The local government has declined to get involved. The septic system being certified for a set number of people is listed with the county but they won’t reinforce anything.
So my Airbnb is small, it is really a couples retreat and is right next to our cabin, so I have no trouble monitoring it. It is not conducive to large groups or parties so I don’t have problems. The issue is the 2-3 rentals in the neighborhood that have absentee owners and are managed by rental companies. The neighborhood board member in charge of rental issues and I have taken it upon ourselves to call the management companies when there are violations, mostly because she and I don’t want the neighborhood to vote to restrict all rentals as she has a similar setup to me, a detached garage with loft apartment that she monitors very closely as well. We were trying to come up with a way to have a system to fine the owners when they are out of compliance.