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Planning Commission hears overview of 2024–25 housing laws; ADU, SB9 and conversion rules to prompt local code changes

Marin County Airport Land Use Commission; Marin County Planning Commission · November 6, 2025
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

County planning staff summarized roughly a dozen housing law changes — including AB 93's expansion of the Housing Accountability Act, major ADU changes and AB 2243's widening of commercial‑to‑residential conversions — and outlined steps the county must take to align local code and procedures, with some rules already in effect.

Marin County planning staff gave commissioners a walkthrough of recent state housing laws that took effect this year and described how the county expects to respond.

Manny, who led the briefing, said the governor signed 62 housing‑related laws that took effect early this year and the presentation focused on five areas covering about a dozen laws that are most likely to affect county procedures and the development code.

Housing Accountability Act and builders' remedy: Manny said AB 93 expands the Housing Accountability Act (HAA), adding new categories of potential violations for local governments and expressly incorporating builders' remedy protections into HAA. "AB 93 expands the housing accountability act in many ways," Manny said, describing changes to application completeness rules and procedural limits on how jurisdictions can deem an application incomplete.

Accessory Dwelling Units…

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