ADUs and JADUs in Rocklin are approved ministerially (no discretionary review or public hearing) under RMC Chapter 17.67, consistent with Cal. Gov. Code §65852.2(b)'s 60-day review mandate. Applicants submit a building-permit application to the Rocklin Building Division (building@rocklin.ca.us) with a dimensioned site plan, floor plans, and Title 24 solar drawings; zoning questions go to the Planning Division (planner@rocklin.ca.us / (916) 625-5160). Rocklin's Permit-Ready ADU Program, adopted in response to AB 1332 (Gov. Code §65852.27), publishes pre-approved ADU plan sets reviewed by the Building Department; complete applications using these plans are targeted for approval within 30 days. An ADU may not be occupied until a Certificate of Occupancy (or Temporary CO) is issued by the Building Division. Address numbers for ADUs are assigned at building-permit issuance.
State law (Gov. Code §65852.2(b)(1)) requires Rocklin to approve or deny a complete ADU application within 60 days, ministerially, without a CEQA hearing. JADU applications follow the same ministerial path under Gov. Code §65852.22. Rocklin's Permit-Ready ADU Program (rocklin.ca.us/permit-ready-adus) implements AB 1332 (Gov. Code §65852.27, requiring local agencies to maintain pre-approved ADU plans) and provides standardized detached, attached, and garage-conversion plans designed by licensed architects/engineers and pre-reviewed by the Rocklin Building Department. JADUs do not require a separate address. Fire-sprinkler requirements follow the California Residential Code; a new ADU does not trigger sprinklers in the primary dwelling unless one was already required. The state ministerial standard means denials must be in writing and cite an objective standard violated.
Constructing, occupying, or converting space into an ADU/JADU without a building permit is a violation of RMC Title 15 (Buildings and Construction) and Chapter 17.67. Enforcement includes stop-work orders, investigation fees, abatement, and exposure to civil penalties under California Health & Safety Code §17995 for unpermitted dwelling units.
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