Currently We own 3 doors.  2 SFH plus a condo all in Multnomah County.  

Curious on how you were able to get the  OK on a "special permit;" mine is a also detached garage, except the neighbor next door seems to not want this property to be run as anything more than a single family property and have made it known.

Having two income producing doors in an area with a lot of upside.

It sounds like if you own 100% of the LLC and are on the properties mortgages you are in the financial drivers seat.

You are operating a business and you don't know what you can legally do or not do?

I own 12-doors there and have been investing in the city since 2019. 

No knocking on doors, no "the check is in the mail." 

If you're willing to put the time, strategies like cold call, direct mail, door knock, PPC, social media might be worthwhile.

For instance, at one home I saw a crack in the walkway by the steps leading to the front door.

However, I am the owner and broker of a leasing brokerage called Open Door Realty.