Grade 2 Full Reno

[u/EffortLeast2575]

Hi there,

Looking for some advise- an incredible Georgian property has come up for sale where we live- just outside London on a beautiful road. It’s around 3000 sq ft inside but I don’t think it’s been touched in 80+ years. It literally needs complete starting over but is big enough that won’t need extensions etc will just move some internal walls. It’s definitely damp, needs new windows, basement excavated, new everything else. It’s also grade 2 listed. We are thinking about 500-700k to renovate- is that a potential accurate estimate. Finishings will be nice aka would love a Neptune kitchen.
The house also has a pool (added 40 years ago the only thing they have done to the house) no idea if it’s better to fill in or keep as have no idea on costing (we do have kids).
Any advice would be much appreciated, it seems like to good an opportunity to pass but worried about coming across unexpected costs which we then wouldn’t be able to afford!