Local zoning · San Mateo County

San Mateo County — Parking

Q: Do I use the general parking schedule or my PUD/precise plan?

If your parcel is subject to a PUD or precise plan, that document’s parking provisions control where they conflict with the general schedule; otherwise use the county schedule in § 8.344.030 . Verify the parcel’s zoning/PUD status with County planning.

Q: What is the minimum size for a standard parking stall in unincorporated San Mateo County?

The baseline stall area is 171 sq ft per required off‑street parking space (measured exclusive of aisles). Compact stalls may be 128 sq ft for up to 50% of required spaces in qualifying affordable housing density‑bonus projects — see § 8.344.020 .

Q: How many loading spaces do I need for a commercial building?

Provide 1 loading space for the first 5,000 sq ft of floor area and 1 additional loading space for each additional 10,000 sq ft . Each loading space should be at least 10 ft × 25 ft with 15 ft vertical clearance, with maneuvering space provided — see § 8.114.120(6) .

Q: Are there special rules for parking adjacent to residential zones?

If a parking area for >10 vehicles adjoins or faces an R‑E, R‑1, R‑2, or R‑3 District, the parking must be effectively screened by a 6 ft masonry wall (exceptions/alternatives may be approved) — § 8.344.050(a)(1) .

Q: Who can approve a reduction in required parking numbers?

The Director of Planning and Building may approve exceptions to modify the number, size, location or design of required parking where extenuating circumstances exist; more significant modifications or off‑site/shared parking typically require a Use Permit and Planning Commission action. See district exception language and Use Permit findings.

Parking under the San Mateo County local zoning and planning code, with the controlling citations.

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Last reviewed: July 3, 2026

Overview

This page explains how the San Mateo County zoning and development ordinance controls parking, loading, and bicycle parking in the unincorporated areas of San Mateo County. It summarizes the county's off‑street parking standards (size, location, counts), maintenance/landscaping and loading rules, bicycle requirements and the administrative exceptions process, and how special districts (PUDs and overlays) can change the baseline rules. For plan-making or building permits, cross‑check these standards against the applicable site’s district rules and any precise plan or PUD conditions. See the county zoning and development standards pages for related procedures.

Where to look in the code (quick)

Off‑street parking schedule and general rules: § 8.344.030 and § 8.344.020
Parking area development, screening, surfacing, landscaping: § 8.344.050
Bicycle parking rules: § 8.114.070
Loading spaces, handicapped spaces and related sizing: § 8.114.120
Off‑site/shared parking Use Permit findings and Director exceptions: specific district sections (examples below) and the Use Permit finding rules referenced in the code

Key Countywide standards (plain summary linked to code)

Minimum stall area: each off‑street parking space must be at least 171 sq ft (usable area, exclusive of aisles) unless compact car exceptions apply; see § 8.344.020 .
Compact car allowance: up to 50% of required spaces may be reduced to 128 sq ft for housing developments granted a density bonus — § 8.344.020 .
Location for non‑residential parking serving H, C or M zones: may be provided off‑site within 1,000 ft — § 8.344.020(c) .
Surfacing and drainage: parking areas >10 spaces must be paved (asphalt or Portland cement) and graded/drained — § 8.344.050(a)(2) .
Screening: parking for >10 vehicles abutting residential districts must be effectively screened (masonry wall or approved alternative) 6 ft high (except in required front yards) — § 8.344.050(a)(1) .
Landscaping: parking lots >10 spaces must provide landscaped buffers and at least 5% (or where noted 10%) of total parking area in living landscaping depending on chapter/district — see § 8.344.050(a)(4) and district rules § 8.114.120(5) .
Handicapped parking: required counts, sizes and locations are prescribed; e.g., 1 accessible stall for 1–40 total spaces, 2 for 41–80, etc.; accessible stall dimensions and loading areas are specified — § 8.114.120(7) .
Loading: at least 1 loading space for the first 5,000 sq ft plus 1 additional for each additional 10,000 sq ft; each loading space 10 ft × 25 ft with 15 ft vertical clearance — § 8.114.120(6) .
Bicycle parking: bicycle parking requirements apply to all uses that require automobile parking; the county sets number/type rules and allows Director exceptions in constrained sites — § 8.114.070 and exception language in district chapters (see examples) .
Exceptions/Modifications: the Director of Planning and Building can grant exceptions to count, size, location or design of required parking and bicycle parking when extenuating circumstances exist; the Planning Commission can require additional parking or modify Use Permits for off‑site/shared parking — see district language and Use Permit rules § 8.132.090, § 8.130.100 and the off‑site parking findings referenced in the code .

