Range from the cheapest £17 per hour and £150 per day (Teodora Baleva based in CR0) to the dearest £60 per hour and £350 per day (Dara Builders based in SM5).
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 SM6
We design, build and renovate to the highest standard. Our team of revolutionaries is dedicated to realising your passion and making your vi...
Been with my dad who has been trading for over 45 years.
Dad as recently retired and I am carrying on with the business.
...
| Job details | Estimate |
| Underpinning a house | £1686 |
| Build a two storey extension | £5620 |
| Build a timber frame extension | £5620 |
| Install a swimming pool | £3372 |
| Cost to build a single storey extension | £44964 |
| Cost to build a side return extension | £51708 |
| Install an RSJ | £984 |
| Build an outbuilding | £2248 |
| Build a mansard loft conversion | £11241 |
| Cost of a loft conversion | £31475 |
| Build a kitchen extension | £11241 |
| Build a hip to gable loft conversion | £8431 |
| Build a granny annexe | £5620 |
| Build a garden office | £2248 |
| Convert a garage | £1124 |
| Build a flat roof extension | £1911 |
| Build a dormer loft conversion | £2248 |
| Lay a concrete foundation | £2248 |
| Convert a bungalow loft | £3372 |
| Basement conversion cost | £31475 |