Local zoning · Ione

Ione — Parking

Q: How many parking spaces does a single‑family home in Ione need?

A standard single‑family home must provide 2 garage spaces per dwelling unit as the baseline in Table 17.40.050‑1; conversions that remove a garage must replace equivalent parking to meet the table unless the work is part of an ADU conversion with applicable ADU exemptions. See § 17.40.050 and § 17.40.040(H)(1) for details.

Q: What are the minimum stall and aisle dimensions Ione requires for new parking lots?

Outdoor stalls must be at least 9 ft × 18 ft (10×20 ft if indoors or obstructed). Aisles: 12 ft (parallel/≤40°), 17 ft (40–70°), 23 ft (70–90°). Also observe grade limit 7% and vertical clearance requirements. See § 17.40.040(B–E) .

Q: Do ADUs require parking in Ione?

Yes, typically one parking space per ADU or per bedroom, whichever is less , but the code lists exemptions (e.g., ADU within 1/2 mile of transit, ADU inside the downtown residential overlay, where on‑street permits aren't offered, or if a car‑share is within one block). ADU parking may be tandem or on existing driveways and can be located in setback areas under the ADU rules. See § 17.112.030(G) .

Q: What if I propose parking on another lot rather than on my parcel?

The City allows required off‑street parking for nonresidential uses on a separate lot if the lot is within 500 feet of the front entrance and the parcel is under the same ownership or under an approved long‑term lease; the Planning Commission must be satisfied with proof of the lease/arrangement ( § 17.40.080(A)(4) ).

Q: Does the downtown overlay change parking rules?

Yes — the Downtown Residential Overlay (DR) establishes its own parking standard: new single‑family dwellings in the DR need one off‑street space per 1,000 sq.ft. of primary structure (or fractional portion); other uses default to Chapter 17.40 rules; existing units without off‑street parking remain conforming ( § 17.28.030(E) ).

Parking under the Ione local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

This page summarizes how the City of Ione regulates parking under the local zoning code (Title 17). It pulls the City’s off-street parking layout and sizing rules, the numerical parking table for common uses, special rules that apply to ADUs, and overlay/district-specific parking rules so applicants can plan parking, loading, and driveway design. See the City’s core zoning rules at Ione Zoning for context.(/us/california/ione/zoning) All quoted requirements below are from the Ione Zoning Code (Title 17).

Important cross-links (first natural mention of each topic below):

“parking” links to Ione Development Standards.(/us/california/ione/development-standards)
“setbacks/development standards” links to Ione Development Standards.(/us/california/ione/development-standards)
“design review” links to Ione Design Review.(/us/california/ione/design-review)
“overlays” links to Ione Overlay Districts.(/us/california/ione/overlay-districts)
“ADUs” links to Ione ADUs.(/us/california/ione/adu)
“California Building Standards Code” (Title 24) links to Building Codes.(/us/california/building-codes)
“Ione Zoning” above links to the city zoning overview.(/us/california/ione/zoning)

Key rules and standards (what the ordinance actually says)