Note: for building code requirements (clearances, accessible route to entrances, EV ready rules), consult the California Building Standards Code.

District-by-district (selected, where parking rules are explicitly tied to district or PUD)

Below are district summaries in the County code where parking, loading, or bicycle parking rules appear explicitly or where PUDs/Pprecise plans establish site‑specific parking obligations. All apply only in the unincorporated areas.

General (Zoning & Parking Chapters) — where most projects start

Purpose / typical uses: applies to all zoning districts in unincorporated San Mateo County to implement off‑street parking requirements for new/main buildings and enlargements. See Chapter references § 8.344.020 and § 8.344.030 for the required schedule and measurement rules.
Key dimensional/tech standards: 171 sq ft per standard stall (compact allowance to 128 sq ft for certain affordable housing density bonus projects); ingress/egress and no required parking within front yard (with limited exceptions) — § 8.344.020.
Where it applies: countywide baseline standard for unincorporated areas; many PUDs and district chapters reference or supersede the schedule — § 8.344.020/030.

Resource Management — RM (Chapter 8.134) — § 8.134.010–.030

Purpose / typical uses: rural/open‑space, conservation and low‑intensity uses; applied where resource protection is primary.
Parking implications: baseline off‑street parking rules apply but RM often restricts built coverage and access; special review criteria and development review (per § 8.296) control siting of parking and may limit amount or require mitigation. Verify site‑specific RM overlay number for additional constraints.

Neighborhood Mixed Use – NMU‑ECR (Chapter 8.132) — § 8.132.010–.040

Purpose / typical uses: mixed retail, offices and higher‑density housing along El Camino Real in North Fair Oaks. Emphasizes multiple modes including transit and bicycling; parking expectations are balanced against multimodal access.
Parking/bicycle rules: the chapter allows exceptions and shared parking arrangements, and explicitly notes the Director may grant exceptions to modify bicycle parking counts/location/design where site constraints exist — § 8.132.090 (exceptions language) .
Practical note: NMU areas aim to reduce auto‑centric parking; applicants should expect design review and to justify any off‑site/shared parking via Use Permit findings. Verify with the district text and the North Fair Oaks Community Plan.

Commercial Mixed Use‑3 – CMU‑3 (North Fair Oaks) (Chapter 8.126) — § 8.126.010–.040

Purpose / typical uses: supports locally‑oriented commercial plus multifamily housing; encourages multimodal access.
Parking rules: CMU‑3 implements the county parking schedule but emphasizes consistency with the community plan and may require parking design and landscaping per precise plan. See CMU‑3 standards for site design and the general parking schedule § 8.344.030.

Medium High Density Residential designation (within residential chapters) — (see § 8.114.120)

Purpose / typical uses: multi‑family residential uses and related community services.
Parking and loading specifics in chapter: landscaping for uncovered parking 10% of parking area; 1 loading space per 5,000 sq ft (plus 1 per additional 10,000 sq ft); handicapped parking table and stall dimensions are specified in the chapter — § 8.114.120(5–7).
Practical note: parking counts for multi‑family are often shown on precise development plans or PUD approvals; PUDs may set minimum parking and guest vs. resident allocations (examples in PUDs such as PUD‑139 and others). See the specific PUD ordinance language where applicable.

Planned Unit Developments (PUDs) and Precise Plans — examples (various PUD chapters)

Many PUD chapters (PUD‑119, PUD‑120, PUD‑128, PUD‑132, etc.) set site‑specific parking counts, guest/resident splits, and minimum/maximums that supersede the county schedule for that parcel. Examples require maintenance of a specified number of parking spaces (e.g., minimum of 63 covered spaces; 142 uncovered in other PUDs) — see specific PUD sections in the code (example language in several PUDs) .
Practical note: always check the parcel’s PUD/precise plan or file number; PUD provisions control where they conflict with the general parking chapters.

