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Select your affordable RH5 extension builder
Garage Door Repairs is an established extension buildering business in RH5. We come highly recommended and provide competitive quotes for your work...
From £21,912
Experienced extension builder ready to quote for your work. Mole Valley Builders is the best extension builder in RH5. No obligation free quotes an...
From £22,168
Established in 2013, Mole Valley Builders is a family-owned, independent building company. Our team shares more than 40 years of industry experienc...
From £22,480
Stovetech Surrey are professional installers of multi-fuel and wood burning stoves.We are OFTEC registered ensuring that all of our work co...
From £22,432
Relax... you have found a reliable extension builder in RH5. Atp Building Services is a friendly and reliable company based in RH5 who consider no ...
From £22,144
Surrey Hills Construction is an established and experienced local extension builder in RH5. Please contact us for a free, no obligation quote and c...
From £22,528
Founded in 2011 by Clive Bordoli and Jim Kelting, we set out to form and lead a team of tradesmen who could share our work ethic and attention to d...
From £22,488
Our family-run building services company JGP Plastering & Brickwork Ltd was established in 2006. Since then we have been helping customers in Surre...

A flat roof extension ranges from the cheapest of £21,912 (Mole Valley Builders based in RH5) to the dearest of £22,528 (Surrey Hills Construction based in RH5), 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 RH5 by posting a job with HaMuch. We'll send it to extension builders in RH5.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Great Bookham | £42 | £281 |
| Build A Flat Roof Extension near Reigate | £40 | £270 |
| Build A Flat Roof Extension near Tadworth | £41 | £271 |
| Build A Flat Roof Extension near Horley | £38 | £258 |
| Build A Flat Roof Extension near Redhill | £41 | £269 |
| Build A Flat Roof Extension near Reigate & Banstead | £41 | £271 |
| Build A Flat Roof Extension near Epsom | £44 | £275 |
| Build A Flat Roof Extension near Horsham | £38 | £265 |
| Build A Flat Roof Extension near Crawley | £38 | £255 |
| Build A Flat Roof Extension near Guildford | £53 | £298 |
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 - £17,792

Two storey extension - £88,437

Build a timber frame extension - £26,292

Build a swimming pool - £81,292

Single storey extension - £60,831

Side return extension - £44,780

Install an RSJ - £2,492

Outbuilding - £10,292

Build a Mansard loft conversion - £52,292

Loft conversion - £36,483

Build a kitchen extension - £42,292

Hip to gable loft conversion - £42,292

Granny annexe - £87,292

Garden office - £10,292

Convert a Garage - £16,292

Garage - £18,792

Build a flat roof extension - £22,292

Build a dormer loft conversion - £42,292

Concrete foundations - £6,542

Convert a bungalow loft - £29,292

Convert a basement - £40,780