General layout and minimum parking stall, aisle, grade and clearance requirements are spelled out in § 17.40.040 and explained in the Chapter 17.40 permit/design sections (including plan check requirements) . Key items include:
- Outdoor parking stall minimum: 9 ft × 18 ft; indoor / obstructed-space minimum: 10 ft × 20 ft (§ 17.40.040(B)) .
- Parking aisle minimums: 12 ft (parallel/≤40°), 17 ft (40–70°), 23 ft (70–90°) (§ 17.40.040(C)) .
- Maximum grade for parking stalls/aisles: 7% (§ 17.40.040(D)) .
- Vertical clearance: 8 ft for parking stalls/aisles; 15 ft for loading berths/access (§ 17.40.040(E)) .
- Required parking, loading, and aisles may not be located in the street right-of-way (§ 17.40.040(A)) .
- Conversion of a garage for a single-family home is prohibited unless equivalent parking is provided per the parking table (§ 17.40.040(H)(1)) .
The City sets numeric parking rates by use in Table 17.40.050-1 (Parking Requirements by Land Use) and the rules for rounding and calculation are in § 17.40.050. Examples drawn from that table include:
- Single‑family & two‑family dwelling: 2 garage spaces / dwelling unit (§ 17.40.050; Table 17.40.050-1) .
- Multifamily: e.g., 2 spaces/unit for studio–two‑bedroom; 2 spaces/unit for three+ bedroom units (see table) (§ 17.40.050 Table) .
- Retail: 1 space / 300 sq.ft. (§ 17.40.050 Table) .
- Eating & drinking: 1 space / 4 seats (§ 17.40.050 Table) .
- The table covers a broad set of uses—refer to § 17.40.050 for the full list and rounding rules .
Loading: minimum loading berth sizing and counts are required for larger commercial/industrial buildings (minimum one loading berth for buildings > 5,000 sq.ft., plus one additional per additional 20,000 sq.ft.); loading berth dimensions and screening requirements are specified (e.g., berth 12×30 ft minimum in some sections; alternate specific dimensions appear for certain berth standards) — see § 17.40.040 and § 17.40.080 for berth dimensions, counts, location and screening rules .
Off‑site parking distance / ownership: If required off‑street parking is provided on a separate lot, the parking lot must be within 500 feet of the building’s front entrance and be under common ownership or long‑term lease, with proof to the Planning Commission (§ 17.40.080( A.4)) .
Driveways / driveway standards: residential driveways must be minimum 20 ft in length and width, with an impervious surface; driveways for secondary dwelling units (ADUs) may be minimum 10 ft width subject to fire chief approval; driveway siting rules at intersections and setbacks are in § 17.40.080 .
Compact car spaces and special dimensions: compact car parking may be 8 ft × 16 ft, and aisle widths can be reduced in compact-only sections (see § 17.40.080(C)) .
ADU parking: The ADU rules in § 17.112.030 (and related ADU provisions) require a minimum of one parking space per ADU or per bedroom, whichever is less; those spaces can be tandem or on existing driveways and may be allowed within front setbacks under specified conditions. The Code also lists ADUs that are exempt from parking (e.g., ADU within 1/2 mile of transit; ADU within downtown residential overlay) (§ 17.112.030 (G) and related sections) .
Downtown Residential Overlay (DR): the DR overlay adds tailored parking rules: new single‑family dwellings in DR must provide at least one off‑street parking space per 1,000 sq.ft. of primary structure (or fraction); other uses follow Chapter 17.40 standards; existing units without off‑street parking in the DR are conforming (Table 17.28.030‑1 and § 17.28.030(E)) .
Variances / reductions: the City can modify off‑street parking requirements via variance processes, but a variance cannot reduce required parking to less than 80% of the otherwise applicable requirement unless specific findings are made; standards for findings are in § 17.10.070 (§ 17.10.070(B)(5)) .
Plan check / permits: new parking lots or modifications that alter layout or number of stalls require plan check and permits under § 17.40.030 and 17.10.020 (plan check) .
Relationship to building (Title 24) accessibility: the Zoning Code defers to the California Building Standards Code for accessible parking sizing and signage (accessible parking dimensions and signage are addressed in the Building Code) — see the City-adopted building code (Title 24) for the accessibility specifics (e.g., accessible stall sizes, van-accessible stalls) .

District-by-district (decision‑relevant, Ione‑specific)

Below are the districts where the zoning code states or implies different parking expectations. For each district I quote the ordinance purpose/character and call out the parking implications. All district names and standards below are from Title 17.

A (Agricultural)

Purpose / typical uses: agricultural/open‑space uses and very low intensity residential. Parking expectations follow Chapter 17.40; large agricultural buildings default to industrial/warehouse parking metrics if applicable. See § 17.22.040 for development standards that apply across residential and agricultural districts.

R-1a, R-1b, R-1c (Single‑family residential variants)

Purpose / typical uses: single‑family dwellings; differing front/side/rear setback requirements are listed in Table 17.22.040‑1 and § 17.22.040. Parking for single‑family is 2 garage spaces per unit per Table 17.40.050‑1; conversions of garages must preserve equivalent parking (§ 17.40.050; § 17.40.040(H)(1)) .

