Range from the cheapest £25 per hour and £200 per day (Simply London Builders based in W3) to the dearest £50 per hour and £350 per day (Adrian Design Ltd based in W4).
Comparing hourly and daily rates of Extension Builder's 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 - Click 'Get quotes' and describe your job and we will send it to your local extension builders for FREE.
See table for all Extension Builder rates in W3
Simply London Builders offer a vast range of building services, specializing in all sorts of house extensions, loft conversions, garage c...
Hi we have 15 years of experience in building and construction industry our specialization is bathrooms and renovations please have a loo...
Job details | Estimate |
Underpinning a house | £1727 |
Build a two storey extension | £5756 |
Build a timber frame extension | £5756 |
Install a swimming pool | £3454 |
Cost to build a single storey extension | £46048 |
Cost to build a side return extension | £52955 |
Install an RSJ | £1007 |
Build an outbuilding | £2302 |
Build a mansard loft conversion | £11512 |
Cost of a loft conversion | £32234 |
Build a kitchen extension | £11512 |
Build a hip to gable loft conversion | £8634 |
Build a granny annexe | £5756 |
Build a garden office | £2302 |
Convert a garage | £1151 |
Build a flat roof extension | £1957 |
Build a dormer loft conversion | £2302 |
Lay a concrete foundation | £2302 |
Convert a bungalow loft | £3454 |
Basement conversion cost | £32234 |