Local control is the mythology of American zoning. But in 2025, the real story is state power—especially in California, where the state has increasingly treated housing scarcity as a statewide economic emergency rather than a neighborhood preference. The result is a new zoning reality: your city’s plan may be less powerful than the state’s housing statutes. Start with SB 9, California’s lot-split and duplex law. It was designed to legalize small-scale infill in single-family