R-2, R-3, R-4 (Higher-density residential)

Purpose / typical uses: duplexes, multifamily; multifamily-specific standards are in Chapter 17.114. Multifamily parking rates are set in Table 17.40.050‑1 (e.g., 2 spaces/unit for many unit types); multifamily projects must comply with Chapter 17.114 as well (§ 17.114.030). .

MP (Mobile Home Park)

Purpose / typical uses: mobile home communities. The code requires two parking spaces per mobile home site, paved roads and a minimum curb‑to‑curb internal road width of 25 ft, increased for curb parking (17.22.040 notes / MP rules) .

C‑T, C‑1, C‑2, C‑3 (Commercial / Central Business)

Purpose / typical uses: pedestrian‑oriented retail and office (C‑T/C‑2) versus heavier commercial uses (C‑3). The allowed uses table and the requirement that sites be “auto‑accommodating” with sufficient parking and loading areas are in § 17.24.030; numeric requirements in Table 17.40.050‑1 apply (retail 1/300 sf, eating/drinking 1/4 seats, etc.) .

B‑P (Business‑Professional)

Purpose / typical uses: offices and professional services. Parking rates for offices are 1 space / 300 sq.ft. in Table 17.40.050‑1 (§ 17.40.050).

M‑1, M‑2 (Manufacturing / Industrial)

Purpose / typical uses: industrial and manufacturing. The code says development should be auto‑accommodating with sufficient and clearly defined parking and loading areas; loading berth minimums and truck parking screening apply (see § 17.40.040 and § 17.40.080 for loading berth counts, dimensions, and screening) .

Downtown Residential Overlay (DR)

Purpose: accommodate downtown infill/residential pattern with relaxed setbacks and tailored standards. Parking in the DR is different: new single‑family dwellings provide at least one off‑street space per 1,000 sq.ft. of primary structure; other uses follow Chapter 17.40; existing dwellings without off‑street parking are considered conforming (Table 17.28.030‑1; § 17.28.030(E)) .

(If your site lies in a specific planned development or specific plan area, the specific plan may supply more restrictive or superseding parking requirements — see the applicable specific plan text; where specific plan standards control, they supersede standard zoning per § 17.26 language in Title 17. Not found in the retrieved materials: the text/number of Section 17.26 for a given SP — verify with the jurisdiction.)

Quick reference table (most decision‑relevant standards)

Topic	Requirement / Rule (plain)	Code Reference
Outdoor parking stall size	9 ft × 18 ft minimum	§ 17.40.040(B)
Indoor / obstructed stall size	10 ft × 20 ft	§ 17.40.040(B)
Parking aisle widths	12 ft / 17 ft / 23 ft depending on angle	§ 17.40.040(C)
Max grade	7%	§ 17.40.040(D)
Vertical clearance	8 ft (parking); 15 ft (loading)	§ 17.40.040(E)
Loading berths (count)	1 berth for >5,000 sq.ft. + 1 per 20,000 sq.ft.	§ 17.40.080(A)(5)
Off‑site parking	Must be within 500 ft; common ownership/lease required	§ 17.40.080(A)(4)
ADU parking	1 space per ADU or per bedroom, whichever less; may be tandem or on driveway; parking exemptions available (transit, DR, carshare, etc.)	§ 17.112.030(G)
Residential base rate	Single‑family: 2 garage spaces/unit; Multifamily: see Table	§ 17.40.050; Table 17.40.050‑1
Variance limit on parking reduction	Cannot reduce below 80% of required spaces unless findings made	§ 17.10.070(B)(5)
Compact space size	8 ft × 16 ft (compact)	§ 17.40.080(C)
Plan check needed when	New parking lots or changes that alter layout/number of stalls	§ 17.40.030
Accessibility / signage	See City‑adopted California Building Standards Code (Title 24) for accessible parking sizing/signage	California Building Standards Code (Title 24)

Checklist (what an applicant must satisfy before or with submittal)

