Range from the cheapest single storey extension £29200 (Peter Borowski based in LA3) to the dearest single storey extension £50000 (MIKE CROWE BUILDING & CONSTRUC based in LA12).
Comparing extension builders estimates for fitting a downstairs toilet 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 - Get rates and quotes to build a single storey extension in Lancaster by posting a job with HaMuch and we will send it to extension builders in Lancaster.
Job | Estimate |
Underpinning a house | £16993 |
Build a two storey extension | £87240 |
Build a timber frame extension | £25493 |
Install a swimming pool | £80493 |
Cost to build a single storey extension | £39869 |
Cost to build a side return extension | £31801 |
Install an RSJ | £1693 |
Build an outbuilding | £9493 |
Build a mansard loft conversion | £51493 |
Cost of a loft conversion | £29001 |
Build a kitchen extension | £41493 |
Build a hip to gable loft conversion | £41493 |
Build a granny annexe | £86493 |
Build a garden office | £9493 |
Convert a garage | £15493 |
Build a flat roof extension | £21493 |
Build a dormer loft conversion | £41493 |
Lay a concrete foundation | £5743 |
Convert a bungalow loft | £28493 |
Basement conversion cost | £31801 |