Range from the cheapest £18 per hour and £150 per day (Ian Groves based in CA12) to the dearest £25 per hour and £250 per day (MIKE CROWE BUILDING & CONSTRUC based in LA12).
Comparing hourly and daily rates of Extension Builder's 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 - Click 'Get quotes' and describe your job and we will send it to your local extension builders for FREE.
See table for all Extension Builder rates in Windermere
| Job details | Estimate |
| Underpinning a house | £1359 |
| Build a two storey extension | £4530 |
| Build a timber frame extension | £4530 |
| Install a swimming pool | £2718 |
| Cost to build a single storey extension | £36237 |
| Cost to build a side return extension | £41673 |
| Install an RSJ | £793 |
| Build an outbuilding | £1812 |
| Build a mansard loft conversion | £9059 |
| Cost of a loft conversion | £25366 |
| Build a kitchen extension | £9059 |
| Build a hip to gable loft conversion | £6795 |
| Build a granny annexe | £4530 |
| Build a garden office | £1812 |
| Convert a garage | £906 |
| Build a new garage | £1812 |
| Build a flat roof extension | £1540 |
| Build a dormer loft conversion | £1812 |
| Lay a concrete foundation | £1812 |
| Convert a bungalow loft | £2718 |
| Basement conversion cost | £25366 |
| Business name | Hourly Rate | Daily Rate |
|---|---|---|
| J R S BUILDING, , LA23 | £22 | £189 |
| SIMPSON CONSTRUCTION, , LA8 | £22 | £189 |
| STEPHEN FELLER (BUILDER), , LA9 | £23 | £196 |
| Absolute Build, Kendal, LA9 | £25 | £200 |
| ROJ.house, Cumbria, LA9 | £25 | £206 |
| SBG CONSTRUCTION LTD, , LA9 | £22 | £193 |
| CHRIS ELLWOOD BUILDING CONTR, , LA9 | £22 | £193 |
| Helmside Building Services, Kendal, LA9 | £22 | £176 |
| Wolfe Design & Build, Cumbria, LA17 | £23 | £192 |
| HOLME BUILDING SERVICES LTD, , LA6 | £22 | £191 |
| MARK TAYLOR CONSTRUCTION LTD, , LA17 | £21 | £181 |
| MIKE CROWE BUILDING & CONSTRUC, , LA12 | £25 | £250 |
| ADAM READ TRADITIONAL BUILDING, , LA18 | £20 | £175 |
| A BAINES, Kirkby Lonsdale, LA6 | £24 | £204 |
| Ian Groves, Penrith , CA12 | £18 | £150 |
| J.MACKIE (BUILDER), , LA18 | £21 | £177 |
| NEWBY BUILDING & CONSTRUCTION, , CA10 | £21 | £177 |
| M & K BUILDERS KESWICK LIMITED, , CA12 | £18 | £164 |
| T P MCNULTY CONSTRUCTION LTD, , LA14 | £20 | £181 |