When the reassessment occurs on the property what are you expecting for that to appreciate?

Appreciation is occurring and I suspect will continue as the market strengthens.  

Same issue could occur again to housing costs.  

I agree 15 years is not a long time but what is occurring is jurisdictions then pass laws to protect the low cost housing.  

His recommendation is a good temporary solution to see if more settling occurs then take measures.1.  

The other option is a water supply line, but that would typically resulting a steady leak and the damage would occur faster.Really think about what is above that space that could cause the issue.

The investor loss incident being mentioned (flamingo las Vegas) is an event that has occurred in Q3 2020.

My question is this, can I deduct my passive losses that occurred in 2017 on my 2017 taxes or does it get rolled over to 2018 because my income is too high?

Perhaps @Ned Carey will chime in but IMO the valuation should have occurred prior to bidding.

So, essentially the money from the ultimate buyer can NOT be used by the intermediate buyer to close on their purchase since that would be using money from a purchase that can not occur until the prior purchase has been completed.