Range from the cheapest, mostly independent, £25 per hour and £200 per day (Archway Construction (UK) Limited based in PE1) to the dearest, normally the best, £40 per hour and £250 per day (Cambridgesire County Construction based in PE28).
Comparing hourly and daily rates of extension builders 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.
Convert Garage into lounge area
Hi I was hoping to get a quote for the renovation of an entire house. It’s about 60 years old. I would need: 1. potential plastering of walls, r 2. removal of an existing kitchen & fitting of new 3. Removal of 1 bathroom & fitting of 2 4. garage conversion 5. flooring & carpet, 6.potentially putting in new windows all over & doors too. 7.Potential breakdown of a wall 8. Putting on...
Dear Builders, I am looking to undertake a hip to gable roof conversion, increase roof height and convert the space into two bedrooms and a bathroom. It is a detached house, located at: 20 Seymour Street Cambridge CB1 3DQ Can I arrange an architect to assess my house and provide some guidance? Best wishes, Yassar
We need extension builders like you to help local homeowners with their jobs.
| Job details | Estimate |
| Underpinning a house | £1658 |
| Build a two storey extension | £5525 |
| Build a timber frame extension | £5525 |
| Install a swimming pool | £3315 |
| Cost to build a single storey extension | £44202 |
| Cost to build a side return extension | £50832 |
| Install an RSJ | £967 |
| Build an outbuilding | £2210 |
| Build a mansard loft conversion | £11051 |
| Cost of a loft conversion | £30942 |
| Build a kitchen extension | £11051 |
| Build a hip to gable loft conversion | £8288 |
| Build a granny annexe | £5525 |
| Build a garden office | £2210 |
| Convert a garage | £1105 |
| Build a new garage | £2210 |
| Build a flat roof extension | £1879 |
| Build a dormer loft conversion | £2210 |
| Lay a concrete foundation | £2210 |
| Convert a bungalow loft | £3315 |
| Basement conversion cost | £30942 |