St. Helena — Parking

Last reviewed: July 6, 2026

Overview

St. Helena’s Title 17 Zoning Code sets citywide rules for off-street vehicle parking, bicycle parking, and on-site loading, with targeted flexibilities and overlays where downtown context or shared demand supports fewer stalls. Most projects follow the baseline ratios in the parking chapter and the citywide design standards, while some districts impose additional siting and access rules. This page interprets those local rules so you can plan compliant parking as part of your broader zoning, land use, and development standards strategy.

The most important rule: size your on-site stalls by use under the city’s minimum ratios, and then check for overlay exemptions, district-specific siting limits, and eligible reductions before finalizing a site plan per § 17.26.040, § 17.26.060, and § 17.26.050.

What the code covers

• Chapter title: Parking and Loading — Title 17, Chapter 17.26 (purpose, definitions, applicability, minimum ratios by use, parking area and access design, reductions, general provisions, bicycle parking, EV charging stations reference, on-site loading)
• Citywide landscaping and screening that affect parking: § 17.25.050 (parking lot trees, planters, frontage rules)
• Business/industrial and corridor-specific siting rules that affect parking: § 17.18.040 and § 17.17.040
• Overlay with unique parking treatment: Parking Exemption District (PED), § 17.21.030

Applicability and triggers

• Applicability: The parking chapter applies citywide when a building/use is erected, enlarged, its capacity increased, or a nonconforming use changes to a permitted use; existing nonresidential expansions that increase required spaces by 15% or more must add parking for the addition only; required facilities must be in before the certificate of occupancy (§ 17.26.030).
• Counting and unlisted uses: Fractions ≥ 0.5 round up; unlisted uses are set by the Planning Commission using the table as a guide (§ 17.26.040(A)–(B)).

Minimum off-street parking by use (selected)

The table below distills the most common local ratios; use-specific exceptions are in the full code table.

ADU-specific parking: One off-street space per ADU is generally required, with several exemptions (e.g., within ½-mile of transit, in a historic district, in/above an existing structure, on-street permits not offered to ADU occupants, or near car-share); replacement parking is required if you convert a garage (§ 17.22.030(F)(6)). See the city’s ADUs page for a deeper dive.

Bicycle parking (short-term and long-term)

• Applicability: The Planning Commission may require bicycle parking when a use requires 10+ vehicle spaces (§ 17.26.080, opening).
• Short-term (shoppers/visitors): Provide secure bicycle parking equal to 5% of required vehicle spaces, minimum 4 spaces per use, for multi-unit residential/boarding/SRO, all public/semi-public, and most commercial; exemptions include sites in the Parking Exemption District (PED), uses in the CB district, and properties with <10 ft required front setback (§ 17.26.080(A)(1)–(d)). Place racks within 100 ft of the main entrance and outside pedestrian walkways/right-of-way unless an encroachment permit is obtained (§ 17.26.080(A)(2)).
• Design: Anchor to secure two contact points of the frame and a wheel, provide 2 ft by 6 ft per space with specified clearances (§ 17.26.080(A)(3)–(4)). Long-term ratios include: 1/5 dwelling units (multi-unit/ group/SRO), 1 per 25 vehicle spaces (parking structures), and for uses with 25+ FTEs, 1 per 25 required vehicle spaces (§ 17.26.080(B)).

Parking area and access design (citywide)

• Residential garages and driveways: Minimum interior clear dims are 9'×19' (single) and 19'×19' (double); driveways must be 24' long to the garage door (20' with a roll-up) and 10'–20' wide, using pervious materials (§ 17.26.050(A)–(B)).
• Lot layout: Use the city’s angled-parking table for modules and aisles; two-way aisle minimum is 24', one-way 14'; up to 30% of spaces may be compact with specified dimension reductions; include wheel stops for angled/90° stalls; stripe in white; allow limited overhang into landscaping (§ 17.26.050(C)).
• Location and screening: No part of a parking lot may be in a required front or street-side setback; do not design layouts that require backing into a public street (except in residential districts); screen rear-lot parking (>5 spaces) abutting residential with a 6' solid barrier (§ 17.26.050(C)).
• Materials, lighting, accessibility: Durable, dustless surfaces are required; porous pavers may be approved; lighting must meet the city’s standards; accessible stalls follow the California Building Standards Code (§ 17.26.050(C)).
• Access drives serving multifamily/nonresidential: Follow the minimum widths (e.g., nonresidential one-way 16' paved; two-way 25' paved), maintain 14' vertical clearance, avoid any gate or stall within the first 30' of the drive, and design for two-way traffic unless approved otherwise (§ 17.26.050(D)).

