Range from the cheapest single storey extension £27600 (Animus Construction Ltd based in E6) to the dearest single storey extension £61200 (S M G Building Contractors based in SE18).
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 Charlton by posting a job with HaMuch and we will send it to extension builders in Charlton.
Job | Estimate |
Underpinning a house | £17363 |
Build a two storey extension | £87794 |
Build a timber frame extension | £25863 |
Install a swimming pool | £80863 |
Cost to build a single storey extension | £47254 |
Cost to build a side return extension | £35956 |
Install an RSJ | £2063 |
Build an outbuilding | £9863 |
Build a mansard loft conversion | £51863 |
Cost of a loft conversion | £32463 |
Build a kitchen extension | £41863 |
Build a hip to gable loft conversion | £41863 |
Build a granny annexe | £86863 |
Build a garden office | £9863 |
Convert a garage | £15863 |
Build a new garage | £18363 |
Build a flat roof extension | £21863 |
Build a dormer loft conversion | £41863 |
Lay a concrete foundation | £6113 |
Convert a bungalow loft | £28863 |
Basement conversion cost | £35956 |