Strong Statewide ADU Reform Matrix
Legislative ADU activity has been coming at such a dizzying pace that it is extremely hard for anyone to keep up. For ADU enthusiasts, this is excellent news, of course.
The fact that States are now clawing back their zoning powers from jurisdictions is fairly new. I would pin this change to the lowly ADU, which helped to started this phenomenon in CA in 2017. The concept is now launching and evolving so quickly, that I predict the majority of States will have preemptive zoning to address statewide housing matters including ADUs but also middle housing, within a year.
Massachusetts Adopted a Strong ADU Law, but Local Regulations will Still Prevent Them
I grew up with an illegal ADU in my attic in Newton, MA that my mom used to house grad students from a nearby campus. The tenants were like members of our family; they literally walked through the center staircase in house to access their cute, affordable, attic, studio apartment.