
| Build A Flat Roof Extension near Great Bookham | £42 | £281 |
| Build A Flat Roof Extension near Farnborough | £41 | £272 |
| Build A Flat Roof Extension near New Haw | £43 | £273 |
| Build A Flat Roof Extension near Farnham | £41 | £276 |
| Build A Flat Roof Extension near Camberley | £40 | £268 |
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 - £17,630

Two storey extension - £88,194

Build a timber frame extension - £26,130

Build a swimming pool - £81,130

Single storey extension - £57,592

Side return extension - £42,958

Install an RSJ - £2,330

Outbuilding - £10,130

Build a Mansard loft conversion - £52,130

Loft conversion - £34,965

Build a kitchen extension - £42,130

Hip to gable loft conversion - £42,130

Granny annexe - £87,130

Garden office - £10,130

Convert a Garage - £16,130

Garage - £18,630

Build a flat roof extension - £22,130

Build a dormer loft conversion - £42,130

Concrete foundations - £6,380

Convert a bungalow loft - £29,130

Convert a basement - £38,958