I could see that number increasing significantly but only time will tell. 

They just guaranteed that many tenants will get an annual 10% increase instead of the 0-3% increase that good tenants probably would have had. 

Little increases will help build trust and a relationship.

I have done so in the past myself but obviously had seller accept a larger discount due to the increased risk of default.

But here's the rub, will the rent increase over time work out to positive ROI in the above scenario? 

This couple has rented it for nearly a decade and it seems that there hasn't been an increase in the rent since they started renting.

@Mikki McIntyre It's definitely rough out there and people are having to use increasingly more creative ways to find wholesale and off-market deals. 

Without knowing your entire financial situation and looking at your past and upcoming tax returns, it's unrealistic to calculate this number exactly.Also keep in mind, that cash flow will be taxed, so that will potentially increase your tax liability.

In other words, seems like a unique way to increase the value of the two buildings by consolidating them as one entity.So of course first you'll want to find a real estate attorney with experience specifically in deals where the seller holds the note. 

Increase rents - this is probably the easiest and #1 factor. if you fined an under rented property and have the opportunity to increase rent you are on winner.