What else do we need to do to fully vet this property.

It shows you aren't messing around.     

They've both given better rates for the same coverage compared to anyone else I've dealt with. https://www.gooseheadinsurance.com/ https://nreig.com/

I ended up just holding the duplex and not rebuilding for now and have not worked with an architect for anything else 

The local banks online systems pale in comparison and are pretty clunky to use.Unfortunately, other than writing the unit number on the deposit slip, there is not much else you can do to determine who has paid. 

Could probably write in a rent increase after year one to keep up with the market.All else being equal, I’d say first come, first serve.

They provide general figures on a town or community, including average home price sales and average rents, along with anything else you might want to know. 

It would also be good to do a google search to see who else is out there and what is not out there. 

I hope that you have changed the locks and secured your property to prevent anyone else with a key to return.

Everything else is in order, except that the building owner has refused to allow the insurance company to add the lender as an additional loss payee (which as I understand, is both required and standard by lenders in order to be able to loan).Are there any other options here?