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Need to find an Extension Builder near you for all your extension buildering work?
OAK HOUSE BESPOKE BUILDERS provides a local, trusted ext...
Jatinder Kahlon
Hi, I’m Jatinder. I’m a qualified electrician and gas safe registered professional with 10 years of experience in the trade. We specialise in l...
Russell Worcester
R & R Roofing Guildford are here to help customers who need an Extension Builder in Cobham. We offer a competitive rate to complete all your extens...
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 Cobham. DILCONSI CONSTRUCTION is a friendly and reliable company based in Cobham who consid...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Cosmin-Adrian Aporcariti
We are a company based in South London, with a strong will to work and to do the best job possible every tine we start a job (big or small) because...
Need to find an Extension Builder near you for all your extension buildering work?
GS Wood Building Services provides a local, trusted exte...
David Phelan
Please visit our web site. Www. Dapconstruction. Co . Uk to c all our work and client recommendations.
Need an Extension Builder in Cobham? FLUID CONSTRUCTION has been helping local clients (10 mile radius) with their extension buildering jobs for ma...

Comparing extension builders estimates for Loft conversion gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost of a loft conversion in Cobham by posting your job to extension builders in Cobham.
"Back extension" - KT9, job posted 03/07/26
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Loft Conversion near Elmbridge | £44 | £278 |
| Loft Conversion near Walton-on-Thames | £43 | £277 |
| Loft Conversion near Esher | £43 | £274 |
| Loft Conversion near Great Bookham | £42 | £281 |
| Loft Conversion near New Haw | £43 | £273 |
| Loft Conversion near West Molesey | £43 | £274 |
| Loft Conversion near Sunbury-on-Thames | £43 | £273 |
| Loft Conversion near Epsom | £44 | £275 |
| Loft Conversion near Woking | £43 | £277 |
| Loft Conversion near Ewell | £44 | £275 |
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 - £17,658

Two storey extension - £88,238

Build a timber frame extension - £26,158

Build a swimming pool - £81,158

Single storey extension - £58,168

Side return extension - £43,282

Install an RSJ - £2,358

Outbuilding - £10,158

Build a Mansard loft conversion - £52,158

Loft conversion - £35,235

Build a kitchen extension - £42,158

Hip to gable loft conversion - £42,158

Granny annexe - £87,158

Garden office - £10,158

Convert a Garage - £16,158

Garage - £18,658

Build a flat roof extension - £22,158

Build a dormer loft conversion - £42,158

Concrete foundations - £6,408

Convert a bungalow loft - £29,158

Convert a basement - £39,282