Joanna and Steve Vernetti have lived in their 1917 bungalow in Hancock Park for over 20 years. As their family increased in size, they needed more space—so they initially thought about adding another floor. After California passed the regulation in 2020, they called up their good friend (and former neighbor) David Thompson. Thompson, a founding principal of Assembledge+, had recently participated in a Los Angeles Magazine project to imagine solutions for those who lack housing in the city. Their notion was for public agencies to subsidize building ADUs in backyards along alleyways, dovetailing with existing alley revitalization initiatives.