A house has popped up in an area we're keen on moving to. It's quite run down so would need a full renovation and a hefty extension in order for it to work for us.
The existing footprint would stay as is, and we'd slap a big two-story extension across the full width at the back. The plans below show the existing footprint in black, with the proposed extension in red.
Quick summary:
I know this is massively lacking detail, so I'm only after a very rough ballpark to see if this a complete non-starter; so any guesses to the nearest 50k, or even 100k would be helpful. This is in the South East.
My incredibly uneducated guesses for each of the above is:
Any thoughts? Am I a million miles off?
The existing footprint would stay as is, and we'd slap a big two-story extension across the full width at the back. The plans below show the existing footprint in black, with the proposed extension in red.


Quick summary:
- ~12.5m x 3.5m extension on ground floor
- ~9.5m x 3.5m extension on first floor
- New kitchen + utility room
- 2 x new bathrooms, plus 1 downstairs WC
- New windows and doors in extension
- Plastering and new flooring throughout the house
- Electrics, gas, and plumbing
I know this is massively lacking detail, so I'm only after a very rough ballpark to see if this a complete non-starter; so any guesses to the nearest 50k, or even 100k would be helpful. This is in the South East.
My incredibly uneducated guesses for each of the above is:
- Extension - 150k
- New kitchen + utility room - 35k
- 2 x new bathrooms, plus 1 downstairs WC - 20k
- New windows and doors in extension - 15k
- Plastering and new flooring throughout the house - 10k
- Electrics, gas, and plumbing - 15k
- Unexpected stuff - 25k
- Total: 270k
Any thoughts? Am I a million miles off?