Local zoning · Los Altos Hills

Los Altos Hills — Parking

Q: What parking is required for a new single‑family house in Los Altos Hills?

A new primary dwelling must provide surfaced off‑street parking for a minimum of four cars , including at least two covered spaces. Each parking space must be at least 10 ft × 20 ft , have unobstructed access, and meet setback rules (local rule § 10-1.601 ) .

Q: Do ADUs in Los Altos Hills need separate parking?

ADU parking is governed by the ADU article; the town lists several specific exemptions (for example, ADUs within ½ mile of transit, ADUs created by converting existing space, or when a garage is demolished with the ADU). ADU parking and siting rules are in § 10-1.1404 ; verify with the Planning/Building Department for ministerial approval requirements . (/us/california/california-adu-laws)

Q: How many parking spaces does an SB 9 unit need?

SB 9 units require one on‑site parking space per unit (minimum 10×20 ft). The ordinance also contains a floor‑area based table that may require more spaces depending on total floor area on the lot; tandem and setback parking are allowed in many cases ( § 10-1.1505 ) .

Q: Can parking be in a setback or be tandem?

Yes — for SB 9 units and for ADU parking the code explicitly allows tandem parking on a driveway and parking located in setbacks unless the Community Development Director makes specific findings of infeasibility based on site, topography, or fire/life‑safety conditions ( § 10-1.1505 and § 10-1.1404 ). Always prepare fire/access evidence if proposing parking in a setback or tandem configuration .

Q: Are there bicycle parking requirements in Los Altos Hills zoning?

No explicit bicycle parking counts or formulas were found in the retrieved Town Title 10 zoning materials. Bicycle parking and related green‑building requirements are typically addressed by the California Green Building Standards (CalGreen) / Title 24; confirm bicycle parking expectations with the Building Department for your project type (Not found in retrieved materials for Title 10; see state standards) .

Q: Where are loading zone/large‑vehicle loading standards stated?

The Los Altos Hills Title 10 zoning that was retrieved does not contain a commercial loading‑space schedule. For loading zone dimensions, ADA access and loading rules are established in the California Building Code (Title 24); expect project‑specific loading conditions under conditional use/permit authority when Title 10 is silent ( § 10-1.1007 ) .

Q: Do short‑term rentals have special parking rules?

Yes. The Town requires all short‑term rental parking to be provided on‑site in approved parking areas and prohibits overnight on‑street parking for STRs under § 10-1.1204 ; conditional permits can impose additional off‑street parking requirements if needed .

Q: Who decides exceptions or variances to parking requirements?

The Staff Committee, Planning Commission, or City Council can approve variances or conditional permits when findings can be made under the variance/conditional use provisions; parking reductions or site‑specific conditions are typically processed under § 10-1.1007 and related variance procedures .

Q: If Title 10 is silent on a parking detail, what controls?

If the local zoning code is silent (for example, bicycle parking counts or detailed loading rules), apply the California Building Standards Code and CalGreen; additionally, the Planning Department may attach conditions under conditional use or site development procedures — always verify with Planning and Building staff (state codes referenced) .

Parking under the Los Altos Hills local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

This page explains how the Town of Los Altos Hills regulates parking for residential development, SB 9 units, accessory dwelling units (ADUs), and conditional or special uses under the local zoning law (Title 10). The town’s zoning code places most parking rules in Article 6 — Off‑Street Parking and in ADU and SB 9 articles; other topics (bicycle parking, formal loading standards) are not specified in the zoning text and default to state codes where noted. See the town’s zoning policy overview for context. (/us/california/los-altos-hills/zoning)

Key local rules (plain-English, code-backed)

