Sonoma County — Parking

Last reviewed: July 6, 2026

Overview

In unincorporated areas of Sonoma County, off‑street parking, bicycle parking, and loading are governed by Chapter 26 of the Sonoma County Zoning Regulations. Countywide baseline rules live in Article 86 (Parking Regulations), with added design rules in Article 82 and use- or district‑specific modifications elsewhere in the code. This page synthesizes how parking applies to typical projects, how to count spaces, where they can go, and key exceptions under County zoning.

Bottom line: Every use in unincorporated areas must provide on‑site parking per the County’s formulas unless a specific overlay, use regulation, or approved reduction applies under § 26‑86‑010.

Countywide framework (what nearly all projects must meet)

• Off‑street parking required. All uses must provide on‑site parking per the use-based schedules in § 26‑86‑010. Examples include: single‑family (1 covered space), duplex (2 covered), multifamily (1 covered per unit + 0.5 guest per unit, with +0.5 per unit having >2 bedrooms), general office (1/250 sf; min 4 spaces), restaurants (1/60 sf dining), shopping centers (1/200 sf), and MP‑district uses (warehouse 1/2,000 sf; office 1/250–275 sf; manufacturing 1/500 sf).
• Bicycle parking (baseline). Provide 1 bicycle parking space per 5 required auto spaces for commercial, industrial, and institutional uses under § 26‑86‑010(a).
• Mixed use. For mixed‑use proposals, the County may accept the most restrictive single standard if the applicant proves the combined plan will function; otherwise, each use must meet its own standard under § 26‑86‑010(h).
• Unlisted uses. The Zoning Administrator or Planning Commission sets comparable parking for uses not listed in the schedule per § 26‑86‑010(g).
• Reductions and sustainability incentives. Decision‑makers may reduce required parking by up to 20% for TDM measures, improved bicycle/transit amenities, or LID stormwater design; an additional 10% reduction is available where at least 10% of spaces are solar‑covered carports; compact‑space share may be increased up to 50% to accommodate solar, EV charging, or bike facilities; accessible spaces are not reducible. See § 26‑86‑010(i), (m)–(p) and § 26‑86‑020.
• Covered vs. uncovered (residential). The Director may waive covered parking where topography/lot size makes it infeasible or screening is provided, subject to administrative design review under § 26‑86‑010(k); however, residential covered spaces cannot project into required street‑facing yards per § 26‑82‑030(p).
• Off‑site parking. Nonresidential parking may be provided on‑site or within 300 feet if a permanent parking easement is recorded, per § 26‑82‑030(q).
• Design and operation basics (apply with development standards). For lots with >10 stalls: at least 8% of the parking area must be landscaped; two‑way aisles are generally at least 20 feet wide; internal circulation should allow forward exit; lighting must prevent glare; surfaces must be approved and striping provided. See § 26‑82‑030(k)–(o).

Bicycle parking and support facilities

• Support facilities (large nonresidential sites). Nonresidential projects with 50+ employees must provide covered bike parking/lockers at 1 per 8 employees; every 3 covered bike spaces/lockers can reduce auto parking by 1 space; each shower and changing area can reduce auto parking by 3 spaces. Minimum covered bike space is 3' x 6' with 7' overhead clearance, per § 26‑86‑020(a).
• Baseline bike racks also required by § 26‑86‑010(a) (1 bike per 5 required autos) as noted above.

Loading (Countywide and use‑specific)

• Use‑specific loading. Certain uses include loading in their requirements—e.g., nurseries and material yards must add one 15' x 30' loading space per acre under § 26‑86‑010 (commercial/industrial schedule).
• Mixed‑use projects must locate loading/refuse away from residential units and screen them, per mixed‑use standards referencing § 26‑86‑010 for parking counts.

District-specific and overlay rules that change parking

MP — Industrial Park

• Purpose and applicability. The MP Industrial Park district is one of the County’s industrial zones listed in § 26‑02‑090 and mapped in the County’s Zoning Database; design standards for the district are in § 26‑12‑050. Typical facilities addressed in County parking schedules include warehousing, office, and manufacturing.
• Where it applies. MP is applied to industrial land use categories per § 26‑01‑010.
• Key parking/loading rules.
  • Parking rates for MP uses are in the Countywide schedule in § 26‑86‑010 (warehouse 1/2,000 sf; office 1/250–275 sf; manufacturing 1/500 sf).
  • Loading: At least 1 space per 40,000 sf GFA; each space 12' x 40' x 14' clear; not in front yard; not facing a public street; and kept at least 100 feet from residential zones unless screened and approved; buildings used primarily for offices may be exempt. See § 26‑12‑050(H).

