Local zoning · Santa Clara County

Santa Clara County — Parking

Parking under the Santa Clara County local zoning and planning code, with the controlling citations.

Last reviewed: July 6, 2026

Overview

In unincorporated areas, parking is governed by Chapter 4.30 Off‑Street Parking and Loading of the Santa Clara County Zoning Ordinance. It sets how many spaces are required by use, where and how spaces must be built, when off‑site or shared parking is allowed, and when on‑site loading is required. For context on how this chapter fits with base districts and use tables, see the Santa Clara County Zoning and Santa Clara County Development Standards pages.

Key rule: In unincorporated areas, most new or “substantially altered” uses must install off‑street parking per Chapter 4.30, and it is a continuing obligation—reducing required spaces is a zoning violation. See § 4.30.020(A), (D).

Countywide parking framework (Chapter 4.30)

Purpose and applicability: Chapter 4.30 applies countywide in unincorporated areas, with a limited Stanford lands carve‑out noted below. It covers residential and nonresidential minimums, special provisions, design, location, loading, and exceptions. § 4.30.010, § 4.30.020.
Existing single‑family homes: May expand without retrofitting to current parking minimums if they remain single‑family and don’t further reduce existing on‑site spaces. § 4.30.020(B).
Stanford lands: Chapter 4.30 generally does not apply on Stanford lands except residential parking in R1S and R3S (see district notes). § 4.30.020(C).
Rounding: Fractions round up to the next space. § 4.30.020(E).

Minimum parking by use

Required spaces are set by tables in § 4.30.030 (residential) and § 4.30.040 (nonresidential). The residential table is countywide but is superseded for certain overlays and SB 9‑related Urban Primary Units, as flagged in the table notes. § 4.30.030 Notes; see also § 4.10.387(E) reference; verify parcel‑specific applicability with Planning.

Residential (selected)

Single‑family: 2 per unit (1 covered). § 4.30.030 Table 4.30‑1.
Two‑family: 2 per unit (1 covered per unit). § 4.30.030 Table 4.30‑1.
Multifamily: 1 per unit. § 4.30.030 Table 4.30‑1.
ADUs: 1 per standard ADU or movable tiny home; none for JADUs; several state‑law exemptions apply (see ADU note below). § 4.30.030 Table 4.30‑1; § 4.10.015(I).

Nonresidential (selected)

Adult uses: 1 per 200 sq ft. § 4.30.040 Table 4.30‑2.
Agricultural equipment sales/services: 1 per 500 sq ft plus 1/employee. § 4.30.040 Table 4.30‑2.
Agricultural processing: 1 per 500 sq ft plus 1/employee. § 4.30.040 Table 4.30‑2.
Agricultural research: 1 per 350 sq ft plus 1/employee. § 4.30.040 Table 4.30‑2.
Agricultural sales—limited (farm stands): 5 per stand, plus 3 additional where U‑pick is allowed. § 4.30.040 Table 4.30‑2.

Table note highlights:

If a ratio is “per sq ft,” it’s gross floor area minus interior areas for parking/loading/mechanical, unless noted. § 4.30.040(A).
“Per employee” = maximum on‑site at any time in a normal schedule. § 4.30.040(B).
Company vehicles need additional on‑site spaces beyond the table. § 4.30.040(C).
Approval authority may require more spaces (or allow a reduction via § 4.30.100) based on a parking study. § 4.30.040(D).

Quick reference — selected minimums

Use	Minimum Spaces	Key Notes	Code Reference
Single‑family (unincorporated)	2 per unit; 1 covered	Existing homes may expand without retrofit, with limits	§ 4.30.030; § 4.30.020(B)
Two‑family	2 per unit; 1 covered per unit	-n3 District may supersede (see districts)	§ 4.30.030; Notes
Multifamily	1 per unit	-n3 District may supersede (see districts)	§ 4.30.030; Notes
ADU (standard or movable tiny home)	1 per ADU	Statutory exemptions; no replacement for converted garage	§ 4.30.030; § 4.10.015(I)
JADU	None	Statutory	§ 4.30.030
Adult uses	1 per 200 sq ft	—	§ 4.30.040 Table 4.30‑2
Ag. processing	1 per 500 sq ft + 1/employee	—	§ 4.30.040 Table 4.30‑2

