Like deferred maintenance, (bad roof, worn out water heater/AC Unit, warped flooring, water damage) etc, unpaid utilities,  unpaid taxes, a second loan, unpaid HOA fees, a bad pool, bad reputation, sometimes squatters, sometimes they were drug houses, and so on.

If there are people there will be a need for MTR-- getting your location, unit size and pricing to align is the magic sauce.

I plan to live in the multi-family for a year then move out and rent the unit.

That isn't written somewhere specifically that way, but your lender will ask why you would move your primary from (for example) a 2,000 SF SFR to a 750 SF unit in a four plex? 

One of my early properties barely broke even, but after a couple of years, rent hikes and expense optimization turned it into a strong performer.For cash flow benchmarks, I usually aim for $200-$300 per unit, but your situation.. house hacking.. offers unique benefits like reduced living expenses and quicker equity buildup.

People of all experience levels come and share their insight!

if its a single family you'd get an appraisal called 1004 as is + arv . if its a 2 to 4 unit you'd get a 1025 as is + arv appraisal .

If i have only a single unit security deposit in the account, it will likely get a service charge.  

If so, how have y’all figured out level 3 soils tests before purchasing the land at auction?

The 1 and 2 BR units at the same property were not experiencing this.