Most of them are going to be for owner occupants though which doesn't sound like a problem for you.Be prepared to pay for your mortgage though.  

I found listings  basically give  limited information about the property, such as a listing in Pennsylvania,  16 unit  for 1,600,000 the ad proceeds to it for me that the property has a 7% cap rate, with an NOI of 181,800, at 99% occupancy.  

I plan to occupy one of the units for a few years at least and owner occupancy is also a requirement for FHA/VA loans.

I see lots of questions about occupancy requirements but none that specifically address my question.I am interested in building a portfolio of an investment rental properties.

Are you only expecting 153 nights of occupancy?

Occupancy rates seem normal to me but its not my market.

I already house hack a 2 family in Union City (not subject to rent control) and have thought the owner occupant route to get exemption from rent control for 3 families was an interesting strategy.

Reliable comps, rent restrictions, occupancy, and buy-outs -- absolutely.

Running a successful STR comes down to 3 Ps: pics, people & pricing.1) Decorate your house nicely & pay a professional photographer to take some amazing pics2) Hire amazing people - cleaners, handyman, recruit some neighbors to help fill in the gaps, & self-manage or hire an offshore VA to manage the property if you'd rather make yourself rich instead of making a local property manager rich (more on that here: https://www.biggerpockets.com/... )3) Price fiercely to maximize profits not occupancy (they're not the same thing).

Note:  City charges 10% occupancy tax on rentals under 30 days, and they are good at finding people and making them pay or stop renting.