My plan is to use my HELOC from my current primary residence as the down payment.

My primary residence, single family home and a large 7 bedroom duplex 

Investment Info:Single-family residence buy & hold investment in Nashville.

MTRs do have higher turnover than a typical LTR (usually between 2-4 times a year), but since most MTR residents treat the space well and since there is less moving in and out of furniture, it is not uncommon for an MTR to actually have less wear and tear over the year than an LTR (and a lot less than an STR), Arbitrage for the MTR operator has its own sets of pros and cons, but I just wanted to address the question of why would a property owner ever want to allow an MTR in their unit. 

Then I search the county records by their name to see if I can find their primary residence which is where you can send a letter.

You could 1031 out of the property, purchase a new one or something you might like, "Live" there for two years and convert the property to a primary residence. 

Quote from @Nicholas Cavato: Looking for advice from you BP pros out there.I will be purchasing either a single family residence or multi family residence home in the Cleveland, Ohio area no later than January 2025 and intended on purchasing using an FHA loan with an already formed Ohio LLC.

Primary residence capital gain $250,000 exclusion.  

I was told by my lender that this has to be my primary residence for some time.  

Investment Info:Single-family residence fix & flip investment in Charleston.