Design and location standards

Residential single‑/two‑family space size: 8.5 ft × 18 ft minimum; covered parking may be a garage or carport with 7 ft vertical clearance; tandem allowed with conditions. § 4.30.070(A)(1), (3)–(4).
Front yard limits: Max two front‑yard spaces count toward minimum; driveways/parking may occupy ≤40% of lot frontage width and ≤40% of front yard area; no parking on lawns. § 4.30.070(A)(6)–(8).
Extra spaces where on‑street parking is constrained: +2 spaces if none within 100 ft; +1 if parking is allowed only on one side of the street. § 4.30.070(A)(9).
Nonresidential and multifamily stall sizes and aisles: Regular 8.5×18; compact up to 25% where allowed (see below); parallel 9×23; two‑way aisle min 26 ft; one‑way aisles vary by angle (e.g., 90°=20 ft). § 4.30.070(B) and Table 4.30‑5.
Access driveways (multifamily and nonres): Two‑way min 22 ft; one‑way min 12 ft; internal circulation must avoid re‑entering public streets. § 4.30.070(C).
On‑site vs. off‑site: Parking must normally be on the same lot; off‑site may be approved if within 300 ft, reasonably convenient, and secured via deed/long‑term lease/easement recorded to run with the land. § 4.30.080.

Special provisions and credits

Compact stalls: Allowed up to 25% in 5+ unit multifamily and in nonresidential lots with 20+ spaces; must be signed and marked. § 4.30.060(A).
Motorcycle/bicycle credits: Every 4 motorcycle or 6 bicycle spaces may credit 1 auto space, each capped at 1/40 of total auto spaces. § 4.30.060(B).
Bicycle storage: Commercial/industrial projects with 20+ required spaces must install secure bicycle storage (1 bike per 20 required spaces). § 4.30.060(C).
Accessible parking: Number of accessible spaces per Table 4.30‑3; design must follow the California Building Standards Code (CBC) Chapter 11B; multifamily facilities must also meet CBC Chapter 11A. § 4.30.060(D) and Table 4.30‑3.

Shared/mixed‑use and cooperative parking

Mixed‑use: Sum the parking for each use unless shared parking is approved. § 4.30.050(B).
Shared parking: Approval authority may reduce totals when uses peak at different times; requires a qualified parking study and recorded agreement; off‑site must meet § 4.30.080. § 4.30.050(C).
Cooperative facilities: A common facility may serve multiple separate uses if it meets location, documentation, and total‑space rules. § 4.30.050(D).

Loading requirements

Applicability: Uses 10,000 sq ft+ that receive/ship goods must provide on‑site loading. § 4.30.090(A).
Minimum: 1 space, plus 1 per additional 20,000 sq ft; each space 10 ft W × 30 ft L × 15 ft H, with appropriate ingress/egress. § 4.30.090(B)–(D).
Buffering: 50 ft separation from any residential lot unless fully enclosed or behind 8‑ft walls. § 4.30.090(E).

Exceptions and discretionary reductions

Parking exception: For uses subject to discretionary review, the approval authority may reduce required spaces for specific circumstances (e.g., older building areas, proximity to transit, unique use characteristics, constrained lot configuration) if supported by findings and, when applicable, a parking study. § 4.30.100.
During permit review, staff will also confirm adequate parking and access as part of Santa Clara County Design Review where applicable. See permit findings emphasizing adequate off‑street parking/loading. § 5.60.030(C)(1).

ADU‑specific parking

Baseline: 1 off‑street space for a standard ADU; none for a JADU. § 4.10.015(I)(1).
No replacement required when a garage/carport is converted to an ADU. § 4.10.015(I)(3) “Retention of Parking.”
State‑law exemptions: No ADU parking if within ½ mile of transit, within the -h Historic Preservation Combining District, inside an existing structure, where on‑street permits are required but not offered to the ADU, or where a nearby car‑share vehicle exists—evidence required. § 4.10.015(I)(3)(a)–(e).
For statewide background, see California ADU law and California housing laws.

District‑by‑district notes (where parking differs)

These are the districts/combining zones where Chapter 4.30’s general rules are modified or specially applied. For full base‑district purposes/uses, start at the Santa Clara County Land Use and Overlay Districts pages.

R1S

How parking differs: Chapter 4.30 expressly applies to residential parking in R1S on Stanford lands, even though Stanford otherwise follows its General Use Permit. § 4.30.020(C).
Purpose, typical permitted uses, key dimensional standards, and mapped extent: Not found in retrieved materials. Verify with the jurisdiction.

R3S

How parking differs: Same as R1S—residential parking is governed by Chapter 4.30 on Stanford lands for R3S. § 4.30.020(C).
Purpose, typical permitted uses, key dimensional standards, and mapped extent: Not found in retrieved materials. Verify with the jurisdiction.

