If you are heavy into non-performing that portfolio management % will go up.

It's not pretty to model a 150 basis point increase in cap rates but the returns remain better than idle cash and certainly better than what will happen in non-real estate asset classes if that happens. 

Utilities are generally public and you can call them to get averages, taxes are public as well and can be pulled either from a assessor website or at their office, insurance companies can give you cash value and replacement value quotes by giving them an address, general rule for running calculations for vacancy is 5-10% of gross income, I have seen maintenance expenses all over the map (anywhere from $300-750 or a % of the rent - those vary depending on the number of doors in the deal as well as how much deferred maintenance has to be dealt with or how much rehab you are going to do to negate the deferred maintenance), contracted services, call a few landscapers and get quotes and use those for your analysis. 

If property is investment, look for a non owner occupied private money, commercial loan.

I rent out the rooms.What I’ve learned is having a room w a private bathroom is golden for my tenants they typically come from other roommate situation sharing a bathroom, having a private bathroom they see it as a luxury..Typically when rooms are rent out utilities are included, high speed internet is most important Utility for them..

A recent podcast highlighted how much information can be obtained from public records.

The state does have the right to take a property for non payment of taxes, but not without due process.

Sometimes all you need to do is have an architect create drawings of the non-permitted structure and submit them to the city.

The complementing instructions are unclear about non-residential foreigners. 

Hoping for an internet based solution.