Im trying to figure out a solution on how I can keep the tenants occupying the home, while my end buyer can make repairs on both the units for about 2 months to add value to the property and potentially raising rents. 

It is an opportunity to persuade them about the attractiveness of your property directly, so make sure you’re constantly monitoring activity on your listing.Why is it Important to Optimize Your Real Estate Listings?

Concerns with parties can be mitigated with cameras, noise monitoring, not renting to locals, etc.

What I mean is calling them like traditional agents but offering them two solutions: list with me or maybe I have a buyer who will buy from them.

I think my solution would be to get an export from the utility companies of the last 12 months bills.

I’d recommend keeping your W-2 for a while starting out as it’s the easiest solution.

You'll likely be able to get a sense for whether or not they're open to another solution or if they're dead-set on pursuing a foreclosure at this point.   

Remember I always say, fast solutions have slow problems.

If none of those solutions will work, and they are MTM, you can give them notice and terminate their tenancy, repair the stairs and re-rent out the unit. 

Ultimately, you need to monitor loss to lease, which means keeping up with where rents are.