I also can't imagine its compliant with local code.

Concrete foundation contractor.

The concrete doe slope away from the house fortunately.

If it has been doing a while the water can degrade the concrete, wood, grass, etc to the point it flows in the direction of the house & begins to puddle.

This deal would be for a total of six duplex (12 doors total) with each unit having 2 beds, 1 bath, 1 "office" in the basement (aka bed with non-compliant egress). 

But you have to make sure you're Dodd Frank compliant.

These investors think they're magically going to raise and lead an army of compliant and reliable contractors to certain victory and Y-U-G-E profits.

Then ask them if there is a particular day or time that absolutely does not work for showings, and by showing that you are willing to work with them, most tenants will be compliant for showings on the other days/times.This is definitely a case for open communication, you are both on the same side and want the showings to end, but what you want to make clear is that they can have a hand in that by making their home as attractive as possible, and opening up showing times so that people will want to see it and sign a lease.Good luck! 

2nd floor apartment of a 100 year old house, someone decided it was a good idea to pour concrete between all the floor joists, thereby rotting them out.

Like upgraded electrical, heating, ventilating, air conditioning, plumbing, ADA, etc...Where this comes into play is if say a tenant of one apartment unit sets his unit on fire, burns it up and now you have to go in to rebuild his unit.