ADU, SB 9 and additional residential accommodations ordinance update
Riverside County
Summary
The county is overhauling its rules for backyard homes and other additional housing — adding SB 9 units, raising ADU size caps to 1,600 sq ft, and treating mobile homes like regular houses. It goes beyond state minimums, but commissioners worry about parking (state law prevents local parking requirements) and strain on water, sewer, schools and public safety. It now goes to the Board of Supervisors, likely August 25.
At a glance
- Total mentions
- 1
- Last 30 days
- 0
Last discussed Jul 8, 2026.
Impact analysis
More housing units could count toward the county's 40,000-plus-unit regional housing obligation, but commissioners warned infrastructure and service costs may fall on taxpayers if systems get overloaded.
Homeowners wanting to add rental or family housing on their lots, plus renters priced out of traditional housing.
Neighbors concerned about street parking, traffic, and added demand on water, sewer, schools and sheriff services.
Mentions & discussions (1)
Related development
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