Need to find an Extension Builder near you for all your extension buildering work?
WILSONS BUILDERS CO LTD provides a local, trusted extens...
Stag Design & Build is the ultimate package for your Extension, New Build, Renovations and all other aspects involving the construction industry, d...
Need to find an Extension Builder near you for all your extension buildering work?
M J LLEWLLYN BUILDING SERVICES provides a local, trusted...
Experienced extension builder ready to quote for your work. G & J BUILDING MAINTENANCE is the best extension builder in Berkeley. No obligation fre...
From £52,008
Gastropod Services is an established and experienced local extension builder in Berkeley. Please contact us for a free, no obligation quote and com...
From £51,840
MI Works Cotswolds Ltd are here to help customers who need an Extension Builder in Berkeley. We offer a competitive rate to complete all your exten...
From £51,696
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £51,864
Need an Extension Builder in Berkeley? Milliner Construction has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £52,496
James Davis
J D Plant Groundwork is a well established construction company providing value-added engineering, construction and service skills to customers for...

Mansard loft conversions range from the cheapest installation of £51,696 (J R BUILDING LTD based in GL2) to the dearest of around £52,496 (JD PLANT GRDWRK SPECIALIST LTD based in GL14).
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 Berkeley by posting a job with HaMuch and we'll send it to extension builders in Berkeley.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near Yate | £34 | £263 |
| Build A Mansard Loft Conversion near Stroud | £33 | £249 |
| Build A Mansard Loft Conversion near Bradley Stoke | £34 | £259 |
| Build A Mansard Loft Conversion near South Gloucestershire | £34 | £260 |
| Build A Mansard Loft Conversion near Quedgeley | £32 | £247 |
| Build A Mansard Loft Conversion near Gloucester | £31 | £236 |
| Build A Mansard Loft Conversion near Kingswood | £34 | £257 |
| Build A Mansard Loft Conversion near Bristol | £33 | £255 |
| Build A Mansard Loft Conversion near Clifton | £33 | £255 |
| Build A Mansard Loft Conversion near Chippenham | £34 | £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 - £17,500

Two storey extension - £88,000

Build a timber frame extension - £26,000

Build a swimming pool - £81,000

Single storey extension - £55,000

Side return extension - £41,500

Install an RSJ - £2,200

Outbuilding - £10,000

Build a Mansard loft conversion - £52,000

Loft conversion - £33,750

Build a kitchen extension - £42,000

Hip to gable loft conversion - £42,000

Granny annexe - £87,000

Garden office - £10,000

Convert a Garage - £16,000

Garage - £18,500

Build a flat roof extension - £22,000

Build a dormer loft conversion - £42,000

Concrete foundations - £6,250

Convert a bungalow loft - £29,000

Convert a basement - £37,500