Pico Rivera, CA Accessory Structures: ADU Rules (2026)
ADU rules in Pico Rivera, CA, also called accessory dwelling unit regulations or granny flat ordinances, cover setbacks, owner-occupancy, parking, and permit requirements.
Key Facts
- Max ADU size
- 1,000 sq ft detached/attached
- Max JADU size
- 500 sq ft
- Standard height limit
- 16 feet, one story
- Near-transit height
- Up to 20 feet
- Side/rear setback
- At least 4 feet
- Parking requirement
- 1 space per ADU or bedroom
Summary
Section 18.22.030 of the Pico Rivera Municipal Code caps a detached or attached accessory dwelling unit at 1,000 square feet and a junior ADU at 500 square feet, limits height to 16 feet, sets 4-foot side and rear setbacks, and requires one parking space per unit or bedroom.
Location. ... An accessory dwelling unit is permitted on any residentially zoned property if a single-family dwelling or multifamily dwelling exists on the lot or will be constructed in conjunction with the accessory dwelling unit. ... Maximum Size. a. Accessory Dwelling Unit. The maximum size of a detached or attached accessory dwelling unit is 1,000 square feet. b. Junior Accessory Dwelling Unit. The maximum size within an existing or proposed single-family dwelling is 500 square feet. ... ... a. A detached ADU created on a lot with an existing or proposed single-family or multifamily dwelling unit may not exceed 16 feet in height and one story or as otherwise provided in this Title. ... ... a. Detached and attached accessory dwelling units shall meet the minimum side and rear yard setbacks of at least four feet. ... ... a. One parking space per ADU or per bedroom, whichever is less. These spaces may be provided as tandem parking on a legally permitted driveway.
Full Breakdown
Pico Rivera Municipal Code Section 18.22.030 allows an accessory dwelling unit on any residentially zoned property with an existing or proposed single-family or multifamily dwelling, either attached, detached, or built within the living area of the existing home; a junior accessory dwelling unit (JADU) may only be created within an existing or proposed single-family home, including inside an attached garage. The maximum size of a detached or attached ADU is 1,000 square feet, while a JADU is capped at 500 square feet, and an attached ADU cannot exceed 50 percent of the existing or proposed primary dwelling unless that limit would block an 800-square-foot ADU.
Height is capped at 16 feet and one story for a standard detached ADU, rising to 18 feet (or 20 feet to match a matching roof pitch) within a half-mile of a major transit stop, and to 24 feet and two stories for an ADU attached to the primary dwelling, whichever is lower than the underlying zone's limit for the primary house. Detached and attached ADUs must keep at least a 4-foot side and rear setback, and an attached ADU must match the primary residence's front setback.
Parking is limited to one space per ADU or per bedroom, whichever is fewer, sized at least 9 feet wide and 20 feet long and allowed as tandem parking on a legal driveway, but that requirement is waived entirely if the ADU sits within a half-mile of transit, in a historic district, within the primary residence or an accessory structure, or where street parking permits are required but unavailable to the ADU occupant.
Violations & Fines
An accessory dwelling unit built over the 1,000-square-foot (or 500-square-foot JADU) size cap, taller than the height limit for its type, or without the required setbacks and parking under Section 18.22.030 is a zoning violation the Community and Economic Development Department can require be brought into compliance before final building permit sign-off or occupancy.
Frequently Asked Questions
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Sources & Official References
Other rules in Pico Rivera
How Pico Rivera compares: Easiest Cities to Build an ADU·California rules heatmap·Compare Pico Rivera to another location·View the California accessory structures overview
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ADU Rules in Nearby Cities
How other cities in Los Angeles County handle adu rules.