Use the correct parking rate from Table 17.40.050‑1 and show calculations and rounding per § 17.40.050 .
Show stall dimensions, aisle widths, grades and vertical clearances that meet § 17.40.040 and § 17.40.080 (stall size, aisle widths, grade ≤7%, clearance) .
Include loading berths sized and counted per § 17.40.080(A)(5) if building area exceeds thresholds; show screening and location (rear preferred) .
If providing parking off‑site, include deed/lease showing ownership or long‑term maintenance and confirm lot is within 500 ft of front entrance per § 17.40.080(A)(4) .
For ADUs, document parking or statutory exemption status and follow § 17.112.030(G) (tandem permitted; driveway/ setback exceptions) .
Provide plan‑check-level parking lot design if stall count/layout changes (§ 17.40.030); minor repairs/resurfacing that do not change stall count are exempt from plan check (§ 17.40.030(C)) .
Confirm accessibility stall sizing and signage comply with the City‑adopted California Building Standards Code (Title 24) (accessible stall dimensions and signage) .
If requesting a variance to reduce parking, prepare findings addressing special circumstances and ensure reduction does not go below 80% without qualifying findings (§ 17.10.070(B)(5)) .

Risks & Ambiguities

Issue	Why it matters	What to verify
Bicycle parking requirements	Bicycle parking rules are not present (or not located) in the returned excerpts — missing guidance can delay approval if the planner expects bicycle parking.	Bicycle parking standards: Not found in retrieved materials. Verify with the City whether Chapter 17 contains a bicycle parking table or if the City uses another policy. Verify with planning staff.
Full content of Table 17.40.050‑1 for specialty uses	The table was located, but some detailed specialty‑use rows may be lengthy and project‑specific (e.g., recreational, institutional).	Check the full Table 17.40.050‑1 in § 17.40.050 in the adopted Title 17 to confirm your specific land‑use row and any notes about seats, gross area, or special rounding rules .
Off‑site parking paperwork	The code requires proof of lease/ownership for off‑site parking within 500 ft, but the acceptable lease length/format is not specified.	Confirm with planning staff what lease term and recordation are acceptable (§ 17.40.080(A)(4)) .
ADU exceptions & historic resources	ADU parking exemptions reference transit proximity and historic overlays; applicability can be parcel‑specific.	Verify if your parcel meets the 1/2 mile transit test or downtown overlay boundaries and whether any historic designation applies (§ 17.112.030(G)) .
Intersection/driveway waivers	Driveway location rules give a waiver if the driveway is ≥75 ft from the nearest cross street — site geometry may make compliance ambiguous.	Verify driveway siting with Public Works / City Engineer and document any findings per § 17.40.080(B)(3) .

Plain‑English summary

Ione’s zoning code requires off‑street parking to meet the numeric rates in Table 17.40.050‑1 and the dimensional/layout rules in Chapter 17.40 (stall sizes, aisle widths, grades, clearances, loading berths, and plan‑check requirements). ADUs have a limited, more flexible parking rule (one space per ADU or bedroom, with exemptions) and downtown overlay parcels get special rules. Variances can reduce parking but generally not below 80% of the required amount unless strict findings are met. See the City’s ADU page for ADU‑specific flexibility.(/us/california/ione/adu)

Information Gaps

Bicycle parking standards (rack counts, dimensions, long‑term vs. short‑term) — Not found in retrieved materials.
Complete wording/footnotes for every row of Table 17.40.050‑1 (some rows were visible; verify any special rules that apply to your use) — partial content available but confirm full table in the ordinance text (§ 17.40.050) .
Exact administrative expectations for off‑site parking lease length and recordation — Not specified in retrieved materials; verify with the Planning Department (§ 17.40.080(A)(4)) .

Source References

Title 17 — Zoning Code (City of Ione). See Title 17 (general introduction and purpose). § 17.04.020
Parking design & layout requirements: § 17.40.040 (General parking requirements)
Parking plan permits and plan check: § 17.40.030 (Plan check / permit requirements)
Parking table and numeric rates: § 17.40.050 and Table 17.40.050‑1 (Parking Requirements by Land Use)
Surface parking design, off‑site parking distance and loading berth rules: § 17.40.080
ADU parking rules & exemptions: § 17.112.030 (G) and related ADU sections (ADU review process § 17.112.050)
Downtown Residential Overlay parking standards: Table 17.28.030‑1 and § 17.28.030(E)
Variance authority and limits on parking reductions: § 17.10.070(B)(5)
District descriptions and requirement to be auto‑accommodating (commercial/industrial): § 17.24.030
City‑adopted building code (accessibility, Title 24): California Building Standards / Building Code (see local adoption for accessible parking dimensions and signs)

