Range from the cheapest single storey extension £13200 (London Design And Build based in SW1A) to the dearest single storey extension £48880 (ALT CONSTRUCTION based in SW1W).
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 Belgravia by posting a job with HaMuch and we will send it to extension builders in Belgravia.
Job | Estimate |
Underpinning a house | £17313 |
Build a two storey extension | £87720 |
Build a timber frame extension | £25813 |
Install a swimming pool | £80813 |
Cost to build a single storey extension | £46262 |
Cost to build a side return extension | £35398 |
Install an RSJ | £2013 |
Build an outbuilding | £9813 |
Build a mansard loft conversion | £51813 |
Cost of a loft conversion | £31998 |
Build a kitchen extension | £41813 |
Build a hip to gable loft conversion | £41813 |
Build a granny annexe | £86813 |
Build a garden office | £9813 |
Convert a garage | £15813 |
Build a new garage | £18313 |
Build a flat roof extension | £21813 |
Build a dormer loft conversion | £41813 |
Lay a concrete foundation | £6063 |
Convert a bungalow loft | £28813 |
Basement conversion cost | £35398 |