For example if the house has two unpermitted basement bedrooms people are not going to pay for those rooms the same as two standard ground level bedrooms but they may retain some value to a typical buyer as finished space.  

Opportunity Zones retain their designation for 10 years.

Do they have pictures on the wall from their kids Naval Academy graduation (saw that in Boyle Heights).If you think they can be moved, decide how much it will cost.

Checking Yelp is a good way to tell if you have a good property manager some managers are really bad and seem nice in person to landlords but are awful at attracting/retaining paying tenants. 

It has been well-maintained overall, but has not been updated (knob and tube wiring, radiator heat, no central air, plaster walls).

There is also sticky spilled mixed drinks on the wood floors, walls, and wood stairs.

Look at their social media-- not only theirs-- but who are their friends, what do they write on other people's walls, etc.. .it's a lot of work, but 100% worth it. 

They haven’t worked on the house but planned to.The inspector was stating that they could rip open the walls and other things to be able to inspect the unpermitted work.

There was water damage and mold along with a crack in one of the walls.

I started washing walls with TSP to get ready for primer and paint on day 2.