Do I need a Painting license in the state of Wisconsin? My brother & I have painting in northern WI for over 20 years with out one & just heard that we might need one & we are wondering if there is any truth to it.

And an EPA Hazzardous materials license & bond as well... even deck cleaning / power washing businesses have to have that. (That is in the last year I believe)

Not surprised if they want a business license as well.