An agent brought it to me.

I did have a case where during a lease 2 roommates brought in a 3rd and I did not increase the rent, but do not think that is outright prohibited from discussion. 

He needs properties and connecting with agents is a very low cost way to get properties, as Realtors are trusted sources for motivated sellers and naturally get deals brought to them.

All these questions and thoughts should be brought up by whichever real estate broker you use.

The tenant's month to month lease stipulates that the tenant is responsible for all utilities, including water and I recently spoke to them to tell them the water bill must be paid up and brought current.

I especially agree with @Jay Hinrichs that being brought in mid-stream without disclosure upfront is not an acceptable practice. 

But to my surprise, it’s brought in a few clients.

This is a 7 year old thread that you just brought back to life.

The last house I bought, was brought to me off-market by my agent, and it's seeming that off-market is the only way to get good properties without the MLS prices.I've recently got a nice business card printed up, and would like to start a direct mailer campaign, using BatchLeads to find multifamily properties in the local towns that I wish to invest in.I have a pretty strict criteria about what I'm looking to purchase at this time:-Legal 2-or-more unit large Multifamily (not required to be owner occupied)-Each unit should be at least 3 bedrooms (so if it's a duplex, it needs to be 6+ bedrooms)-Sewer (not septic)-Gas (not oil)A lot of this information is not readily available online, so once I start my mailers, I'm sure I'm going to find people who eventually respond, but that don't have criteria which match what I'm looking for.I feel like it would be a waste if I paid a bunch of money for direct mailers, and then someone reaches out to me to sell, but their house doesn't match the criteria of what I'm looking for -- I don't know anything about wholesaling.What can I do to monetize these leads, or is the answer is that I need to learn So we believe no lead is a bad lead.

These people are so nice that they are still helping you even though most of your responses are just overglamorizing them or profusely thanking them because they didn't ask you any questions.The other problem is people who tell you how bad they feel for you because other people didn't light a scented candle for your two-line post and spend an hour of their own time trying to help you when you have a new profile, with new photo, and no information.You lucked out with some nice people in here @Scott Meech, but it's because of them that you have information not because you brought anything to the table other than a hand out.