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?  

This is a great strategy but does not function here in Utah or Florida.  

LOLPlus they may find like I have that self management is not that hard and its best keeping that role within the landlords business and not outsource the MOST important function in a land lording business, selecting and retaining good tenants.

The original developer of the Condos went bankrupt and after that point there has not been a functioning HOA.

Is your program fetching data files from the site or is it an automated script that performs the human functions of clicking on the website interface to pull out the data?

Replacing roof, HVAC, water heaters, etc. can certainly change the math quickly on a $100k property.That said, if its currently rented you can assume the plumbing and electrical systems are at least functional.  

For example I would consider anything with less than 20' clear height functionally obsolete as industrial buildings are growing in height every year to accommodate new high bay distribution strategies. 24'+ is ideal.

They should be taking care of all of the big-ticket functional items - roof, hvac, water-heaters, plumbing, electrical, flooring, sinks, tubs. etc.If they are just throwing down paint and carpet, then you'll probably have a high capex in the next 5 years.James

When you meet someone in line at a store you are steering the conversation, when you are at a function and meeting people you are networking.

Hence the functioning of the industry.