Do all states or counties in states require permits on Accessory Dwelling Units often referred to as ADUs? I like to put an accessory dwelling unit for additional rental income due to bidenomics and the out of control inflation and cost of living.

All neighborhoods in the country will require permits for accessory dwelling units, commonly referred to as ADUs. Here is the general permitting process for accessory dwelling units;

https://www.youtube.com/watch?v=tzu3uGaOH4g