CA AB1275

Extends the timeline for the California Department of Housing and Community Development to determine regional housing needs from 2 years to 3 years prior to scheduled housing element revisions, with phased implementation varying by region (26-38 months depending on the council of governments and revision cycle)

Changes how subregional housing allocations are calculated, basing them on each subregion's share of the current adopted final regional housing need allocation plan rather than the distribution of households in the regional transportation plan

Requires councils of governments to consider the development pattern set forth in the region's sustainable communities strategy when developing methodology for allocating regional housing needs

Modifies the relationship between housing allocation plans and sustainable communities strategies, requiring plans to be "informed by" rather than "consistent with" the development patterns in sustainable communities strategies

Imposes a state-mandated local program with potential reimbursement for costs incurred by local agencies in implementing the new requirements