Minimum off‑street parking for a new primary dwelling: 4 spaces total, including at least 2 covered spaces for each new primary dwelling; each space must be at least 10 ft × 20 ft; spaces must have unobstructed access and comply with setback rules. This is the baseline for single‑family development under the town’s Off‑Street Parking article § 10-1.601 .
Accessory Dwelling Units (ADUs) follow the ADU article rules: the Town allows a range of parking exemptions and flexible siting (tandem or in setbacks) consistent with state ADU law; ADU parking and access rules are in § 10-1.1404 and related ADU provisions (see incentives at § 10-1.1407) . See the local ADU summary for background. (/us/california/los-altos-hills/adu)
SB 9 units (state-authorized lot splits / two‑unit parcels) have a distinct parking table in § 10-1.1505: generally one on‑site parking space per SB 9 unit (10×20 ft) with an explicit tabulation that ties required spaces to unit floor area (1 space for units <1,000 sq ft up to 4 spaces for larger totals; some spaces may be in setbacks or tandem; certain transit/proximity exemptions apply) .
Driveway and vehicle access standards (sight distance, driveway width, driveway location relative to property lines and fire turnarounds) are in the Site Development / Road standards (§ 10-2.1201 and related), including a stated driveway width range of 12–14 ft (excluding parking/back‑up areas) and limits on driveway placement near property lines; see the Site Development article for design review and public‑right‑of‑way requirements . (/us/california/los-altos-hills/design-review)
Short‑term rental rules require all short‑term rental parking to be provided on-site in approved parking areas; on‑street overnight parking is not allowed for STRs (§ 10-1.1204) .
The zoning code does not define separate bicycle parking or commercial loading formulas in Title 10; those matters are not found in the retrieved zoning materials and are typically handled by the state building code and green‑building standards (Title 24 / CalGreen) for non-residential projects or where local zoning is silent — see the California Building Standards Code for accessibility, loading, and related design standards. (/us/california/building-codes) .

District-by‑district breakdown (how parking rules apply by district)

R-A (Residential‑Agricultural)

Purpose & typical uses: Primary dwellings, agriculture, residential care, emergency shelters and limited accessory uses as listed in § 10-1.701 .
Parking rules: Off‑street parking for residential uses in R‑A is governed by Article 6 (Off‑Street Parking); the R‑A code cross‑references Article 6 via § 10-1.705 (see § 10-1.601 for the specific residential parking minimums) .
Key dimensional standards affecting parking: setback and development area rules in Article 5 apply to siting of parking and driveways (see Development Standards) (/us/california/los-altos-hills/development-standards). Verify lot‑specific setbacks under § 10-1.505 (referenced throughout) — not quoted here; see the Development Standards page for illustrations.

OSR (Open Space Reserve)

Purpose & typical uses: agriculture, forest preserves and open space, limited accessory structures (§ 10-1.801–§ 10-1.803) .
Parking rules: OSR refers to the general Off‑Street Parking article for requirements; because OSR parcels are often not developed with conventional dwellings, parking needs are handled on a project basis and may be conditioned under conditional use/permit authority (see Article 6 and conditional use permit findings) .
Practical point: expect site‑specific parking and landscape screening requirements where development occurs (Planning Commission review per § 10-1.508 and landscape screening clauses) .

SB 9 lots / SB 9 units (special rules inside R‑A)

Purpose: state‑authorized lot splits and the construction of up to two dwelling units under Article 15 (SB 9) § 10-1.1505 .
Parking rules: One on‑site parking space per SB 9 unit, 10×20 ft minimum; number of required spaces may increase based on unit floor area (the ordinance contains a floor‑area to parking table inside § 10-1.1505). Tandem and setback parking are allowed unless the Community Development Director finds them infeasible for site/fire reasons; exemptions apply if the parcel is within 1/2 mile of major transit or has car‑share proximity, among others .
Where it applies: any SB 9 lot that meets Article 15 eligibility inside the R‑A district (§ 10-1.1503) .

Decision‑relevant at‑a‑glance table

Topic	Local standard / rule	Code reference
Minimum parking for a new primary dwelling	4 spaces, at least 2 covered; each space 10 ft × 20 ft; unobstructed access; must meet setbacks	§ 10-1.601
ADU parking & exemptions	ADU parking subject to Article 14; multiple exemptions (within ½ mile transit, historic district, garage demolition, car share, on‑street permit situations); flexible siting/tandem allowed	§ 10-1.1404; incentives § 10-1.1407
SB 9 unit parking	1 on‑site space per SB 9 unit (10×20); floor area table modifies space count; tandem and setback parking allowed unless infeasible; transit/car‑share exemptions	§ 10-1.1505
Driveway / access minimum widths & location	Driveways to meet sight distance, safety; width 12–14 ft (excl. parking/back‑up); 10 ft from property lines generally prohibited	§ 10-2.1201
Short‑term rentals	All STR parking must be on‑site; no overnight street parking allowed	§ 10-1.1204
Bicycle parking & loading	Not found in retrieved LAH zoning materials; state codes / CalGreen and Title 24 cover bicycle parking and loading/accessibility for buildings	Not found in Title 10; see California codes (/us/california/building-codes)

