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Relax... you have found a reliable extension builder in Thames Ditton. GDW Construction is a friendly and reliable company based in Thames Ditton w...
Need to find an Extension Builder near you for all your extension buildering work?
OAK HOUSE BESPOKE BUILDERS provides a local, trusted ext...
Experienced extension builder ready to quote for your work. CW BUILDING SERVICES is the best extension builder in Thames Ditton. No obligation free...
Andy Harris
Andy Harris Construction is an established and experienced local extension builder in Thames Ditton. Please contact us for a free, no obligation qu...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
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...
Need to find an Extension Builder near you for all your extension buildering work?
Slick Construction Ltd provides a local, trusted extensi...
Building Vision London Ltd is a trusted extension builder serving customers in Thames Ditton and the surrounding area. Contact us to today to get a...
Red Box are a Fulham-based building and decorating business who work in West and Southwest London, and who specialise in fine interior renovations,...

A flat roof extension ranges from the cheapest of £22,160 (AVIB City Construction Ltd based in SW19) to the dearest of £22,800 (GDW Construction based in SM3), 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 Thames Ditton by posting a job with HaMuch. We'll send it to extension builders in Thames Ditton.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near West Molesey | £43 | £274 |
| Build A Flat Roof Extension near Kingston Upon Thames | £43 | £271 |
| Build A Flat Roof Extension near Richmond Upon Thames | £43 | £274 |
| Build A Flat Roof Extension near Esher | £43 | £274 |
| Build A Flat Roof Extension near Elmbridge | £44 | £278 |
| Build A Flat Roof Extension near Walton-on-Thames | £43 | £277 |
| Build A Flat Roof Extension near Ewell | £44 | £275 |
| Build A Flat Roof Extension near Sunbury-on-Thames | £43 | £273 |
| Build A Flat Roof Extension near Hounslow | £43 | £272 |
| Build A Flat Roof Extension near Epsom | £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 - £17,867

Two storey extension - £88,551

Build a timber frame extension - £26,367

Build a swimming pool - £81,367

Single storey extension - £62,344

Side return extension - £45,631

Install an RSJ - £2,567

Outbuilding - £10,367

Build a Mansard loft conversion - £52,367

Loft conversion - £37,193

Build a kitchen extension - £42,367

Hip to gable loft conversion - £42,367

Granny annexe - £87,367

Garden office - £10,367

Convert a Garage - £16,367

Garage - £18,867

Build a flat roof extension - £22,367

Build a dormer loft conversion - £42,367

Concrete foundations - £6,617

Convert a bungalow loft - £29,367

Convert a basement - £41,631