I don’t know ANYTHING about this property or offering; for all I know it could be the greatest deal since sliced bread.  

With 37 properties, it cost us about two dollars per door  per month.

My understanding (I've purchased property at a Virginia foreclosure auction) is if there is property left inside, you cannot simply throw it out. 

If you’re considering making an offer on a property with tenants you’ll be inheriting, it’s a smart move to set your closing date for the middle of the month.

I’m currently a wholesaler, but I’m looking to buy my first investment property/house hack in the Phoenix area.

  $100k liquid cash will get you $400k property leaving you with zero left over OOS

Curious to hear your thoughts whether investing in such a property would be a good idea.

Can they prove how long it takes to rent a vacant property?

IDK what a "validated seller" means but I'll read between the lines and assume its some 85+ year old dude that built 1 or both of the buildings, likely didn't pull permits, and likely has code issues to resell as a true residential property never mind to your comment the changing in area and zoning.If you were going to take it on you'd want to understand the current zoning, current residential terms (is there a lease in the homes?)

Because the Property Class dictates the Class of the tenant pool that the property will attract.The Tenant Class greatly impacts rental income stability and property maintenance/damage by tenants.Both Property Class and Tenant Class will affect what type of contractors, handymen and property management companies you should target and be willing to deal with a property.The Property Class will also impact the maintenance & renovations you do to, “Maintain to the Neighborhood”.Why is that important?