In San Diego County, California, the county's Inclusionary Housing Ordinance took effect on October 22, 2026. The ordinance, adopted by the Board of Supervisors in a 4-1 vote on June 24, 2026, applies
The ordinance applies to new housing developments with 10 or more units; projects of nine or fewer units are exempt, and density bonus units and accessory dwelling units do not count toward the threshold. For-sale developments must choose one of three options: 5% of units at very-low income levels (50% of Area Median Income), 10% at low income levels (80% of AMI), or 15% at moderate income levels (120% of AMI). Rental developments must select from 5% of units at extremely-low income levels (30% of AMI), 5% at very-low income levels (50% of AMI), or 10% at low income levels (80% of AMI). General Plan Amendment projects face the highest requirement, 20% of units at low income levels. Any project submitted to the county before October 22, 2026, is grandfathered under the previous regulations.
The ordinance also establishes alternative compliance options in a prioritized hierarchy: donating land to the county in specified areas for future affordable housing ranks highest, followed by options including up to five on-site accessory dwelling units sold as condominiums (satisfying up to half the requirement), offsite development, and in-lieu fees paid into a dedicated county fund, which depending on project type can satisfy up to 50% or 100% of the requirement; developers must demonstrate why higher-priority options are not feasible before moving down the list. County staff told the Board of Supervisors that the ordinance could produce an estimated 15 to 60 deed-restricted affordable units per year. Under California's Regional Housing Needs Assessment process, San Diego County must plan for 6,700 new homes in unincorporated communities between 2021 and 2029, of which 2,800 must be affordable to low- and very-low-income households earning less than 80% of Area Median Income.
来源：圣迭戈县《包容性住房条例》条文与县规划文件汇编（县政府文件，条例经县监事会6月24日4比1通过、10月22日施行） https://www.sd-cash-buyer.com/blog/san-diego-county-inclusionary-housing-ordinance-october-22-2026-affordable-housing-mandate-unincorporated-areas/
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Source: San Diego County Board of Supervisors
Published by GSM · USA (original Chinese edition)
Photo: 圣迭戈县政府中心（资料图）。（Wikimedia Commons）|The San Diego County Administration Center (file photo). (Wikimedia Commons)
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