Victorville, CA Accessory Structures: ADU Rules (2026)
ADU rules in Victorville, CA, also called accessory dwelling unit regulations or granny flat ordinances, cover setbacks, owner-occupancy, parking, and permit requirements.
Key Facts
- Max ADU size (studio/1BR)
- 850 sq ft
- Max ADU size (2+ bedrooms)
- 1,000 sq ft
- Max JADU size
- 500 sq ft
- Min side/rear ADU setback
- 4 ft, all zones
- Max detached ADU height
- 16 ft (18 ft multi-family)
- Application review deadline
- 60 days, ministerial
Summary
Victorville's Development Code caps a new accessory dwelling unit at 850 square feet for a studio or one bedroom and 1,000 square feet for two or more bedrooms, per Table 8-1. Table 8-3 sets a uniform 4-foot side and rear setback in every residential zone and limits a detached ADU to 16 feet in height, 25 feet if attached to the primary home.
Table 8-1: Standards for Dwelling Unit Areas. Accessory Dwelling Unit (ADU)- One bedroom or studio 850 sq. ft. maximum Accessory Dwelling Unit (ADU)- More than one bedroom 1,000 sq. ft. maximum Junior Accessory Dwelling Unit (JADU) 500 sq. ft. maximum. Table 8-3: Accessory Dwelling Unit (ADU) Development Standards. Residential Zoning Districts AE S-R R-1 R-2 R-3 R-4 MDR R-MPD. Maximum quantity of JADU's 1 1 1 0 0 0 1 (1) 1. New ADU Requirements (in ft.) Minimum Side Yard Setback (2) 4 4 4 4 4 4 4 4. Minimum Rear Yard Setback (2) 4 4 4 4 4 4 4 4. Maximum Height (in ft.) (3) Detached (4) 16 16 16 16 (5) 16 (5) 16 (5) 16 (5) 16. Attached 25 25 25 25 25 25 25 25.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 57).
Full Breakdown
Sec. 22, and applies to any lot zoned residential or mixed-use that carries an existing or proposed single-family or multi-family use; junior accessory dwelling units are limited to lots with an existing or proposed single-family use. Applications are reviewed ministerially, meaning the city must approve or deny a complete application within 60 days without discretionary hearings. Table 8-1 caps ADU floor area at 850 square feet for a studio or one-bedroom unit and 1,000 square feet for a unit with more than one bedroom; a JADU is capped at 500 square feet.
Table 8-3 sets development standards separately from the primary dwelling: the maximum quantity of JADUs is one per lot in AE, S-R, R-1, MDR and R-MPD, but zero in R-2, R-3 and R-4, which are multi-family zones without an underlying single-family use. Every zone shares the same 4-foot minimum side and rear yard setback for a new ADU. Height is capped at 16 feet for a detached unit (18 feet in multi-family zone districts for developments over one story) and 25 feet for an ADU attached to the primary dwelling.
Converting an existing accessory structure or garage into an ADU carries no new setback and no height limit, per Table 8-3, Notes 2 and 3, so long as the space being converted already exists.
Violations & Fines
ADU compliance is enforced the same way as any other Development Code standard: through Sec. 1.05.050-1.05.110's administrative citation process, with civil penalties due within 30 days of the citation and a 100% late fee for nonpayment, or through the misdemeanor/infraction track in Sec. 1.04.010, which sets escalating base fines of $100, $200, $400 and $1,000 for repeat violations of the same section.
Frequently Asked Questions
How large can an ADU be in Victorville?
What setback does a new ADU need from my property line?
Can I build a junior ADU in an R-3 zone?
How long does Victorville have to approve my ADU application?
Sources & Official References
Other rules in Victorville
How Victorville compares: Easiest Cities to Build an ADU·California rules heatmap·Compare Victorville to another location·View the California accessory structures overview
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ADU Rules in Nearby Cities
How other cities in San Bernardino County handle adu rules.