Most decision‑relevant standards (quick reference table)

Topic	County rule / standard (summary)	Code Reference
Standard stall area	171 sq ft per parking space (usable area); compact car option 128 sq ft for up to 50% where density bonus applies	§ 8.344.020
Off‑street parking schedule	Required number of spaces by use set in the parking schedule	§ 8.344.030
Surfacing / drainage	Parking >10 spaces must be paved and drained; wheel stops/curbs to protect sidewalks/planters	§ 8.344.050(a)(2–3)
Screening/height	Screening for parking >10 cars adjacent to residential: 6 ft masonry wall or approved alternative	§ 8.344.050(a)(1)
Landscaping	Minimum landscaped buffer; 5% (general parking areas) or 10% in some districts; 1 tree per ~6 spaces in some chapters	§ 8.344.050(a)(4); § 8.114.120(5)
Handicapped stalls	Counts by lot size (e.g., 1 for 1–40, 2 for 41–80); stall 9 ft × 19 ft with adjacent 5 ft × 19 ft loading zone	§ 8.114.120(7)
Loading spaces	1 space for first 5,000 sq ft, plus 1 per additional 10,000 sq ft; 10 ft × 25 ft, 15 ft vertical clearance	§ 8.114.120(6)
Bicycle parking	Bicycle parking required for uses that require auto parking; standards for long‑term/short‑term and director exception possibilities	§ 8.114.070 and district exceptions § 8.132.090
Off‑site / shared parking	Allowed by Use Permit if findings are met (availability, non‑coincident peak demand, guarantee agreement)	Use Permit findings + district language (see district chapters)

How the county treats exceptions & modifications

The code and district chapters allow the Director of Planning and Building to grant exceptions to modify the number, size, location, or design of required parking (including bicycle parking) where extenuating circumstances exist — see district exception language and the Director/Commission authority in the chapters (example: § 8.132.090).
Off‑site or shared parking is possible via a Use Permit but requires specific findings (availability, demand timing, written agreement with guarantees and County oversight). Expect conditions and possible future County action to require more parking if demand changes — see off‑site parking findings in the ordinance language.

Checklist (what an applicant must satisfy for parking submittals in unincorporated San Mateo County)

Show off‑street parking count per the county schedule or site‑specific PUD/precise plan (§ 8.344.030)
Dimension every typical stall (show 171 sq ft or compact stall 128 sq ft if applicable) and show aisle widths (§ 8.344.020)
Provide handicapped stall count, layout and access route per § 8.114.120
Provide loading space count and show 10 ft × 25 ft stalls with 15 ft clearance where required (§ 8.114.120(6))
Show landscaping, street buffer, tree counts and irrigation for parking lots >10 spaces (§ 8.344.050(a)(4) and district rules)
Show surfacing, drainage details, bumpers/wheel stops and no overhang into sidewalks (§ 8.344.050(a)(2–3))
Provide bicycle parking counts/type and location per § 8.114.070, or include justification for an exception
If proposing off‑site/shared parking, attach the written agreement and demonstrate the Use Permit findings can be met (Use Permit findings per code)
Verify whether the parcel is governed by a PUD or precise plan that changes parking requirements; attach PUD conditions if applicable (PUD provisions supersede general rules)

Risks & Ambiguities

Issue	Why it matters	What to verify
PUD / precise‑plan controls	A PUD can set site‑specific minimums that override the general schedule (common in North Fair Oaks PUDs)	Confirm whether the parcel has a PUD or precise plan and read its parking clauses — verify with County planning files.
Which parking schedule version applies	The code has cross‑references and some older sections were amended or replaced	Use the applicable code sections for current ordinance edition and check for recent amendments or replacements; verify with the Planning Dept.
Bicycle parking counts vs. design	Districts allow Director exceptions where site constraints exist — applicants may rely on existing racks	If seeking an exception, document existing bicycle facilities or site constraints per § 8.114.070 and the district exception language.
Off‑site/shared parking durability	Written agreements must guarantee long‑term availability — County can later require more parking	Ensure recorded agreements or covenants satisfy County Counsel and Use Permit findings.
Front‑yard parking exceptions	Some narrow, steep, or Midcoast lots may allow front yard parking	Confirm lot area, location (Midcoast exceptions), slope and whether the specific exception applies before designing front‑yard parking — see § 8.344.020(b).

Plain‑English summary

If you are building or changing a use in unincorporated San Mateo County, you must provide off‑street parking that meets the county’s schedule and dimensional rules (standard stalls ~171 sq ft, compact allowances for certain affordable housing), provide required handicapped and loading spaces, landscape and properly pave lots over 10 spaces, and provide bicycle parking or justify exceptions — district PUDs and the Director can modify counts or details in special cases. Always check whether a PUD/precise plan or district chapter supersedes the general parking schedule. See the county zoning and development standards pages and consult planning staff for parcel‑specific direction.

