Questions like this often get better and more actionable responses.Also, keep in mind that while this site is an incredible resource, opinions can sometimes come across as blunt.

We have run in to numerous accounts of this.

I see no value in it for evaluation.Realestate.com has always been a good site for accessing properties, but they do a poor job of evaluation. 

Walking score of 95.Pre COVID rental numbers:Monthly gross rent $15,250Cap rate 7.1%Future rental numbers:Estimated Monthly gross rent after current tenants move out $13,950Cap rate 6.5%Because monthly rent looks to be about 20-30% more if you rent by the month, I am considering renting out my duplex for monthly rentals on Airbnb/other sites and potentially for travel nurses (ideal because several hospitals are walking distance to my house).

But keep in mind if your using money you cant afford to get back then buying action property might not be appropriate for your current endeavors and its better to just buy open market were you can do proper due diligence and know you have a build-able site.

Rae, I would keep checking the sites including FSBO, FaceBkMarktplace, and driving neighborhoods. 

They asked how we got a hold of a site from a private listing.

With my other listings, I use pricelabs, and on their site it says to contact them for more unique pricing.

It looks like according to the county site (sbcounty.gov) they require all renter payment go to the active owner. 

Quote from @Grant Francke: For those with using Buildium for property management software, do you use Buildium's public site or do you use a website you have made and maintain?