Contra Costa County — Parking

Last reviewed: July 6, 2026

Overview

In unincorporated Contra Costa County, off-street vehicle and bicycle parking is governed by the County Ordinance Code’s Chapter 82-16 (Off-Street Parking). These rules establish how many spaces are required by land use, where parking may be located, and detailed design, landscaping, bicycle parking, loading, and special provisions like tandem and shared parking. Use- and district-specific overlays in Division 84 can add or supersede parts of these standards, so always read parking in tandem with your base zoning and any applicable plans on the Contra Costa County Zoning, Land Use, and Development Standards pages.

Most projects in unincorporated areas must provide required off-street parking on the same lot; limited off-site parking is allowed only within 200 feet under findings and recorded restrictions. See § 82-16.402.

Core rules you’ll use most

• Location of spaces
  • The baseline rule is same-lot parking. Off-site parking is allowed within 200 feet if the applicant controls the parking lot and the zoning administrator makes findings; shared parking must be tied down with a recorded deed restriction when approved (§ 82-16.402; § 82-16.414).
• When parking is triggered and how to count it
  • Show compliance at building/land-use permit; enlargements or changes in use that increase demand must add parking to today’s standard. Fractions ≥ 0.5 round up; seat counts based on 24 inches per bench seat (§ 82-16.206; § 82-16.208).
• Transportation Demand Management (TDM)
  • An approved, project-specific TDM plan under Chapter 82-32 can reduce the number of required off-street spaces and supersede otherwise-applicable counts (§ 82-16.206(c); § 82-16.406(c); § 82-32.008).
• Design and safety
  • No backing onto streets for parking areas serving R-, D-1, M-, O-1, A‑O, C-B, N-B, R-B, C-, C‑M, L‑I, W‑3, H‑I, or P‑1 districts; provide 12 ft (one-way) or 20 ft (two-way) access drives; keep 5 ft of sidewalk clear from bumper overhang (§ 82-16.404(a)(2)).
  • Surfacing must be paved and include at least 10% permeable pavement; provide lighting in non‑residential lots; install screening next to residential zones (§ 82-16.404(a)(5)–(9)).
• Loading
  • Most large commercial/industrial/hospitality buildings ≥10,000 sq ft must provide on‑site loading bays, sized 10 ft × 35 ft × 15 ft clear; quantity scales with floor area (§ 82-16.410).
• Bicycle parking
  • Both long‑term and short‑term bike parking are required for many nonresidential and multifamily uses, with placement near entries/paths and wayfinding signs (§ 82-16.412).
• Tandem and EV charging
  • Tandem is allowed in single‑family zones and conditionally in multifamily and commercial (with limits); EV charging spaces count toward minimums and must meet posted signage, accessibility, and protective‑bollard rules (§ 82-16.404(d)–(e)).
• Variances
  • Relief from Chapter 82‑16 standards is through the County’s variance process (Variances and Exceptions); see § 82‑16.416.

Required minimum off-street parking by selected land uses (unincorporated areas)

These are countywide minimums unless a district standard in Division 84 overrides them (Division 84 governs in a conflict per § 82‑16.206(c)). Confirm your land use on the Land Use page.

• If no category fits, the zoning administrator applies the “most similar use” method (§ 82‑16.406(b)).

Bicycle parking — amounts and placement

• Placement and visibility: locate near trail termini or as close as practicable to main entries; provide wayfinding signage (MUTCD D4-3 series); long‑term parking must be accessible to occupants/tenants (§ 82‑16.412(b)).
• Typical amounts (selected categories):
  • Residential: single‑family dwellings have no minimum (long‑term or short‑term). Multifamily without private garages: long‑term spaces for 15% of bedrooms and short‑term for 5% (minimums apply). With private garages: only short‑term spaces are required (5% of bedrooms; minimums apply) (§ 82‑16.412(c)).
  • Commercial/office: restaurants, retail, and office require short‑term and long‑term spaces in ratios keyed to square footage or employees; e.g., retail short‑term = 1 per 5,000 sq ft (min 2) and office long‑term = 1 per 10,000 sq ft (min 2). Cultural/education, healthcare, and manufacturing have tailored ratios as well (§ 82‑16.412(c)).

