Range from the cheapest, mostly independent, £15 per hour and £150 per day (A45 Fencing & Landscapes based in B26) to the dearest, normally the best, £45 per hour and £350 per day (G S Electrical based in B66).
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.
Roof don't need to be raided. Dorma at back with side.
Two bedroom and a bathroom dormer loft conversion
I plan to have a lift conversion. Martha 07401405345
We need Extension Builders like you to help local homeowners with their jobs.
| Job details | Estimate |
| Underpinning a house | £1438 |
| Build a two storey extension | £4795 |
| Build a timber frame extension | £4795 |
| Install a swimming pool | £2877 |
| Cost to build a single storey extension | £38360 |
| Cost to build a side return extension | £44113 |
| Install an RSJ | £839 |
| Build an outbuilding | £1918 |
| Build a mansard loft conversion | £9590 |
| Cost of a loft conversion | £26852 |
| Build a kitchen extension | £9590 |
| Build a hip to gable loft conversion | £7192 |
| Build a granny annexe | £4795 |
| Build a garden office | £1918 |
| Convert a garage | £959 |
| Build a new garage | £1918 |
| Build a flat roof extension | £1630 |
| Build a dormer loft conversion | £1918 |
| Lay a concrete foundation | £1918 |
| Convert a bungalow loft | £2877 |
| Basement conversion cost | £26852 |