Streamlining Middle Housing: The Latest in Small-Site Development Reforms - The National Law Review

Recent legislation broadens the small lot subdivision framework under SB 684 and SB 1123 (previously analyzed here), strengthens SB 9 duplex and lot-split rights, accelerates ministerial permitting timelines, and further liberalizes ADU development.

As we previously reported, SB 79 (signed October 10, 2025) also increases density around transit, including on small parcels in single-family zones.

This alert summarizes the most significant newly enacted state laws affecting small-site residential development.

The Starter Home Revitalization Act — amended and expanded by SB 684 (multi-family zoned sites) and SB 1123 (single-family zoned sites) — continues to evolve through legislative clean-up efforts.