Design, layout, and landscaping you must show on plans

• Access/aisles/clearance: 12 ft (one‑way) or 20 ft (two‑way) access drives; keep spaces 18 ft from street intersections with aisles; provide internal circulation or a signed turnaround; maintain 5 ft clear sidewalk where bumpers overhang (§ 82‑16.404(a)(1)–(3)).
• Grade transitions: specific transition lengths above 5% and 14% gradients (§ 82‑16.404(a)(4)).
• Surfacing and permeability: pave for emergency vehicle loads; at least 10% of paved area must be permeable pavement; drain to avoid ponding (§ 82‑16.404(a)(5)).
• Marking, lighting, prohibitions: stripe each space; provide circulation signage as required by the zoning administrator; nonresidential lots must be lit (downward, shielded); no auto sales/repair in required parking areas (§ 82‑16.404(a)(6)–(8)).
• Screening next to residential: install a 6‑ft solid fence/wall with vegetation, or a 6‑ft landscape screen between the lot and any residential zoning or P‑1 residential use (§ 82‑16.404(a)(9)). See also Landscaping and Screening.
• Stall geometry (selected): standard stalls are 8 ft 6 in wide; depths and aisles vary by angle. Examples:
  • 0° (parallel): depth 8 ft 6 in; aisle 12 ft (1‑way)/20 ft (2‑way).
  • 45°: depth 18 ft 6 in (standard); aisle 13 ft (1‑way)/20 ft (2‑way).
  • 90°: depth 18 ft; aisle 25 ft (§ 82‑16.404(b)(1)).
• Landscaping inside lots: curbed planters; 5% minimum landscaped area for lots with >5 spaces; for lots with >70 spaces, distribute trees (1 per 20 linear ft of landscaping) and planter islands (≥1 per 10 spaces, ≥5 ft wide) (§ 82‑16.404(c)).
• Tandem: counts as two spaces; SF detached homes may use tandem if setbacks are met; multifamily capped at 15% of units and only under specified assignment/garage/transit criteria; commercial up to 25% with valet or if restricted to employees (§ 82‑16.404(d)).
• EV charging: EV spaces count toward minimums; require accessibility, signage/markings, lighting, and protection (bollards/curbs) with posted service contact; EV space use is limited to active charging (§ 82‑16.404(e)). For accessibility technical criteria, see the California Building Standards Code.

Special provisions

• Exclusive parking facilities: Allowed near transit or in specified office/commercial/planned districts if restricted to specified users; must be within 1,000 ft of the served use or transit stop; subject to plan submittal and general lot standards (§ 82‑16.408).
• Loading: Triggered at 10,000 sq ft GFA for qualifying uses; quantities scale up by floor area; loading spaces must be on site, accessible from a public street, outside required yards, and kept clear for loading use (§ 82‑16.410).
• Shared parking: Allowed if peaks differ and the total shared supply covers the highest simultaneous demand; requires recorded deed restrictions and signage listing the served uses (§ 82‑16.414).
• Home occupations: May not occupy or displace required off‑street parking, except one required space may be used by a business‑related vehicle (§ 82‑40.010(b)).

District-by-district guidance (unincorporated areas)

R‑ districts (Single‑Family Residential)

• Purpose/uses: Detached single‑family neighborhoods with accessory uses; see Zoning.
• Parking takeaways:
  • No bicycle parking minimums for single‑family (§ 82‑16.412(c)).
  • Tandem spaces allowed if district setbacks are met (§ 82‑16.404(d)(1)).
  • Parking areas may not require backing into streets (§ 82‑16.404(a)(2)).
  • Countywide single‑family vehicle minimums in § 82‑16.406: Not found in retrieved materials. Verify with the jurisdiction.
• Design: Follow § 82‑16.404 geometry/landscaping/lighting rules; see Design Review where applicable.