Practical guidance / interpretation notes

The Town’s default single‑family parking bar is generous relative to many cities: 4 spaces (min.) with 2 covered per new primary dwelling (§ 10-1.601) — plan garages/carports and driveway layouts to meet the 10×20 ft minimum and to preserve unobstructed access and fire access turnarounds .
For ADUs, do not automatically plan to provide a separate parking stall — ADU parking is often exempt under the local ADU rules and state law; review § 10-1.1404 carefully and confirm whether your parcel meets the transit, historic, demolition, or car‑share exemptions before adding parking that could consume yard area . (/us/california/california-adu-laws)
SB 9 units have an explicit parking-table logic — if you propose SB 9 units check the floor‑area bracket in § 10-1.1505 to know how many total on‑lot spaces the lot must accommodate (and whether the town will allow tandem and setback parking) .
If your project reduces existing parking (garage converted to ADU, for example), the ordinance and state ADU law limit when the town may require replacement spaces — see ADU Article § 10-1.1404 and state ADU guidance; coordination with the Building Department is required for ministerial ADU approval .
Where the LAH zoning code is silent (bicycle parking counts, formal off‑street loading for commercial uses, detailed ADA loading dimensions), apply the California Building Standards Code / CalGreen and accessibility chapters; examples of state standards for loading zones and bicycle parking requirements are in Title 24 / CalGreen .

Checklist

Confirm project zoning and whether parcel is in R‑A, OSR, or an SB 9 lot; cite § 10-1.701, § 10-1.801, § 10-1.1503 as applicable .
Meet minimum residential parking: 4 spaces (2 covered) for a new primary dwelling; 10×20 ft minimum per space; unobstructed access and setback compliance (§ 10-1.601) .
If adding an ADU, document whether any ADU parking exemptions apply and follow § 10-1.1404; prepare ministerial ADU materials for Building Dept. review . (/us/california/los-altos-hills/adu)
For SB 9 proposals, use the floor‑area to parking table inside § 10-1.1505 to size required on‑site spaces and plan for tandem/setback options or justify infeasibility if seeking alternatives .
Design driveways and access to meet Site Development standards and Fire Department criteria (driveway width, sight lines, location from property lines) per § 10-2.1201 .
For commercial or conditional uses, quantify parking to accommodate max foreseeable assemblies and show on plan per conditional use findings; reference § 10-1.1007 and conditional use parking guidance .
Where bicycle parking or loading is required by project type, reference Title 24 / CalGreen and applicable accessibility/loading sections (state code files) .
Verify whether any overlay district, historic district, or easement restricts parking location on the lot (see § 10-1.1505(d) and overlay / historic preservation pages) (/us/california/los-altos-hills/overlay-districts) (/us/california/los-altos-hills/historic-preservation)

Risks & Ambiguities

Issue	Why it matters	What to verify
Bicycle parking requirements absent from Title 10	LAH zoning does not provide bike‑parking counts — projects may be noncompliant with state/local energy/green codes if bicycle parking is omitted	Confirm bicycle parking & short‑term/long‑term counts with Building Dept. or apply CalGreen guidance (Title 24)
Loading zones / commercial loading formula missing	No local loading standards means project may rely on state building code or be conditioned by Planning Commission	For commercial or institutional uses consult Title 24 / CBC loading sections and discuss with Planning / Building staff; verify if conditional use permit will impose site-specific loading requirements
Driveway setbacks vs. allowed parking in setbacks	Town allows parking in setback areas for SB 9 and ADU parking in some cases, but the Community Development Director can deny where infeasible	If proposing parking in a setback, prepare findings addressing fire access, topography and sight distance; expect review under § 10-1.1505 and ADU rules
Conflicts with private covenants / HOA rules	Title 10 states local code does not override private restrictions	Verify CC&Rs, easements, and recorded restrictions before relying on municipal allowances (§ 10-1.102)
ADU parking replacement after garage conversion	State ADU law and LAH ADU article limit when replacement of parking can be required; ambiguous cases can delay permits	Confirm applicability of ADU exemptions in § 10-1.1404 and consult Building Department for ministerial review steps

Plain‑English summary

Los Altos Hills requires fairly large off‑street parking for new single‑family homes (minimum 4 spaces, 2 covered, 10×20 ft each in § 10-1.601), but is flexible for ADUs and SB 9 units (tandem and setback parking allowed; ADU exemptions apply). The local zoning code does not set bicycle parking or detailed loading formulas — those are handled by state building/green codes or by project‑specific conditions; always verify with Planning/Building for parcel‑specific constraints and fire access requirements .

