You can also check meetup.com or search Facebook for real estate investment groups, clubs, or meetings in your area.Here is my generic beginner advice.1.

I have posted my listing routinely to sites such as Facebook, Craigslist, Zillow and Land Search but still have not been able to find a buyer for the lot.

So I contacted the tax collectors office and was told there was a legal loophole and that since the building had been owned by a non-profit for part of the year it would receive tax exempt status for the full year.

The builders loan couldn't approve us for the amount we need to get, but we had a loan broker find a loan for 10% down DSCR with a 2nd home status instead of investment home.

Even facebook might have some good local groups for you.

Cold calling, mailers, signs, google/Facebook, RE meetups, RE agents are all ways a whole sales would find deals

Other areas to check would be local real estate meetups (check BP Events & Meetups, Eventbrite, Meetup.com) and local DC Facebook groups as well.

I also saw your post on one of the local Buffalo facebook forums, and will caution you that you are going to get a WIDE variety of feedback from a WIDE variety of investors -- especially on that group! 

On Facebook marketplace you have to call it an apartment since they don't have a commercial option.

Current status is that the Dept of Health has not yet issued the Septic Permit yet.