I don't know the laws around returning the security deposit.

The tenants gave me the okay that they were fine with only 1 of them on the account, but I'm a bit un-easy that I may be screwing with the very strict MA rules surrounding Security Deposit Account.I ended up setting up a single account with 100% of the security deposit in it.

Eviction but it really depends on the state laws. in NY I know tenants that don't leave after their lease is up by law can stay on the property till the sheriff comes to evict them and that can take a pretty long time of people living there rent for free. 

Not sure your laws, but you can buy a very accurate water meter for under $200 and installs quickly.

Each state has their own laws regarding “diligent attempt to serve, serve by posting, or service by publication”.I assume you bought title insurance, start there if necessary.

Depends on the exact wording regarding default in your contract, or absent that, state law......rarely worth it.

I devoured whatever I could find on finance, real estate, investing, tax laws, etc.I bought my beautiful condo in 2011 while rates were low, under market value and carried both properties through the recession seeing a HUGE return and everything became clear. 

They just said this to my fiancé (they prefer to deal with him instead of me because I’m more strict lol!)

Best learn the law before you end up in court.

This may require compliance with SEC laws.