Range from the cheapest single storey extension £38640 (G Wager Building Maintenance based in SA13) to the dearest single storey extension £41680 (3 B's based in SA2).
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 Tonna by posting a job with HaMuch and we will send it to extension builders in Tonna.
25/05/2024
Single storey upper extension build on top of original kitchen extension small terrace house. Next door neighbour already has one similar
Job | Estimate |
Underpinning a house | £17040 |
Build a two storey extension | £87311 |
Build a timber frame extension | £25540 |
Install a swimming pool | £80540 |
Cost to build a single storey extension | £40810 |
Cost to build a side return extension | £32330 |
Install an RSJ | £1740 |
Build an outbuilding | £9540 |
Build a mansard loft conversion | £51540 |
Cost of a loft conversion | £29442 |
Build a kitchen extension | £41540 |
Build a hip to gable loft conversion | £41540 |
Build a granny annexe | £86540 |
Build a garden office | £9540 |
Convert a garage | £15540 |
Build a new garage | £18040 |
Build a flat roof extension | £21540 |
Build a dormer loft conversion | £41540 |
Lay a concrete foundation | £5790 |
Convert a bungalow loft | £28540 |
Basement conversion cost | £32330 |