Range from the cheapest single storey extension £34000 (ANDYWORKS & son Ltd based in SO50) to the dearest single storey extension £48400 (A W PAVING LTD based in SO31).
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 Southampton by posting a job with HaMuch and we will send it to extension builders in Southampton.
Job | Estimate |
Underpinning a house | £17211 |
Build a two storey extension | £87567 |
Build a timber frame extension | £25711 |
Install a swimming pool | £80711 |
Cost to build a single storey extension | £44221 |
Cost to build a side return extension | £34249 |
Install an RSJ | £1911 |
Build an outbuilding | £9711 |
Build a mansard loft conversion | £51711 |
Cost of a loft conversion | £31041 |
Build a kitchen extension | £41711 |
Build a hip to gable loft conversion | £41711 |
Build a granny annexe | £86711 |
Build a garden office | £9711 |
Convert a garage | £15711 |
Build a flat roof extension | £21711 |
Build a dormer loft conversion | £41711 |
Lay a concrete foundation | £5961 |
Convert a bungalow loft | £28711 |
Basement conversion cost | £34249 |