CA SB10

Authorizes local governments to adopt ordinances zoning parcels for up to 10 residential units per parcel in transit-rich areas or urban infill sites, with height specified by the local government.

Local governments may not adopt such ordinances on or after January 1, 2029, though ordinances adopted before that date may remain in effect beyond it.

Requires ordinances to clearly demarcate affected areas, include a declaration of adoption under this section, and make a finding that increased density is consistent with affirmatively furthering fair housing.

Prohibits ordinances that supersede local initiative restrictions from taking effect unless adopted by a two-thirds vote of the legislative body; does not apply to parcels in very high fire hazard zones or those designated for open-space or park use.

Prohibits residential or mixed-use projects with more than 10 units on parcels zoned under this section from being approved ministerially or exempt from environmental review under the California Environmental Quality Act.