ADU rules in Jurupa Valley, CA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Jurupa Valley Municipal Code Section 9.240.290 (adopted via Ordinance No. 2025-22, effective November 2025) implements California Government Code Sections 66313 et seq. Detached new-construction ADUs are capped at 850 sq ft (or 1,000 sq ft if more than one bedroom), 16 ft height (18-20 ft near transit), with 4-foot side and rear setbacks. JADUs are limited to 500 sq ft within an existing single-family dwelling.
Section 9.240.290 was completely rewritten by Ordinance No. 2025-22 (adopted October 2, 2025) to conform to Senate Bill 477 (effective March 25, 2024) and Senate Bill 1211 (effective January 1, 2025). Definitions in Sections 9.10.465 (ADU) and 9.10.467 (JADU) now cross-reference Government Code Section 66313(a) and 66313(d). One ADU plus one JADU is allowed by-right on any lot with a proposed or existing single-family dwelling. For multifamily lots, up to 25 percent of existing units may be converted to ADUs within non-livable space; up to 8 detached ADUs are allowed on existing multifamily lots and up to 2 on proposed multifamily lots. Statewide ministerial 60-day approval (Gov. Code Section 66317) applies. Recreational trailers, RVs, and motorhomes are expressly prohibited from being used as ADUs.
Building or occupying an ADU without permits, exceeding the 850/1,000 sq ft cap, violating the 16/18 ft height limit, or encroaching past the 4-foot side/rear setbacks subjects the property to stop-work orders, denial of occupancy, and code enforcement abatement under Title 9 Chapter 9.15.
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