Residential zones — Multifamily (4+ units)

• Purpose and applicability. In residential zones, the multifamily standards in § 26‑08‑050 apply to dwelling groups or multifamily structures of four or more units.
• Where it applies. Multifamily development in residential districts in unincorporated areas.
• Key parking design rules.
  • Screen parking from surrounding residents with at least 4' fencing or landscaping; vehicular access and circulation points require Transportation & Public Works sign‑off; paving is required unless a permeable alternative is approved; design must also conform to Article 86 standards. See § 26‑08‑050(F).

Mixed‑Use Projects (countywide standard)

• Purpose and applicability. Project‑level standards ensure compatibility of residential and nonresidential components.
• Key parking/loading rules.
  • Use § 26‑86‑010 to count parking for each component; residential parking in a mixed‑use need not be covered. Loading/refuse areas must be located and screened to protect residences. See § 26‑24 (Mixed Use) cross‑references and § 26‑86‑010.

Local Guidelines/Lance Drive — LG/LAN Combining Zone

• Purpose and applicability. A local overlay district that sets tailored standards “in anticipation of annexation” for parcels designated LG/LAN in the zoning database. It modifies several development standards, including parking, access, and location of surface parking. Code section identifier was not provided in the retrieved excerpt; verify with Permit Sonoma.
• Key parking rules that override Article 86 in LG/LAN.
  • Vehicle parking: Medium‑density residential minimums of 1.5/DU (1.0/DU for affordable; 0.5/DU for senior housing); high‑density residential at 1 space/250 sf; bicycle parking at 1 per 4 units (if no private bike storage) and 1 per 5,000 sf for high‑density residential. Public surface parking not allowed in the front setback; surface parking belongs to the side/rear with alley/driveway access where practicable. See the LG/LAN tables and access standards (Code § not shown in retrieved text).

ADUs — Accessory Dwelling Units

• Applicability. Accessory units are regulated in § 26‑88‑060.
• Parking rules.
  • Baseline: Provide 1 parking space; tandem in an existing driveway is allowed. Replacement parking for a demolished/converted garage or carport is not required. See § 26‑88‑060(i)(1)–(2).
  • Exemptions: No ADU parking may be required if the site is within ½‑mile walking distance of transit; within the HD historic combining district; the ADU is within or constructed from the existing primary or accessory structure; on‑street permits are required but not offered to the ADU occupant; within one block of a car‑share vehicle; submitted with a new primary dwelling; or when the ADU is a studio. See § 26‑88‑060(i)(1)(i)–(vii).
  • Note: State California ADU law also limits local ADU parking in similar ways; the County’s ordinance mirrors those limits.

Representative requirements and where to find them

Practical design notes you’ll likely need

• Put parking where the code allows. Residential covered stalls must stay on the subject parcel and out of required street‑facing yards; commercial parking can be nearby (≤300 ft) if you record a permanent parking easement. See § 26‑82‑030(p)–(q).
• Expect to stripe, light and landscape. Most parking lots need internal striping and directional arrows, glare‑controlled lights, and at least 8% interior landscaping if they exceed 10 stalls, per § 26‑82‑030(k), (n)–(o) and landscaping and screening.
• Seeking a reduction? Document TDM, bicycle/transit amenities, LID features, and/or solar canopies to unlock up to a 20% reduction, plus potential compact‑space flexibility; accessible stalls cannot be reduced. See § 26‑86‑010(i), (m)–(p).
• Multifamily details. Screen parking from neighbors, pave (or approved permeable), and coordinate driveways/circulation with County DPW per § 26‑08‑050(F).
• Mixed‑use projects. You can often count the most restrictive single standard if you prove the shared plan really works; otherwise, count each use separately per § 26‑86‑010(h).
• Overlay exceptions exist. The LG/LAN overlay disallows public surface parking in the front setback and sets different rates and bike ratios; verify the applicable combining zone in the Zoning Database before finalizing counts. Code § not shown in the retrieved text; see the LG/LAN tables.

Checklist

• Identify base zoning and any combining/overlay districts in the County Zoning Database; confirm you are in the unincorporated area.
• Choose the correct category in § 26‑86‑010 and calculate required auto and bicycle parking.
• If mixed‑use, prepare a shared‑parking plan or count each component; document effectiveness if relying on the “most restrictive” pathway in § 26‑86‑010(h).
• If multifamily (4+ units), incorporate screening, paving/permeable choices, and DPW access approvals per § 26‑08‑050(F).
• Confirm layout: aisle widths, forward egress, lighting and striping per § 26‑82‑030(l)–(o).
• Provide interior landscaping (≥8% if >10 stalls) per § 26‑82‑030(k).
• For nonresidential off‑site parking, secure/record the easement (≤300 ft) per § 26‑82‑030(q).
• If pursuing reductions or compact‑space flexibility, document TDM, bike/transit/solar/LID features per § 26‑86‑010(i), (m)–(n).
• For ADUs, apply § 26‑88‑060(i) for required space, tandem allowance, and exemptions; cross‑check State California housing laws where needed.
• If in MP, add code‑compliant loading per § 26‑12‑050(H).
• If in LG/LAN, apply the overlay’s modified rates and access/location rules; confirm boundaries.