D‑1 and M‑ districts (Two‑Family and Multiple Family Residential)

• Purpose/uses: Duplex and multifamily housing.
• Parking takeaways:
  • Multifamily minimums (district standard): studio = 1; 1‑bed = 1.5; 2+ bed = 2 per unit; plus 0.25 guest per unit; half the spaces covered; 9 ft × 19 ft clear, not in side-yard or front setback (§ 84‑26.1202).
  • Bicycle parking: without private garages, long‑term = 15% of bedrooms; short‑term = 5% (minimums apply). With private garages: short‑term only (5% of bedrooms) (§ 82‑16.412(c)).
  • Tandem up to 15% of units if assigned, in a garage, within a General Plan Transit Corridor/Local Transit Service Area, and non‑interfering (§ 82‑16.404(d)(2)).
  • No backing into streets for lot egress (§ 82‑16.404(a)(2)).

C‑B (Central Business) and related commercial districts (N‑B, R‑B, C‑, C‑M)

• Purpose/uses: Retail, services, mixed commercial centers.
• Parking takeaways:
  • C‑B expressly applies Chapter 82‑16 for off‑street parking (§ 84‑49.1202).
  • In N‑B planned districts, parking is integrated through an adopted plan/map showing access, parking areas, and internal circulation (§ 84‑50.1402; § 84‑50.1404). Applications must show automobile parking areas and ingress/egress (§ 84‑50.1604(5)–(7)).
  • No backing into streets; bicycle parking and EV rules apply (§ 82‑16.404; § 82‑16.412; § 82‑16.404(e)).
• Typical uses: See district chapters in Division 84; many uses rely on § 82‑16.406 countywide ratios (e.g., grocery 1/200 sq ft; retail 1/300 sq ft).

O‑1/A‑O (Office)

• Purpose/uses: Professional and administrative office campuses.
• Parking takeaways: Countywide office minimums (non‑medical) = 1/250 sq ft (§ 82‑16.406(a)(3)); bicycle parking ratios for office apply under § 82‑16.412(c); exclusive parking facilities can be established in O‑1/A‑O with conditions (§ 82‑16.408).

L‑I/W‑3/H‑I (Industrial/Waterfront/Heavy Industrial)

• Purpose/uses: Manufacturing, warehousing, industrial services.
• Parking takeaways:
  • Countywide warehouse minimum: 1/1,000 sq ft (§ 82‑16.406(a)(28)); manufacturing often pairs with significant loading (§ 82‑16.410).
  • Some legacy district chapters include their own minimums (e.g., a heavy industrial rule of at least two spaces per three employees on peak shift) that may supersede Chapter 82‑16 if in conflict (§ 82‑16.206(c); legacy 84‑56 standards). Verify applicability to your district and project.
  • Bicycle parking for manufacturing: long‑term 1/15,000 sq ft (min 2); short‑term 1/20,000 sq ft (min 2) (§ 82‑16.412(c)).

P‑1 (Planned Unit)

• Purpose/uses: Master-planned projects.
• Parking takeaways: Bound by Chapter 82‑16 design rules (no backing onto streets; landscaping/lighting) and any adopted P‑1 plan; exclusive parking facilities are allowed in P‑1 under § 82‑16.408 where criteria are met. Coordinate early with Design Review.

Decision aids

Bicycle parking (selected categories)

Stall geometry (snapshot)

Checklist

• Confirm your base zoning and whether any planned district or overlay controls parking layout or supply (Overlay Districts).
• Classify your use and compute minimum spaces using § 82‑16.406 (or a more specific Division 84 standard if it conflicts). Document fractional rounding per § 82‑16.208.
• If pursuing a TDM reduction, submit the conceptual program with your application (§ 82‑32.008).
• Provide bicycle parking counts and placement per § 82‑16.412, with wayfinding signs.
• Demonstrate design compliance: access widths, aisle widths, stall geometry, surfacing with 10% permeable pavement, drainage, lighting, and screening (§ 82‑16.404).
• If sharing or placing parking off site, secure approvals and record deed restrictions (§ 82‑16.402; § 82‑16.414).
• Show loading bays, quantities, and clearances if ≥10,000 sq ft and in a covered use (§ 82‑16.410).
• If using tandem or EV charging, show limits, signage, access, bollards, and lighting (§ 82‑16.404(d)–(e)). For accessibility, see the California Building Standards Code.
• Confirm whether Design Review applies to your site design.

