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

California lawmakers continue expanding middle housing development opportunities through recent legislative updates to small-site residential projects.

The Starter Home Revitalization Act, originally designed to streamline approval for projects with up to 10 units on 10 parcels, has been amended by SB 684 and SB 1123 to include both multi-family and single-family zoned sites.

These changes build upon earlier housing reforms including SB 9, which allowed property owners to split single-family lots and build duplexes, and various ADU liberalization measures aimed at increasing housing density in established neighborhoods.

New provisions under AB 130 introduce a "remainder parcel" option that extends beyond the traditional 10-lot limit, giving developers additional flexibility for existing uses, utilities, and other site functions.

However, the legislation also imposes new restrictions on newly created parcels, preventing their sale, lease, or financing unless specific building requirements are met.

Property developers may find these post-subdivision restrictions complicate project financing and development phasing, potentially affecting the viability of smaller residential projects.

The reforms represent California's ongoing effort to address the housing shortage by encouraging middle housing options like duplexes, triplexes, and townhomes that provide alternatives between single-family homes and large apartment complexes.

For homeowners, these changes may create new opportunities to subdivide properties or add housing units, while developers gain streamlined ministerial approval processes for qualifying small-scale residential projects.