Multifamily properties, particularly those with 2 to 4 units, can appreciate at different rates compared to single-family homes, depending on a range of factors such as location, market demand, and overall economic conditions.

If it's below average, I would discontinue the lease when it's up and then do a renovation then put it on the market for market rate. 

When does the rate cap expire?

In 2023 when the interest rates went up and my minimum payment tripled , I sold the house for a profit.

Don’t chase rates.  

Save the low rate: Keep your current loan and focus on building savings for the next down payment through budgeting or a side hustle.2.

So make sure to ask not just about rate but other terms. 

Yea they would keep that in place and you'd get a second position mortgage for the rest at, well, higher than todays rates.

The highest rated businesses tend to get the best loan rates for their borrowing and also for buyers that want to own the properties with those tenants and leases in place.To get 30 year amortizations at the best interest rates fixed for a long term with 30% down you usually need investment grade BBB- or better rated tenants.

FEMA implemented Risk Rating 2.0 in 2021.