Range from the cheapest single storey extension £46800 (Britbuild Direct based in IG6) to the dearest single storey extension £50000 (Sheridan Builders based in IG1).
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 Gants Hill by posting a job with HaMuch and we will send it to extension builders in Gants Hill.
Job | Estimate |
Underpinning a house | £17386 |
Build a two storey extension | £87829 |
Build a timber frame extension | £25886 |
Install a swimming pool | £80886 |
Cost to build a single storey extension | £47715 |
Cost to build a side return extension | £36215 |
Install an RSJ | £2086 |
Build an outbuilding | £9886 |
Build a mansard loft conversion | £51886 |
Cost of a loft conversion | £32679 |
Build a kitchen extension | £41886 |
Build a hip to gable loft conversion | £41886 |
Build a granny annexe | £86886 |
Build a garden office | £9886 |
Convert a garage | £15886 |
Build a new garage | £18386 |
Build a flat roof extension | £21886 |
Build a dormer loft conversion | £41886 |
Lay a concrete foundation | £6136 |
Convert a bungalow loft | £28886 |
Basement conversion cost | £36215 |