-n3 District

How parking differs: For two‑family and multifamily residences, § 3.40.050(E) standards supersede Table 4.30‑1 and § 4.30.070(A)(9). § 4.30.030 Notes.
Purpose, typical permitted uses, key dimensional standards, and mapped extent: Not found in retrieved materials. Verify with the jurisdiction.

-h Historic Preservation Combining District

How parking differs: ADUs within -h qualify for a no‑parking exemption under § 4.10.015(I)(3)(b).
For program context, see Santa Clara County Historic Preservation.

Urban Primary Units and Urban Lot Splits

How parking differs: For parcels created via urban lot splits or with Urban Primary Units, § 4.10.387(E) supersedes Table 4.30‑1 and § 4.30.070(A)(9) per table notes. Details not found in retrieved materials—confirm applicability early. § 4.30.030 Notes.

Practical design tips

Don’t over‑pave the front yard: Watch the 40% frontage and front‑yard coverage caps for driveways/parking. § 4.30.070(A)(7).
Use compact stalls carefully: Keep them ≤25% where allowed and post signs/markings. § 4.30.060(A).
Plan for bikes and accessibility early: Meet bicycle storage triggers and CBC‑based accessible stall counts; coordinate with Santa Clara County Landscaping and Screening if adding screening/planting near stalls. § 4.30.060(C)–(D).

Checklist

Confirm base/overlay district(s) and whether R1S/R3S, -n3, -h, or Urban Primary Unit rules affect parking. § 4.30.020(C); § 4.30.030 Notes.
Calculate minimum spaces from the applicable table(s) and notes. § 4.30.030–.040.
Check ADU/JADU minimums and exemptions if applicable. § 4.10.015(I).
Verify stall and aisle dimensions, driveway widths, front‑yard coverage, and tandem rules. § 4.30.070.
Determine if bicycle storage or compact stalls are triggered; assign any allowable credits. § 4.30.060.
If proposing off‑site/shared parking, prepare the required agreements and (if shared) a parking study. § 4.30.050–.080.
For nonresidential 10,000 sq ft+ with goods movement, design and buffer loading spaces. § 4.30.090.
If seeking a reduction, document findings and provide a qualified parking study for discretionary review. § 4.30.100; see Santa Clara County Variances and Exceptions.

Risks & Ambiguities

Issue	Why it matters	What to verify
-n3 District supersedes	Two‑family/multifamily ratios may change	Whether § 3.40.050(E) applies to your parcel; detailed standards not in retrieved materials.
Urban Primary Units / SB 9	Table notes say standards differ	Whether § 4.10.387(E) applies and how; obtain current text from Planning.
Off‑site parking within 300 ft	Title security and distance can derail approvals	Measured path of travel, deed/lease/easement terms acceptable to County Counsel; recordation timing. § 4.30.080.
Front‑yard coverage cap	Over‑wide driveways can trigger redesign	40% frontage/area caps and counting rules for front‑yard spaces. § 4.30.070(A)(6)–(7).
On‑street shortage adds spaces	Surprise +1 or +2 required	Whether on‑street parking exists within 100 ft or both‑sides parking is allowed. § 4.30.070(A)(9).
Accessible stall counts	CBC updates over time	Apply Table 4.30‑3 counts and current CBC Ch. 11A/11B design. § 4.30.060(D).
Shared parking reductions	Require technical support and recordation	Scope and methodology of parking study; shared‑use contract terms. § 4.30.050(C).
Discretionary reductions	Findings‑driven and case‑specific	Whether your use fits § 4.30.100 circumstances and won’t conflict with required findings.

Plain-English Summary

If you’re building or changing a use in unincorporated Santa Clara County, plan for on‑site parking. Use the County’s tables to set your minimum, design spaces and driveways to the County standards, and keep parking on your lot unless you secure and record approved off‑site spaces within 300 feet. ADUs have special state‑law breaks, and you can sometimes share or reduce parking with a solid study and approvals.

Source References

§ 4.30.010–.020 (Purpose; General provisions) — Off‑Street Parking and Loading.
§ 4.30.030 (Parking spaces required—Residential; Table 4.30‑1 and notes).
§ 4.30.040 (Parking spaces required—Nonresidential; Table 4.30‑2).
§ 4.30.050 (Shared/Mixed‑use parking).
§ 4.30.060 (Special parking provisions: compact, motorcycle/bicycle, storage, accessible).
§ 4.30.070 (Parking design standards; stall/aisle/driveway/front‑yard rules).
§ 4.30.080 (Location of parking; off‑site rules).
§ 4.30.090 (Loading).
§ 4.30.100 (Parking exception).
§ 4.10.015(I) (ADU parking and exemptions).
Article 1 guidance on Articles/Chapters and use of the parking chapter. § 1.20.010–.020.

