Electrics and flooring is the cheap bit.
The question you need to ask is how much is that going to cost to heat if you don’t somehow make it more thermally efficient?
All that glazing need to be brought up to date and there is lots of it!
A mix of internal and external insulation as you don’t want to mess with the fitted furniture would be on my list along with solar batteries and new heating (heat pump?)
280k if you were savvy, project managed and did some work yourself.
Shit loads more if there are 3 sign written vans with a considered typeface and proper kerning rocking up every day and an office manager who answers your phone calls about the shade of grey for the render.
But it’s also about comfort levels in an inefficient home compared to one insulated/draught free and with better glazing (solar control in the right places as well as low-E).
and that budget is for some things that are not to do with heating or will need to be replaced anyway.
Electrics and flooring is the cheap bit.
The question you need to ask is how much is that going to cost to heat if you don’t somehow make it more thermally efficient?
All that glazing need to be brought up to date and there is lots of it!
A mix of internal and external insulation as you don’t want to mess with the fitted furniture would be on my list along with solar batteries and new heating (heat pump?)
280k if you were savvy, project managed and did some work yourself.
Shit loads more if there are 3 sign written vans with a considered typeface and proper kerning rocking up every day and an office manager who answers your phone calls about the shade of grey for the render.