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Relax... you have found a reliable extension builder in Whyteleafe. GDW Construction is a friendly and reliable company based in Whyteleafe who con...
From £53,200
Sebastian Banga
Member since August 2025
Banga decoration. Is Base in south London for number of year Banga decoration is a small company. Wich provide an excellent job to the custom...
Arthur Cooper
Experienced extension builder ready to quote for your work. J Cooper Roofing is the best extension builder in Whyteleafe. No obligation free quotes...
Gani Bush
Gb construction are here to help customers who need an Extension Builder in Whyteleafe. We offer a competitive rate to complete all your extension...
BENCHMARK BUILDING & is a trusted extension builder serving customers in Whyteleafe and the surrounding area. Contact us to today to get a competit...
Relax... you have found a reliable extension builder in Whyteleafe. D & R Roofing & Loft Conversions, Building & Design is a friendly and reliable ...
Hilton building contractors ltd is a trusted extension builder serving customers in Whyteleafe and the surrounding area. Contact us to today to get...
Relax... you have found a reliable extension builder in Whyteleafe. Amazing Space Design and Build Ltd. is a friendly and reliable company based in...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Mansard loft conversions range from the cheapest installation of £51,936 (Masters Property Services based in SM5) to the dearest of around £53,200 (Banga Decoration based in CR7).
While these estimates give you a good idea how much you'll pay for a mansard loft conversion, the only way to get an accurate price is to get real quotes from real builders.
Get quotes to install a mansard loft conversion in Whyteleafe by posting a job with HaMuch and we'll send it to extension builders in Whyteleafe.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near Caterham | £43 | £271 |
| Build A Mansard Loft Conversion near Redhill | £41 | £269 |
| Build A Mansard Loft Conversion near Reigate & Banstead | £41 | £271 |
| Build A Mansard Loft Conversion near Croydon | £42 | £267 |
| Build A Mansard Loft Conversion near Reigate | £40 | £270 |
| Build A Mansard Loft Conversion near Tadworth | £41 | £271 |
| Build A Mansard Loft Conversion near Sutton | £43 | £274 |
| Build A Mansard Loft Conversion near Epsom | £44 | £275 |
| Build A Mansard Loft Conversion near Ewell | £44 | £275 |
| Build A Mansard Loft Conversion near Horley | £38 | £258 |
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 - £17,837

Two storey extension - £88,505

Build a timber frame extension - £26,337

Build a swimming pool - £81,337

Single storey extension - £61,736

Side return extension - £45,289

Install an RSJ - £2,537

Outbuilding - £10,337

Build a Mansard loft conversion - £52,337

Loft conversion - £36,908

Build a kitchen extension - £42,337

Hip to gable loft conversion - £42,337

Granny annexe - £87,337

Garden office - £10,337

Convert a Garage - £16,337

Garage - £18,837

Build a flat roof extension - £22,337

Build a dormer loft conversion - £42,337

Concrete foundations - £6,587

Convert a bungalow loft - £29,337

Convert a basement - £41,289