What rights/options might lot owners have in enforcing road maintenance when an HOA doesn't formally exist yet? 

I've heard many do it there as the enforcement is lax, similar to Lafayette, nearer to Boulder, but its not a good plan if you are investing.

Zoning enforcement will fine me as the property owner if the items are still sitting at the curb after a few days.

If they are VERY professional, they will have their processes in writing as verification that it is enforced equally and fairly by their entire staff.6.

Cathedral City has historically been poor at enforcing their ordinance and getting sound and parking issues in check (in my opinion) and is now getting a lot of pushback from locals, unclear as to whether they will start issuing new license again or not. 

I just don't know how you enforce it or define what clean and orderly condition.

Again, in my county once a tenant is served by the local law enforcement handling evictions they have 7 days to respond. 

Tax liens and municipal liens such as code enforcement liens often survive if they are not paid off within the foreclosure suit. 

I have been asking for photo ID, it's written in House Rules, listing, everywhere... and when they refuse, I let them cancel within 24 hours with no penalty.In a recent case, the guest complained to Airbnb, who backed them and after a few back n forth, here's what Airbnb wrote to me:The request for a copy of ID is something that you require from guests but is not supported by Airbnb and will not be enforced.

Sounds like the natural layout of your mountain property is not very conducive with the quiet hours you're trying to enforce.