California ADU rules · Riverside County
Can I Build an ADU in Jurupa Valley?
Yes — you can build an ADU in Jurupa Valley. California's statewide ADU law requires every city, including Jurupa Valley, to approve a qualifying accessory dwelling unit by right, plus a junior ADU (JADU) on a single-family lot. What varies city to city are the local specifics below.
Can you build one?
ADUs allowed
CA state lawYes — by right
ADUs and JADUs are allowed by right in all residential and mixed-use zones; ministerial approval, no hearing.
Units on a single-family lot
CA state law1 ADU + 1 JADU
At least one ADU and one JADU per single-family lot (a conversion ADU may also be possible).
Units on a multifamily lot
Local ruleup to 8 detached or number equal to existing units (whichever is fewer); up to 2 detached on lot with proposed multifamily; conversions up to 25% of units
Local cap of 8 detached ADUs or number of existing units, whichever is fewer; up to 2 detached on proposed multifamily lots.
Junior ADU (JADU)
Local ruleAllowed
JADUs allowed within existing or proposed single-family dwelling, including attached garages.
Size & height
Max detached ADU size
Local rule1,000 sq ft
Detached ADU max 850 sq ft (studio/1-bed), 1,000 sq ft (2+ bedrooms).
Max attached ADU size
Local rule50% of primary, or 850 (studio/1-bed), or 1,000 (2+ beds if with new primary)
Attached ADU max 50% of primary dwelling, or 850/1,000 sq ft if with new primary.
Guaranteed minimum size
CA state law800 sq ft
An 800 sq ft ADU must be allowed regardless of FAR/lot-coverage caps; a city also cannot cap an attached ADU below 850 sq ft (1,000 for 2+ bedrooms).
Max JADU size
Local rule500 sq ft
JADU max size 500 sq ft; min size 220 sq ft.
Max height
CA state law16 ft
16 ft baseline; cities must allow 18 ft within ½ mi of a major transit stop or where the primary dwelling is two-story, and 20 ft on a lot with a multistory multifamily building.
Setbacks
Side setback
CA state law4 ft
A city cannot require more than 4 ft side or rear setback; conversions of existing structures are exempt.
Rear setback
CA state law4 ft
Front setback
Local rulestandard front setback unless it precludes an 800 sq ft, 16 ft tall ADU with 4 ft side/rear setbacks
Front setback applies unless it blocks a code-minimum ADU.
Separation from main house
CA state lawNone required
No statewide separation requirement between the ADU and the primary dwelling.
Parking
Parking required
Local ruleUp to 1 space
1 off-street space per ADU unless exempt; no parking required for JADUs.
Transit parking exemption
CA state lawYes — no parking required near transit & for conversions
No parking may be required within ½ mi walking distance of transit, in a historic district, for an ADU within an existing structure, within one block of car-share, or in certain permit-parking areas.
Garage-conversion replacement parking
Local ruleNot required
No replacement parking required for garage/carport conversion.
Approval, timeline & cost
Approval path
CA state lawMinisterial (by right)
No public hearing or discretionary design review for a qualifying ADU.
Approval timeline
CA state law60 days
The agency must act within 60 days of a complete application — and the ADU is deemed approved if it does not.
Owner-occupancy
Local ruleOnly for a JADU
Owner occupancy required for JADUs only.
Impact-fee waiver
CA state lawWaived under 750 sq ft
An ADU of 750 sq ft or less pays no impact fees (the 750 sq ft threshold itself is exempt under § 66311.5); larger ADUs pay fees proportional to the primary dwelling. JADUs (≤ 500 sq ft) are exempt.
Permits required
CA state lawBuilding permit
Only a ministerial building permit — no conditional use permit or discretionary design review for a qualifying ADU.
Jurupa Valley-specific factors that can change the answer
State law sets the floor, but these local conditions often decide whether a specific parcel works.
Sprinkler requirement
ADUs require sprinklers if primary dwelling does
Historic resource compliance
ADUs impacting historic resources must comply with Secretary of the Interior’s Standards and local historic requirements
Jurupa Valley caps detached ADUs at 1,000 sq ft (2+ bedrooms) and 850 sq ft (studio/1-bed), and limits multifamily lots to 8 detached ADUs or the number of existing units. Height and parking rules have local nuances, and JADUs require owner occupancy.
Frequently asked questions
Can I build an ADU in Jurupa Valley?
Yes. California's statewide ADU law requires Jurupa Valley to approve a qualifying accessory dwelling unit ministerial (by right), plus a junior ADU (JADU) on a single-family lot.
How big can an ADU be in Jurupa Valley?
A detached ADU of at least 1,000 sq ft must be allowed, and an ADU of 800 sq ft can never be zoned out by floor-area or lot-coverage limits. A JADU can be up to 500 sq ft.
What are the setback requirements for an ADU in Jurupa Valley?
Side and rear setbacks are limited to 4 ft. standard front setback unless it precludes an 800 sq ft, 16 ft tall ADU with 4 ft side/rear setbacks.
Is parking required for an ADU in Jurupa Valley?
Up to 1 space. No parking can be required within ½ mile of transit, for conversions, or for units inside the primary home. When a garage is converted, replacement parking is not required.
How long does ADU approval take in Jurupa Valley?
A complete application must be acted on within 60 days, with ministerial (by right) — no public hearing or discretionary design review for a qualifying ADU.
Do I have to live on the property to build an ADU in Jurupa Valley?
Owner-occupancy: only for a jadu. ADUs under 750 sq ft are also exempt from impact fees.
Sources
- JVMC § 9.240.290 (Ord. No. 2021-09, 2021-17)
- JVMC § 9.240.290(C)(2)(b)-(d), (E)(2)
- JVMC § 9.240.290(F)(1)-(2)
- JVMC § 9.240.290(E)(3)(a)
- JVMC § 9.240.290(F)(2)
- JVMC § 9.240.290(E)(3)(c)
- JVMC § 9.240.290(E)(4), (F)(7)
- JVMC § 9.240.290(E)(3)(i)
- JVMC § 9.240.290(G)(3)
- JVMC § 9.240.290(E)(3)(g)
- JVMC § 9.240.290(E)(3)(h)
- Cal. Gov. Code §§ 66310–66342 (ADU Law)
- HCD 2025 Accessory Dwelling Unit Handbook
- Cal. Gov. Code § 66317 (ministerial approval, 60-day deadline)
- Cal. Gov. Code § 66323 (by-right ADU/JADU, 800 sq ft, 4-ft setbacks)
- Cal. Gov. Code § 66321 (size minimums & height)
- Cal. Gov. Code § 66322 (ADU parking; § 66334 covers JADU parking)
- Cal. Gov. Code § 66311.5 (impact fees: none for an ADU ≤ 750 sq ft or JADU ≤ 500 sq ft)
Last updated 2026-06-25. This is an AI-assisted summary of Jurupa Valley's ADU rules, drawn from its published ordinance and California ADU law — general information, not legal advice, and it may be incomplete or out of date. Verify the controlling rule for your specific parcel with Jurupa Valley Planning before relying on it.
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