Risks & Ambiguities

Plain-English Summary

In unincorporated Contra Costa County, you must build parking on site (with rare, recorded exceptions), provide the number of spaces your use requires, add bicycle parking where specified, and design the lot to County standards for access, geometry, lighting, and landscaping. Some districts or plans impose their own numbers or layouts, so check your zoning, consider a TDM plan if you want fewer spaces, and be sure EV and tandem setups meet the County’s operational and safety rules.

Source References

• § 82-16.202 (Purpose) and § 82-16.204 (Definitions).
• § 82-16.206 (General; conflicts; compliance) and § 82-16.208 (Computation).
• § 82-16.402 (Location) and § 82-16.404 (Design & layout; stall geometry; landscaping; tandem; EV).
• § 82-16.406 (Required number of parking spaces).
• § 82-16.408 (Exclusive parking facilities).
• § 82-16.410 (Loading spaces).
• § 82-16.412 (Bicycle parking).
• § 82-16.414 (Shared parking) and § 82-16.416 (Variances).
• Chapter 82-32 (TDM and parking reductions).
• District references: § 84‑49.1202 (C‑B); § 84‑50.1402 & § 84‑50.1404 & § 84‑50.1604 (N‑B planned areas); § 84‑26.1202 (M‑ multifamily parking); legacy industrial parking standards (§ 84‑56 excerpts).
• Home occupations and parking: § 82‑40.010(b).
• Accessibility technical criteria: CBC Ch. 11B (link via California Building Standards Code).

Retrieved passages

• Contra Costa County Zoning Code (§ II) High relevance show source text
• Contra Costa County Zoning Code (§ II) High relevance show source text
• Contra Costa County Zoning Code (Chapter 82-32) High relevance show source text
• Contra Costa County Zoning Code (§ 8118) High relevance show source text
• Contra Costa County Zoning Code (chapter that) High relevance show source text
• Contra Costa County Zoning Code High relevance show source text
• Contra Costa County Zoning Code (§ II) Medium relevance show source text
• Contra Costa County Zoning Code (chapter and) Medium relevance show source text
• Contra Costa County Zoning Code (chapter conflicts) Medium relevance show source text
• Contra Costa County Zoning Code (§ 8115) Medium relevance show source text
• Contra Costa County Zoning Code (§ 8162) Medium relevance show source text
• Contra Costa County Zoning Code (§ II) Medium relevance show source text
• Contra Costa County Zoning Code (section must) Medium relevance show source text

Cited sections

• § 82-16.202 (Purpose) and § 82-16.204 (Definitions). (§ 82-16.202)
• § 82-16.206 (General; conflicts; compliance) and § 82-16.208 (Computation). (§ 82-16.206)
• § 82-16.402 (Location) and § 82-16.404 (Design & layout; stall geometry; landscaping; tandem; EV). (§ 82-16.402)
• § 82-16.406 (Required number of parking spaces). (§ 82-16.406)
• § 82-16.408 (Exclusive parking facilities). (§ 82-16.408)
• § 82-16.410 (Loading spaces). (§ 82-16.410)
• § 82-16.412 (Bicycle parking). (§ 82-16.412)
• § 82-16.414 (Shared parking) and § 82-16.416 (Variances). (§ 82-16.414)
• Chapter 82-32 (TDM and parking reductions). (Chapter 82-32)
• District references: § 84‑49.1202 (C‑B); § 84‑50.1402 & § 84‑50.1404 & § 84‑50.1604 (N‑B planned areas); § 84‑26.1202 (M‑ multifamily parking); legacy industrial parking standards (§ 84‑56 excerpts). (§ 84)
• Home occupations and parking: § 82‑40.010(b). (§ 82)
• Accessibility technical criteria: CBC Ch. 11B (link via California Building Standards Code).
• ContraCostaCounty_ZoningCode.md
• 2025 California Building Code.md

• Official Contra Costa County code library