Source References

Town of Los Altos Hills Zoning Law, Article 6 — Off‑Street Parking: § 10-1.601 (Residential uses) . (Downloaded from https://ecode360.com/LO4964)
Town of Los Altos Hills ADU article: § 10-1.1404 (Parking and access) and § 10-1.1407 (incentives) . (Downloaded from https://ecode360.com/LO4964)
Town of Los Altos Hills SB 9 article: § 10-1.1505 (SB 9 required parking and floor‑area table) . (Downloaded from https://ecode360.com/LO4964)
Town of Los Altos Hills District descriptions: § 10-1.701 (R‑A) and § 10-1.801 (OSR); cross‑references to Article 6 via § 10-1.705 .
Driveway / Site Development standards (driveway widths, access): § 10-2.1201 and related Site Development provisions .
Short‑term rental parking requirement: § 10-1.1204 (on‑site parking required) .
California Building Standards Code / Title 24 — accessibility, loading, and other off‑street facility guidance; and 2025 CalGreen (bicycle parking references) — used where Title 10 is silent .

Sources

Retrieved passages

Los Altos Hills Zoning Code (§ 10-1.1505) High relevance
Los Altos Hills Zoning Code (Section 21155) Medium relevance
Los Altos Hills Zoning Code (Section 10-1.505) Medium relevance
Los Altos Hills Zoning Code (chapter as) Medium relevance
Los Altos Hills Zoning Code (§ 10-1.503.) Medium relevance
Los Altos Hills Zoning Code (Section 21155) Medium relevance
Los Altos Hills Zoning Code (chapter are) Medium relevance
Los Altos Hills Zoning Code (§ 10-2.1402.) Medium relevance
Los Altos Hills Zoning Code (§ 1) Medium relevance
Los Altos Hills Zoning Code (§ 10-1.1007) Medium relevance
Los Altos Hills Zoning Code (Section 10-1.202) Medium relevance

Cited sections

Official Los Altos Hills code library

Frequently asked questions

What parking is required for a new single‑family house in Los Altos Hills?

A new primary dwelling must provide surfaced off‑street parking for a minimum of four cars, including at least two covered spaces. Each parking space must be at least 10 ft × 20 ft, have unobstructed access, and meet setback rules (local rule § 10-1.601) .

Do ADUs in Los Altos Hills need separate parking?

ADU parking is governed by the ADU article; the town lists several specific exemptions (for example, ADUs within ½ mile of transit, ADUs created by converting existing space, or when a garage is demolished with the ADU). ADU parking and siting rules are in § 10-1.1404; verify with the Planning/Building Department for ministerial approval requirements . (/us/california/california-adu-laws)

How many parking spaces does an SB 9 unit need?

SB 9 units require one on‑site parking space per unit (minimum 10×20 ft). The ordinance also contains a floor‑area based table that may require more spaces depending on total floor area on the lot; tandem and setback parking are allowed in many cases (§ 10-1.1505) .

Can parking be in a setback or be tandem?

Yes — for SB 9 units and for ADU parking the code explicitly allows tandem parking on a driveway and parking located in setbacks unless the Community Development Director makes specific findings of infeasibility based on site, topography, or fire/life‑safety conditions (§ 10-1.1505 and § 10-1.1404). Always prepare fire/access evidence if proposing parking in a setback or tandem configuration .

Are there bicycle parking requirements in Los Altos Hills zoning?

No explicit bicycle parking counts or formulas were found in the retrieved Town Title 10 zoning materials. Bicycle parking and related green‑building requirements are typically addressed by the California Green Building Standards (CalGreen) / Title 24; confirm bicycle parking expectations with the Building Department for your project type (Not found in retrieved materials for Title 10; see state standards) .

Where are loading zone/large‑vehicle loading standards stated?

The Los Altos Hills Title 10 zoning that was retrieved does not contain a commercial loading‑space schedule. For loading zone dimensions, ADA access and loading rules are established in the California Building Code (Title 24); expect project‑specific loading conditions under conditional use/permit authority when Title 10 is silent (§ 10-1.1007) .

Do short‑term rentals have special parking rules?

Yes. The Town requires all short‑term rental parking to be provided on‑site in approved parking areas and prohibits overnight on‑street parking for STRs under § 10-1.1204; conditional permits can impose additional off‑street parking requirements if needed .

Who decides exceptions or variances to parking requirements?

The Staff Committee, Planning Commission, or City Council can approve variances or conditional permits when findings can be made under the variance/conditional use provisions; parking reductions or site‑specific conditions are typically processed under § 10-1.1007 and related variance procedures .

If Title 10 is silent on a parking detail, what controls?