This way, you're not locked into a long-term commitment and can start looking for a new tenant.

Here, a Co-Op marketed an "Investment Program" of notes paid at variable interest rates on demand after a lock-out period. 

No I didn't hear someone say this was said I heard it with my own ears, it was just ignored at the time just as Bidens statements on rent controls were ignored. 

This is about to bite us though as commercial loans only lock for 5 years - so our 4% commercial loan will reset in the next year and probably increase to the 6% range if we don’t pay it off before then.

Would the interest rate change year to year or be locked in forever at whatever the federal rate was at the time of closing.

Some have a fixed interest rate for a short period of time, some have a fixed period for a long time; some allow you to "lock" an amount you draw at the rates of the day (PNC).  

@Ronald MejiaYou can buy in cash and or use a large down payment, 60% for example and you can lock in a rate that cashflows so you can have some liquid cash for unexpected expenses or use that cash for the down payment on the next BRRRR.

That being said, I fell out of my chair when I was able to lock an individual investor (personal name) using a 1031 Exchange with about 50% down and 800 credit scores at 6.99%.

That completely destroys your demand thought process.If rates drop even lower than that, then locked-in rate holders are going to become amenable to selling.

He'll have to have his cat locked up on those days.