Motivation is like a battery it drains over time.

After 9/11, there was a drain to Jersey City because of proximity.

If it were me I would not advertise as in-unit until the split was done and all the necessary hookups were there including drain and venting.

Before we started supplying W/Ds you should have seen some of the dumb installations I saw done by tenants - supply hoses jerry rigged with duct tape, drain lines not hooked up, dryer vents crushed flat, dryers miswired, etc.

The drain has a vent pipe that goes up the wall and it may need to be relocated as well.

The discounts buyers may get are a trade off because the vacancies, problems, people relationships can drain the 5-9% cap rates down to 3%. 

You'll never be able to mitigate & prepare for all issues, but you can manage in a certain way to reduce it to the point where it is profitable financially and not mentally draining. 

Once the drain pipe under the tub sprain a leaked, the plumber had to cut a hole in the ceiling in the apartment below, the hole about 10" in diameter, surrounding sheetrock all water logged, a contractor said he'll fix it with a minimum charge of $300.

Certain cleaning chemicals should not go down the drain and I let them know they should be looking for chemicals marked septic safe.

don't rely on tenant for this type of contact.. for this..YOu call original vendor and get him out for a visit to see what can be done..Then or before thenGet a second pool company to come out and look and give you a bid to repair the liner.. the pool will probably need to be partial drained if it's not already down to the tear mark. and or cost of new liner.F is for fabulous right... check your vendors before you hire.