Loading and unloading (citywide)

• When required: For nonresidential buildings ≥10,000 sq ft in relevant uses (manufacturing, storage, warehouse, retail, wholesale), provide loading per the gross floor area table (e.g., 1 space for 10k–24,999 sq ft; 2 for 25k–49,999; add 1 per each additional 50k); industrial up to 10k requires 1 (§ 17.26.100(A)).
• Design and placement: Each space must be at least 12'×40'×14' high, located to the rear if feasible, screened, and must function entirely on site (no maneuvers or loading in the right-of-way); striping “loading only” is required; the Planning Commission can waive or modify if appropriate (§ 17.26.100(B)–(E)).

Reductions, alternatives, and special rules

• Parking Exemption District (PED): Projects in the PED have no on-site parking requirement and no in‑lieu fee; existing on-site parking must be maintained. The PED area is generally within the CB district; the city may update this after a downtown parking study (§ 17.21.030). See Overlay Districts.
• Shared parking: Up to a 40% reduction may be approved by the Community Development Director with a parking demand study and a recorded agreement if off-site or cross-property (§ 17.26.060(C), § 17.26.070(B)).
• Transportation demand management (TDM): For commercial/office, a 10% reduction may be granted for on-site TDM features (car-share/vanpool/carpool spaces, showers/lockers, or transit subsidies) (§ 17.26.060(D)).
• Off-site and tandem: Required spaces must be on the same lot or within 300' in a district that allows parking, with a recorded agreement; tandem is allowed in residential districts, and up to 25% of required spaces in commercial/mixed-use districts if no backing onto public streets (§ 17.26.070).
• Density bonus: Residential parking may vary for density bonus projects (§ 17.26.060(B)). See state California housing laws.

District-by-district effects on parking

• Citywide baseline (all base districts)
  • Applies: All zoning districts unless a more specific district/overlay standard is stricter.
  • Core rules: Minimum ratios by use (§ 17.26.040), citywide design standards (§ 17.26.050), bicycle parking (§ 17.26.080), loading (§ 17.26.100).
  • Practical tip: Start here, then layer in the items below.

CB — Central Business District

• Purpose/uses: Not found in retrieved materials.
• Parking-bicycle specifics: Uses in CB are exempt from the short-term bicycle parking minimums (§ 17.26.080(A)(1)(d)). Projects in the PED overlay (generally within CB) have no on-site parking requirement (§ 17.21.030).
• Streetscape/landscaping along Main Street: Where buildings front the sidewalk, no landscaped area is required; extend the sidewalk to the facade (§ 17.25.050, CB/MU Main Street frontage).

MU — Mixed-Use District

• Purpose/uses: Not found in retrieved materials.
• Parking-bicycle specifics: Short-term bicycle parking generally applies (no CB exemption); follow the citywide minimums and placement rules (§ 17.26.080).
• Streetscape/landscaping along Main Street: Same as CB for parcels with Main Street frontage (§ 17.25.050).

SC — Service Commercial District

• Purpose/uses: Not found in retrieved materials.
• Parking siting: Off-street parking spaces may not be located within 10 feet of a street-facing property line; curb cuts limited to one per 80 linear feet of frontage (§ 17.17.040, SC district standards).

BPO — Business and Professional Office District

• Purpose: Office and related professional/administrative uses; some upper-floor residential possible (§ 17.18.010).
• Parking-design specifics: Parking spaces may be pervious, but travelways must be concrete or asphalt (§ 17.18.040). Also see citywide “no parking in required front setback” for business/industrial areas (§ 17.18.040).

I — Industrial District

• Purpose: Light industrial, warehouses, manufacturing, winery support, etc. (§ 17.18.010).
• Parking/loading specifics: In business/industrial areas, no loading/unloading in the right-of-way; at least one off-street loading space per use, with additional docks as needed to avoid blocking traffic or on-street parking (§ 17.18.040). Travelways must be concrete or asphalt; off-street parking not allowed in required front setback (§ 17.18.040).

PED — Parking Exemption District (Overlay)

• Purpose/where it applies: Downtown-focused overlay that eliminates on-site parking requirements (no fee), intended to preserve the pre-automobile block pattern; generally within the CB district (§ 17.21.030). Existing on-site parking must be maintained; future standards may follow a downtown parking study (§ 17.21.030 & footnote). See Overlay Districts.