Sources

Retrieved passages

Ione Zoning Code (Chapter 17.36) High relevance
Ione Zoning Code (Section 17.112.030.) High relevance
Ione Zoning Code (Section 17.10.020) High relevance
Ione Zoning Code (Section 17.112.030.) Medium relevance
CBC § 030 (section shall) Medium relevance
Ione Zoning Code (section and) Medium relevance
Ione Zoning Code (Title 17) Medium relevance
Ione Zoning Code (Section 17.26.020) Medium relevance
Ione Zoning Code (chapter shall) High relevance
Ione Zoning Code (section of) Medium relevance
CBC § 528 Medium relevance

Cited sections

Official Ione code library

Frequently asked questions

How many parking spaces does a single‑family home in Ione need?

A standard single‑family home must provide 2 garage spaces per dwelling unit as the baseline in Table 17.40.050‑1; conversions that remove a garage must replace equivalent parking to meet the table unless the work is part of an ADU conversion with applicable ADU exemptions. See § 17.40.050 and § 17.40.040(H)(1) for details.

What are the minimum stall and aisle dimensions Ione requires for new parking lots?

Outdoor stalls must be at least 9 ft × 18 ft (10×20 ft if indoors or obstructed). Aisles: 12 ft (parallel/≤40°), 17 ft (40–70°), 23 ft (70–90°). Also observe grade limit 7% and vertical clearance requirements. See § 17.40.040(B–E).

Do ADUs require parking in Ione?

Yes, typically one parking space per ADU or per bedroom, whichever is less, but the code lists exemptions (e.g., ADU within 1/2 mile of transit, ADU inside the downtown residential overlay, where on‑street permits aren't offered, or if a car‑share is within one block). ADU parking may be tandem or on existing driveways and can be located in setback areas under the ADU rules. See § 17.112.030(G).

Can I put required parking in the front setback or in tandem in Ione?

For ADUs, the code explicitly allows off‑street parking within the front yard setback set back a minimum of 10 ft from the street or via tandem parking unless specific findings preclude it under § 17.112.030(G)(1). For other uses, required parking generally may not be located in the public right‑of‑way and there are limits on using front yards for required off‑street parking per § 17.40.040 — consult the specific use rules.

What if I propose parking on another lot rather than on my parcel?

The City allows required off‑street parking for nonresidential uses on a separate lot if the lot is within 500 feet of the front entrance and the parcel is under the same ownership or under an approved long‑term lease; the Planning Commission must be satisfied with proof of the lease/arrangement (§ 17.40.080(A)(4)).

Are there shortcuts to reduce parking requirements in Ione (variances or reductions)?

Yes, a variance may modify off‑street parking requirements, but a variance cannot reduce the required parking to less than 80% of what the zoning normally requires without satisfying the variance findings; the findings are set out in § 17.10.070(B). Plan on demonstrating that reduced parking still meets demand and safety/turning needs.

Does the downtown overlay change parking rules?

Yes — the Downtown Residential Overlay (DR) establishes its own parking standard: new single‑family dwellings in the DR need one off‑street space per 1,000 sq.ft. of primary structure (or fractional portion); other uses default to Chapter 17.40 rules; existing units without off‑street parking remain conforming (§ 17.28.030(E)).

Where do I find requirements for accessible parking (van spaces, signage)?

Accessible parking dimensions, signing and the number of accessible spaces are governed by the adopted California Building Standards Code (Title 24) and accessibility provisions; the zoning code defers to the building code for detailed accessible parking standards. See the City‑adopted building code for the exact dimensions and signage rules.

Are bicycle parking requirements stated in the Ione zoning code?

Bicycle parking standards are not located in the excerpts we retrieved. Not found in retrieved materials. Verify with the City whether bicycle parking requirements are in another chapter, municipal standard, or a specific plan. (If the project is a commercial or multifamily development planners often expect bicycle parking — confirm early.)

Do parking lot resurfacing or striping projects require plan check?

Routine repairs, resurfacing and restriping that do not change the number or configuration of stalls are exempt from plan check per the minor activity list; any change that alters count or configuration will require plan check under § 17.40.030.

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