Are there certain metrics/performance you hold them accountable for (vacancy/turnover)?

Vacancy, fix up, management cost (if their is any), etc. and I’d rather take partial payment than no payment.

@Sameer Kh when you say it cash flowed $1200 last year, is that after accounting for CapEx, repairs, vacancy, and any other predictable expenses?

Vacancies do happen, repairs are needed, and cap ex will for sure be there. 

. @ 4% (30% of rent)Even if you want to cash flow just $150 a door, that would be 20% of rent, leaving 40% of rent for everything else (100%-10%-30%-20%=40%)40% of $800 or $320, is then what needs to be left at a minimum for monthly 1) property tax, 2) insurance, 3) vacancy, 4) maintenance, 5) capex, 6) tenant replacement, 7) tenant renewal and 8) lawn maintenance costs. $320 for all these categories just doesn't seem feasible on a monthly basis.Therefore, I think it's safe to say that it's either your cash flow that declines (e.g., <$100/mo.) or you hope there's months with little to no 3) vacancy, 4) maintenance, 5) capex, 6) tenant replacement, and 7) tenant renewal costs, which would be foolish.

. @ 4% (30% of rent)Even if you want to cash flow just $150 a door, that would be 20% of rent, leaving 40% of rent for everything else (100%-10%-30%-20%=40%)40% of $800 or $320, is then what needs to be left at a minimum for monthly 1) property tax, 2) insurance, 3) vacancy, 4) maintenance, 5) capex, 6) tenant replacement, 7) tenant renewal and 8) lawn maintenance costs. $320 for all these categories just doesn't seem feasible on a monthly basis.Therefore, I think it's safe to say that it's either your cash flow that declines (e.g., <$100/mo.) or you hope there's months with little to no 3) vacancy, 4) maintenance, 5) capex, 6) tenant replacement, and 7) tenant renewal costs, which would be foolish.

I have estimated insurance, repairs, vacancy and capex for the time being at 100 each. 

I guarantee I have a lower vacancy than most pm's in the area and are managed better. 

With dumb math, I'm making roughly 100 dollars a month.The deal isn't so sweet when I include vacancy, of which there has not been any yet, capex, wear and tear, and time/management (still self managing of course).However, I could easily rent it for 150-300 more.

I'm also making it easier for tenants to move into my rentals which makes my rentals more desirable and will reduce vacancy time.If anyone's interested in learning more, send me a private message.