Range from the cheapest single storey extension £34000 (KJM MAINTENANCE based in KA5) to the dearest single storey extension £67600 (D Howatson Building & Landscaping Services based in KA30).
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 KA20 by posting a job with HaMuch and we will send it to extension builders in KA20.
Job | Estimate |
Underpinning a house | £17308 |
Build a two storey extension | £87712 |
Build a timber frame extension | £25808 |
Install a swimming pool | £80808 |
Cost to build a single storey extension | £46154 |
Cost to build a side return extension | £35336 |
Install an RSJ | £2008 |
Build an outbuilding | £9808 |
Build a mansard loft conversion | £51808 |
Cost of a loft conversion | £31947 |
Build a kitchen extension | £41808 |
Build a hip to gable loft conversion | £41808 |
Build a granny annexe | £86808 |
Build a garden office | £9808 |
Convert a garage | £15808 |
Build a new garage | £18308 |
Build a flat roof extension | £21808 |
Build a dormer loft conversion | £41808 |
Lay a concrete foundation | £6058 |
Convert a bungalow loft | £28808 |
Basement conversion cost | £35336 |