Sources

Retrieved passages

Santa Clara County Zoning Code (§ 4.30.020.) High relevance
CGBSC § 4.30.080 (§ 4.30.080) High relevance
CGBSC § 13 (§ 13) High relevance
Santa Clara County Zoning Code (§ 4.30.090.) High relevance
CBC § 1 (Chapter 11A) Medium relevance
CBC § 6 (Chapter 11B) Medium relevance
Santa Clara County Zoning Code (Section shall) Medium relevance
Santa Clara County Zoning Code (§ 1.30.030) Medium relevance

Cited sections

§ 4.30.010–.020 (Purpose; General provisions) — Off‑Street Parking and Loading. (§ 4.30.010)
§ 4.30.030 (Parking spaces required—Residential; Table 4.30‑1 and notes). (§ 4.30.030)
§ 4.30.040 (Parking spaces required—Nonresidential; Table 4.30‑2). (§ 4.30.040)
§ 4.30.050 (Shared/Mixed‑use parking). (§ 4.30.050)
§ 4.30.060 (Special parking provisions: compact, motorcycle/bicycle, storage, accessible). (§ 4.30.060)
§ 4.30.070 (Parking design standards; stall/aisle/driveway/front‑yard rules). (§ 4.30.070)
§ 4.30.080 (Location of parking; off‑site rules). (§ 4.30.080)
§ 4.30.090 (Loading). (§ 4.30.090)
§ 4.30.100 (Parking exception). (§ 4.30.100)
§ 4.10.015(I) (ADU parking and exemptions). (§ 4.10.015)
Article 1 guidance on Articles/Chapters and use of the parking chapter. § 1.20.010–.020. (Article 1)
SantaClaraCounty_ZoningCode.md

Official Santa Clara County code library

Frequently asked questions

How many parking spaces does a single-family house need in unincorporated Santa Clara County?

Two off‑street spaces per dwelling are required, and at least one must be covered (garage or carport). Tandem parking is allowed for two‑space layouts, and there are front‑yard and driveway limits you must observe. See § 4.30.030 and § 4.30.070(A).

Can I expand my existing single-family home if I don’t meet today’s parking standards?

Yes. Existing single‑family residences can be expanded without adding parking, so long as they remain single‑family, do not further reduce on‑site spaces, and do not lessen compliance with any specific parking rule. See § 4.30.020(B).

What are the off-site parking rules?

Off‑site spaces can be approved if they are within 300 feet, convenient and accessible, and secured by deed, long‑term lease, or easement recorded before construction. Shared/mixed‑use plans require a parking study and a recorded shared‑use agreement. See § 4.30.080 and § 4.30.050(C)–(D).

When can I reduce required parking for a commercial project?

Only through discretionary approval with findings—examples include older areas without historic off‑street parking, close proximity to transit, unique low‑parking uses, or constrained lots. A qualified parking study is typically required. See § 4.30.100 and § 4.30.040(D).

Do I have to replace parking if I convert my garage to an ADU?

No. If you convert a garage or carport to a standard ADU, you don’t have to replace the lost covered parking for the primary residence. See § 4.10.015(I)(3) “Retention of Parking.”

Are there exemptions from ADU parking?

Yes. No ADU parking is required if the unit is within ½ mile of transit, inside an existing structure, in the -h Historic Preservation Combining District, where on‑street permits are required but not offered to the ADU, or near a qualifying car‑share. Evidence is required. See § 4.10.015(I)(3).

What loading spaces do I need for a warehouse over 10,000 square feet?

Provide at least one off‑street loading space, plus one more for each additional 20,000 sq ft. Each loading space must be 10 ft by 30 ft by 15 ft high and buffered from residential lots by at least 50 ft (or enclosed). See § 4.30.090.

Can I count compact stalls or bike/motorcycle spaces toward my total?

Yes. Compact stalls can make up to 25% of required parking in certain projects, and bike/motorcycle spaces can earn small credits toward auto space totals, subject to caps and design rules. See § 4.30.060(A)–(B).

How wide can my driveway be in the front yard?

Driveways and parking areas together may occupy no more than 40% of the lot’s street frontage width and no more than 40% of the front‑yard area; lawn parking is prohibited. Some exceptions apply. See § 4.30.070(A)(7)–(8).

Do shared parking agreements need to be recorded?

Yes. The County requires a recorded agreement that runs with the land for shared or cooperative parking arrangements, along with any required parking study. See § 4.30.050(C)–(D).

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