Range from the cheapest £29 per hour and £209 per day (Dell Developments Ltd based in SO18) to the dearest £40 per hour and £240 per day (A W PAVING LTD based in SO31).
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.
yesterday
Back extension, permitted development. 5.6m x 2.6m, full width of the end-of-terrace house. Needs to include standard decoration.
18/09/2024
I am looking for a very rough initial estimate on what a starting code for a job like this might be? Planning application viewable here- https://planning.bournemouth.gov.uk/plandisp.aspx?recno=110002 Brick construction Up to floor level then rendered block above. EPDM roof. Looking for full build and internally plastered. Flooring, decorating etc we will handle.
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See table for all Extension Builder rates in SO45
| Job details | Estimate |
| Underpinning a house | £1557 |
| Build a two storey extension | £5189 |
| Build a timber frame extension | £5189 |
| Install a swimming pool | £3113 |
| Cost to build a single storey extension | £41510 |
| Cost to build a side return extension | £47737 |
| Install an RSJ | £908 |
| Build an outbuilding | £2076 |
| Build a mansard loft conversion | £10378 |
| Cost of a loft conversion | £29057 |
| Build a kitchen extension | £10378 |
| Build a hip to gable loft conversion | £7783 |
| Build a granny annexe | £5189 |
| Build a garden office | £2076 |
| Convert a garage | £1038 |
| Build a new garage | £2076 |
| Build a flat roof extension | £1764 |
| Build a dormer loft conversion | £2076 |
| Lay a concrete foundation | £2076 |
| Convert a bungalow loft | £3113 |
| Basement conversion cost | £29057 |