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Placer County adopts 2025 code amendments easing ADU porch limits, advancing movable tiny-home rules
Summary
The Board of Supervisors unanimously adopted a 23-item 2025 code amendment package that removes a 25% unenclosed porch limit for accessory dwelling units, creates standards for movable tiny homes and electrified fences in nonresidential zones, and adds a narrow parcel‑split exception in agricultural zones; staff and public speakers flagged implementation issues for snow loads and tiny‑home manufacturers.
The Placer County Board of Supervisors unanimously adopted a 2025 code amendment package on Feb. 17 that county planning staff said fixes code errors, clarifies processes and updates standards for accessory dwelling units (ADUs), movable tiny homes and several other land‑use provisions.
Senior planner Lucy Rollins told the board the package includes 23 amendments. "One change removes the 25% limitation for unenclosed porches on ADUs so property owners can maximize interior living space while retaining a porch," Rollins said. The package also adds standards for electrified and barbed‑wire fencing limited to commercial and industrial zones and requires communication efforts with adjacent owners when property owners seek a 12‑foot fence/retaining‑wall combination.
The board packet and Rollins' presentation emphasized changes to chapter 17 that include a minimum‑parcel‑size deviation allowing a split when an agricultural, farm or forest parcel…
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