Good balance of moral ethics and business.

At lease end tenants get refunded  or pay any remaining balance owed for water/sewer/ trash. 

If you are accrual basis, you are allowed to defer revenue up to one year when reported correctly, so you would report the amount actually collected in 2019 as taxable in 2019, and the balance would be taxable in 2020, even though it sounds like amounts will be collected past that date.

You can generally use the deposit for cleaning, repairs, and unpaid balances on rent, utilities, etc.You need to educate yourself on what is "ordinary" wear-and-tear and what is considered abuse and neglect.

You are buying the property for less than the balance of the loan so, that assumes you are getting your own loan or paying cash.

There's a balance there somewhere.

Repayment of principal is merely a balance sheet movement that never hits the P&L.Your accountant should look to what was done with the proceeds over time to determine accounting treatment as well as interest tax treatment. 

There are a couple states that require you to end the lease at the end of the month.If you can give notice at any time, my recommendation is that you wait until he pays rent because there's a very good chance he won't balance his account on the way out the door. 

Applicant has a higher credit score above 720 but has 15+ 30 day late mortgage payments over 10 years (four in the last two years).  75% balance on credit limit.No rental history as a previous home owner.  

For example, if we reside in the SF home, it would not generate income to balance out the equation.