> One would require cities to permit backyard flats and other accessory dwelling units by right. Another law would allow duplex homes to be built in places zoned for single-family housing. If Montana Governor Greg Gianforte, also a Republican, signs even a couple of these bills into law, Montana will have leapfrogged several East and West Coast states…<p>What? California (the most populous state, and most of the West Coast) has both of these provisions in law already.