Source References

San Mateo County Code — Off‑street parking general requirements: § 8.344.020
San Mateo County Code — Off‑street parking schedule reference: § 8.344.030
San Mateo County Code — Parking areas development, surfacing, screening, landscaping: § 8.344.050
San Mateo County Code — Bicycle parking requirements: § 8.114.070
San Mateo County Code — Medium High Density Residential: loading, landscaping, handicapped parking: § 8.114.120
NMU‑ECR district (neighborhood mixed use): Chapter 8.132 (district purposes and exception language) § 8.132.010–.040 and related exception clauses
CMU‑3 district (Commercial Mixed Use‑3): Chapter 8.126 (purposes and relationship to Community Plan) § 8.126.010–.040
Examples of PUD parking conditions and site‑specific minimums (PUD text excerpts) — various PUDs in the code (e.g., PUD‑139, PUD‑140) — see PUD ordinance language in the county code files
Off‑site/shared parking Use Permit findings and implementation language (district references): referenced in district chapters and Use Permit rules (see district language and Use Permit findings)
For building code (accessibility, stall marking to building, EV readiness) see the California Building Standards Code.

Sources

Retrieved passages

San Mateo County Zoning Code (Title 8) High relevance
San Mateo County Zoning Code (Title 8) High relevance
San Mateo County Zoning Code (Section 6568.8.) High relevance
San Mateo County Zoning Code (SECTION D.) High relevance
San Mateo County Zoning Code (Title 8) High relevance
San Mateo County Zoning Code (Section 8.344.030) High relevance
San Mateo County Zoning Code (Title 8) Medium relevance
San Mateo County Zoning Code (Section 8.132.090.) Medium relevance

Cited sections

Official San Mateo County code library

Frequently asked questions

Do I use the general parking schedule or my PUD/precise plan?

If your parcel is subject to a PUD or precise plan, that document’s parking provisions control where they conflict with the general schedule; otherwise use the county schedule in § 8.344.030. Verify the parcel’s zoning/PUD status with County planning.

What is the minimum size for a standard parking stall in unincorporated San Mateo County?

The baseline stall area is 171 sq ft per required off‑street parking space (measured exclusive of aisles). Compact stalls may be 128 sq ft for up to 50% of required spaces in qualifying affordable housing density‑bonus projects — see § 8.344.020.

Are there landscaping requirements for parking lots?

Yes. Parking areas with more than 10 spaces must provide a street buffer and internal landscaping (a minimum percentage of the lot area — commonly 5%, with 10% in some chapters) and tree planting (for example 1 tree per ~6 spaces in some districts). See § 8.344.050(a)(4) and district rules § 8.114.120(5).

How many loading spaces do I need for a commercial building?

Provide 1 loading space for the first 5,000 sq ft of floor area and 1 additional loading space for each additional 10,000 sq ft. Each loading space should be at least 10 ft × 25 ft with 15 ft vertical clearance, with maneuvering space provided — see § 8.114.120(6).

What are the bicycle parking requirements and can I request a reduction?

Bicycle parking applies to all uses that require automobile parking; the county sets long‑term and short‑term standards in § 8.114.070. The Director may grant an exception to modify the number, location or design of bicycle parking where existing facilities are adequate or site constraints exist — see district exception language.

Can required parking be provided off‑site?

Yes, off‑site or shared parking can be authorized by a Use Permit if the ordinance’s findings are met (availability, non‑coincident peak demand, adequate guarantee agreement, etc.). The County requires a written agreement and can later require additional parking if demand changes — see the Use Permit and district language for off‑site parking requirements.

Are there special rules for parking adjacent to residential zones?

If a parking area for >10 vehicles adjoins or faces an R‑E, R‑1, R‑2, or R‑3 District, the parking must be effectively screened by a 6 ft masonry wall (exceptions/alternatives may be approved) — § 8.344.050(a)(1).

Do I have to provide accessible (handicapped) stalls, and how many?

Yes. The code lists required accessible stall counts by lot size (e.g., 1 for 1–40 total spaces; 2 for 41–80, etc.). Stall dimensions and adjacent loading/unloading area requirements are specified in § 8.114.120(7).

If my lot is small or steep, can I put a parking space in the front yard?

Front‑yard parking is generally prohibited for required spaces, but limited exceptions exist — e.g., uncovered spaces for single‑family dwellings on parcels <3,500 sq ft in Midcoast areas or other narrow/steep lot exceptions enumerated in § 8.344.020(b). Verify whether your lot meets those narrow exceptions.

Who can approve a reduction in required parking numbers?