The numbers tell me I will make ~600 per month including all the expenses on maintenance, vacancy, etc.

Per 2015 Landlord Tenant Handbook, rent control also applies to the following:"Residential rental units covered by the RSO include: apartments, condominiums, town homes, duplexes, mobile homes, mobile home pads, and rooms in a hotel, motel, rooming house or boarding house occupied by the same tenant for thirty (30) or more consecutive days."

Not so much 1,000 cash flow (I also assume you are talking about actual net income after expenses, including ongoing repairs, management, replacements).

Does it include CE classes? 

RBC will only lend if you have no more than 5 mortgages (including the one you are trying to finance).If you need to go commercial for a small multi (say 6 - 12 units) which is <1-2M in valuation, I would stay away from the Big-5 and approach your local credit union.

I just increase my rents by $50 and say water is included, job done.

I think Millenials, my generation, have a different mind-set when it comes to a lot of things, including investing.  

@Chase Gochnauer Definitely do not include depreciation expense in your valuation.

Sometimes when people have identity theft they will enter a statement that is included with the report so people know why certain tradelines and other items are listed on the report.  

Again, keeping in mind that this is a small duplex, as the landlord I'd rather not pay an extra $40 a month for standalone internet/cellular service.Which leads me to my question -- insofar as the submetering system could function through a tenant's cable internet service, is there any legal prohibition on including language in a lease to require that a tenant maintain such internet service for the stated purpose of monthly water readings?