California is done asking nicely. This week the state took five of its own cities to court, accusing them of flouting the law that requires every community to plan for its share of new housing.

The lawsuits

Attorney General Rob Bonta and Gov. Gavin Newsom filed legal action July 16 against Calexico, Costa Mesa, Half Moon Bay, Ridgecrest and Turlock, all of them well past the deadline to adopt a state-approved housing plan. The petitions ask the courts to order the cities into compliance and to impose the penalties state law allows. State officials said each city had been given repeated chances, including formal violation notices and rounds of meetings, before the matter reached the courts.

"No city gets a pass," the governor's office said in announcing the action, a message Newsom has repeated as his administration presses cities to permit more construction.

What the law requires

Under California's housing element law, every city and county must periodically update a plan showing how it will accommodate its assigned share of new homes, a figure handed down through a process known as the Regional Housing Needs Allocation. Cities do not have to build the housing themselves, but they must zone enough land and clear enough regulatory hurdles that the homes could be built. Statewide, the current cycle calls for planning for roughly 2.5 million additional homes.

When a city fails to adopt a compliant plan, the state has a growing set of tools to bring it in line. Under a 2024 law, noncompliant cities can face escalating monthly civil penalties, with the money funneled into affordable housing in the very community that fell short. Cities that lack an approved plan can also lose their power to block certain affordable-housing projects, a consequence developers have used to push past local opposition.

The cities' side

Local officials across the state have long complained that their housing targets are unrealistic, that they lack the money and infrastructure to support so much growth, and that Sacramento is running roughshod over local control. Those arguments animate the resistance in the cities now being sued, and they are likely to shape the court fights ahead. The state counters that the vast majority of jurisdictions have managed to comply, and that a handful of holdouts should not be allowed to opt out of a statewide crisis.

Why it matters

California's housing shortage is at the root of its affordability and homelessness crises, and the fight over who must build, and where, is one of the defining battles in state politics. For Southern California, where the region's cities are assigned some of the largest housing targets in the state, the message from Sacramento is unambiguous: adopt a plan, or answer for it in court. The lawsuits will test how far the state can go in overriding local reluctance, and whether the threat of penalties is enough to turn plans on paper into homes on the ground.