Risks & Ambiguities

Plain-English Summary

For projects in unincorporated Sonoma County, start with Article 86 to count how many car and bike spaces you need, then lay them out per the County’s design rules and your district’s specifics. Many projects can trim counts by adding bike lockers, showers, solar canopies, and TDM measures, but accessible stalls are off‑limits to reductions. Special districts and uses—like the MP Industrial Park, the LG/LAN overlay, mixed use, and ADUs—have tailored parking and loading rules that can either raise, lower, or reshape what you provide.

Information Gaps

• The retrieved LG/LAN combining‑zone excerpt did not include a visible code section number—confirm the exact § citation with the County.

Source References

• § 26‑86‑010 Required parking (Article 86 — Parking Regulations). Parking schedules, mixed‑use pathway, reductions/waivers.
• § 26‑86‑020 Bicycle parking and support facilities. Ratios, covered space dimensions, shower/locker reductions.
• § 26‑82‑030 General development standards. Parking landscaping, aisle widths, circulation, lighting/surfacing, residential covered location, off‑site (≤300 ft) parking.
• § 26‑08‑050 Multifamily development standards. Screening, paving/permeable, DPW access.
• § 26‑12‑050 MP zone design requirements. Industrial Park loading space number, size, and placement limits.
• § 26‑88‑060 Accessory dwelling units. One space baseline; tandem allowed; exemptions; no replacement parking.
• LG/LAN combining zone (Local Guidelines/Lance Drive). Modified parking/location/access rules; section number not shown in retrieved excerpt.
• Wineries/tasting rooms parking and event traffic management (use‑specific).

Also see: Sonoma County zoning & planning overview, Sonoma County Zoning, Sonoma County Land Use, Sonoma County Design Review, Sonoma County Overlay Districts, Sonoma County Landscaping and Screening, Sonoma County Nonconforming Uses, Sonoma County Variances and Exceptions, and the California Building Standards Code.

Retrieved passages

• Sonoma County Zoning Code (section would) High relevance show source text
• Sonoma County Zoning Code (Article 82) Medium relevance show source text
• Sonoma County Zoning Code (Article 82) Medium relevance show source text
• Sonoma County Zoning Code (Article 86.) Medium relevance show source text
• Sonoma County Zoning Code (title companies) Medium relevance show source text
• Sonoma County Zoning Code (Article 86) Medium relevance show source text
• Sonoma County Zoning Code Medium relevance show source text
• Sonoma County Zoning Code (Section 26-88-193) Medium relevance show source text
• Sonoma County Zoning Code (§ 66314) Medium relevance show source text
• Sonoma County Zoning Code (Article 65) Medium relevance show source text
• Sonoma County Zoning Code (§ 66322) Medium relevance show source text
• CBC § 66314 (§ 66314) Medium relevance show source text
• California Fire Code (section exist) Medium relevance show source text
• Sonoma County Zoning Code (Article 82) Medium relevance show source text
• Sonoma County Zoning Code (§ III) Medium relevance show source text
• CMC § 660 Medium relevance show source text
• Sonoma County Zoning Code (§ 7) Medium relevance show source text
• Sonoma County Zoning Code (§ V) Medium relevance show source text

Cited sections

• § 26‑86‑010 Required parking (Article 86 — Parking Regulations). Parking schedules, mixed‑use pathway, reductions/waivers. (§ 26)
• § 26‑86‑020 Bicycle parking and support facilities. Ratios, covered space dimensions, shower/locker reductions. (§ 26)
• § 26‑82‑030 General development standards. Parking landscaping, aisle widths, circulation, lighting/surfacing, residential covered location, off‑site (≤300 ft) parking. (§ 26)
• § 26‑08‑050 Multifamily development standards. Screening, paving/permeable, DPW access. (§ 26)
• § 26‑12‑050 MP zone design requirements. Industrial Park loading space number, size, and placement limits. (§ 26)
• § 26‑88‑060 Accessory dwelling units. One space baseline; tandem allowed; exemptions; no replacement parking. (§ 26)
• LG/LAN combining zone (Local Guidelines/Lance Drive). Modified parking/location/access rules; section number not shown in retrieved excerpt. (section number)
• Wineries/tasting rooms parking and event traffic management (use‑specific).
• SonomaCounty_ZoningCode.md
• 2025 California ADU handbook.md

• Official Sonoma County code library