And it wasn't a vacant unit.

Not only is your land cost spread amongst more units, but also major costs in your horizontal work (sewer, water, electric, paving) are spread amongst more units.  

Hi, I'm looking for multifamily deals to buy, anywhere from 60 units and up, and one platform that everyone are talking about is Costar.

Have you investigated whether zoning allows you to add an additional unit to your property?

Then create the lease and include copy of the unit condition move in inspection (completed by you and signed).

But this obviously depends on the lender  Assuming its a 1-4 Unit

That is what I did to start investing and buy my first rental unit if you have any questions on different strategies or want to go over your thought process let me know I would be happy to answer any questions for you. 

It seems like every town I look in has such strict regulations where you need to owner occupy your unit. 

OK, yes house hacking means you are living there and renting additional rooms or units from under the same roof.

I wouldn't do any renos or upgrades while they are occupying the unit-wait for a turn over.