I want to start with residential properties multi family and do the value add method.

I would say the likelihood of it becoming an issue is low.

If not you will need a very large hot water heater.Would that remedy issues of hot water running out 

I can't imagine it really has to do with this EXTREMELY minor payment issue. 

Additionally, consider using a secure payment method for the deposit to prevent issues.

Permits are very difficult to obtain (we build homes in Chicago, so that may be a non-issue for us considering what we have to deal with here LOL :)4.

Also, you should only be looking for cash buyers so financing contingencies should not be an issue. 

If you were in fact a permanent resident alien, there are many programs that I utilize that do not haircut your eligibility.I believe a U.S. bank account is required as well - I haven't seen a client try to use a foreign bank account but once, but I do know that the particular lender we were utilizing took issue with that.

If you are continuing to pursue this, I’d suggest having an attorney experienced in environmental issues assist you in the negotiation and due diligence.

I did a search for multi-families for you.