Landscaping and screening around parking

• Parking lot trees: Minimum counts by lot size/canopy; planters along rights-of-way; curb and planter protection standards (§ 17.25.050). See Landscaping and Screening.

Process notes

• Changes in use/expansion and nonconformities: Additional parking is required when use changes or expansions increase the requirement; existing minimum parking must be maintained (§ 17.26.030, § 17.26.070(A)). If your site is legally nonconforming, also review Nonconforming Uses.
• Reductions and exceptions: Shared parking and TDM require approvals and, for shared/off-site, recorded agreements (§ 17.26.060–.070). Requests outside these tools may require a separate path under Variances and Exceptions.
• Downtown/historic context: CB and Historic Preservation areas interact with bicycle and ADU parking exemptions; verify if your parcel is in the PED or a designated historic district (§ 17.21.030; § 17.22.030(F)(6)).

Checklist

• Confirm your base district and any overlays (notably PED) on the zoning map; align with Overlay Districts.
• Calculate minimum off-street stalls using § 17.26.040 and round up; if your use is unlisted, plan for Planning Commission determination.
• Determine if bicycle parking is required and size short- and long-term facilities; note any CB/PED exemptions (§ 17.26.080).
• Apply eligible reductions (shared parking study, TDM) or ADU exemptions; prepare any required agreements for off-site/shared parking (§ 17.26.060–.070; § 17.22.030(F)(6)).
• Lay out stalls and aisles per § 17.26.050; honor setback prohibitions and screening; coordinate lighting with § 17.24.070 and accessible stalls with the California Building Standards Code.
• Size and place loading spaces if your building area/use triggers § 17.26.100; keep all loading operations on site.
• If in SC or BPO/I, apply the district-specific siting rules (e.g., SC 10' street setback for stalls; business/industrial “no parking in front setback”).
• Coordinate any site plan approvals with Design Review as required.

Risks & Ambiguities

Plain-English Summary

Most St. Helena projects must build on-site parking using the city’s minimum ratios and the layout rules for stall size, aisles, setbacks, and screening. Downtown and certain districts have special rules (or outright exemptions) and the city allows meaningful reductions for shared parking or TDM, so check overlays, district siting rules, and eligibility for reductions before you pave.

Source References

• § 17.26.010–.100 (Parking and Loading): purpose, definitions, applicability, ratios, design, reductions, bicycle parking, loading.
• § 17.25.050 (Landscaping—parking lot trees/planters; CB/MU Main St frontage rules).
• § 17.18.010, § 17.18.040 (Business & Industrial—purposes and parking/loading siting rules).
• § 17.17.040 (SC district—off-street parking location and curb-cut limits).
• § 17.21.030 (Parking Exemption District—purpose, standards).
• § 17.22.030(F)(6) (ADU parking and exemptions).

Retrieved passages

• CEC § 5 (Title 17) High relevance show source text
• St. Helena Zoning Code (Section 17.21.030) High relevance show source text
• St. Helena Zoning Code (§ 5) High relevance show source text
• St. Helena Zoning Code (chapter apply) High relevance show source text
• CEC § 5 (Article 625) High relevance show source text
• St. Helena Zoning Code (chapter or) High relevance show source text
• St. Helena Zoning Code (Title 17) High relevance show source text
• St. Helena Zoning Code (Title 17) High relevance show source text
• St. Helena Zoning Code (Title 17) High relevance show source text
• St. Helena Zoning Code (Section 17.22.030) High relevance show source text
• St. Helena Zoning Code (Title 25) High relevance show source text
• CFC § 5 (Title 17) High relevance show source text
• CBC § 17.24.070 (Title 17) Medium relevance show source text
• St. Helena Zoning Code (Title 17) Medium relevance show source text

Cited sections

• § 17.26.010–.100 (Parking and Loading): purpose, definitions, applicability, ratios, design, reductions, bicycle parking, loading. (§ 17.26.010)
• § 17.25.050 (Landscaping—parking lot trees/planters; CB/MU Main St frontage rules). (§ 17.25.050)
• § 17.18.010, § 17.18.040 (Business & Industrial—purposes and parking/loading siting rules). (§ 17.18.010)
• § 17.17.040 (SC district—off-street parking location and curb-cut limits). (§ 17.17.040)
• § 17.21.030 (Parking Exemption District—purpose, standards). (§ 17.21.030)
• § 17.22.030(F)(6) (ADU parking and exemptions). (§ 17.22.030)
• StHelena_ZoningCode.md

• Official St. Helena code library