Now that said if you are in the city limits of one of the towns that is different and they can have their own laws which they may enforce much more vigorously. 

I also like to call the code enforcer and hear his or her take.  

Excessive noise means any unnecessary noise which persists for ten minutes or more; such period of noise need not be witnessed by enforcement personnel if the occupants of two or more separate housing or commercial units certify that they have experienced such period of noise and describe with particularity the sourceExcessive noise means the presence of sound, as measured by standard testing devices, of a volume or in quantities and for durations which endangers human health, welfare or safety, animal life, or property or which unreasonably interferes with the comfortable enjoyment of life and property in the County or in such areas of the County as are affected thereby.There is 2 "legal" definitions of excessive noise

Whether or not the owner lives in an “illegal” apt has no bearing on enforcement. 

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.

The cost to modify it is hers not the landlords and the landlord can require that money be put in escrow to return the property to its original condition when she leaves. https://www.nolo.com/legal-enc...I would also call local code enforcement.

I met a really nice guy at the local REIA meeting who used to work as a Code Enforcement Officer there. 

Good idea talking to the local law enforcement...

That means people can rent homes through companies like Airbnb.The City of Henderson says while it’s allowing short-term rentals in residential areas, there are still plenty of regulations so that enforcement will be stronger than ever.

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