Local zoning · Los Altos

Los Altos — Design Review

Q: Are small fences or walls subject to design review?

Solid fences and walls taller than 6 feet are listed as triggers for administrative design review in § 14.77.020 ; ordinary shorter fences are generally not listed as mandatory triggers. Confirm fence design and location with zoning staff.

Q: How much public notice and how many hearings will my design review get?

Notice for discretionary design review follows § 14.01.130 (mailing to owners within 300 ft , site posting, and publication when required); when hearings are required the code limits design‑only public hearings to no more than three hearings ( § 14.77.100 ). Appeals follow Chapter 14.01.100 timing rules.

Q: Can the Zoning Administrator require design review even if my project seems ministerial?

Yes. § 14.77.060 gives the Zoning Administrator authority to require administrative design review when special circumstances or potential negative community impacts are present; this is discretionary. Verify applicability with Development Services.

Design Review under the Los Altos local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

Los Altos regulates design review as a discrete chapter within Title 14 of the Municipal Code to protect neighborhood character and ensure projects meet objective design standards and public-notice rules. The design review rules set thresholds for three review levels (administrative, Zoning Administrator, and Planning Commission), list exemptions, require specific findings, and tie design review into parking, site-plan, and multimodal review requirements. See the city's rules on Los Altos Zoning for context and the city's Los Altos Parking and Los Altos Development Standards pages for related technical standards. The Design Review chapter is codified at § 14.77.010 et seq.

How Los Altos structures design review (quick map)

What triggers review	Approving body	Key code reference
Small residential / site changes (specified minor work)	Administrative (Development Services Dept.)	§ 14.77.020
New two-story single-family, conversions to two-story, small multifamily (≤5 units), larger exterior additions (>500 sf)	Zoning Administrator (noticed public meeting)	§ 14.77.030
Any new commercial / non-residential building or multifamily with ≥6 units	Planning Commission (noticed public hearing; multimodal review applies)	§ 14.77.040 and § 14.77.080
Exempt items (examples)	No design review required	§ 14.77.050

District-by-district breakdown (how design review commonly applies)

Note: below is a Los Altos‑specific synthesis tied to the code text. Where a district standard is not explicit in the retrieved materials, I mark that as Not found in retrieved materials and advise verification with the Development Services Department.

R-1 (single‑family residential, including R1-10 references)

Purpose: preserve single‑family character and allow limited additions while applying objective design standards for scale, landscaping, and privacy. (Standards for certain single‑family design and “objective design standards” are codified in the Dual Opportunity / single‑family housing chapters.) See rules applicable to single‑family housing and dual‑opportunity developments in § 14.64.100 et seq.
Typical permitted uses: single‑family dwellings, accessory structures, accessory dwelling units (ADUs) subject to separate ADU rules. Relevant ADU rules and design interactions are discussed in Chapter 14.14.
Key dimensional / design points you will see referenced in design review:
- Façade bay limits and articulation when abutting R‑1 (façade planes limited to 48 ft width before break up required) and limitations on balcony glazing facing R‑1 areas: § 14.64 (design standards)
- Landscaping and tree minimums for lots ≥5,000 sf (minimum two medium/large canopy trees) and screening vegetation requirements for second‑story sightlines: § 14.64.110 and related objective standards
Where design review applies: many single‑family projects are still subject to administrative or Zoning Administrator review depending on height and scope per § 14.77.020–.030. ADUs are generally exempt from design review (§ 14.77.050.B), but ADUs on historic properties have separate historic review rules (see Historic chapter and Chapter 12.44 references).

CN — Commercial Neighborhood (CN District)

Purpose / uses: mixed residential/commercial neighborhood scale development, plus downtown‑edge retail and services; additional CN design standards are referenced in Chapter 14.66. See explicit CN design standards and signage rules in the CN chapter (e.g., § 14.40.* and cross‑refs to § 14.66.280).
Typical permitted uses: neighborhood retail, offices, personal services, and residential mixed‑use where allowed (see CN use tables in Title 14). Signage for CN is controlled by § 14.40.160 and Chapter 14.68.
Key design cues that shape design review decisions:
- Service areas placed to rear of lot and required to be architecturally consistent with primary building; bike parking and pedestrian access requirements enforced during site plan and design review (14.66 design and 14.74 parking/site plan rules).
Where design review applies: any new commercial development in CN will require Planning Commission design review if it triggers commercial project review per § 14.77.040; smaller façade or site changes may be processed administratively or by the Zoning Administrator depending on size per § 14.77.020–.030.

CD — Commercial Downtown (CD District)

Purpose: retain and enhance the downtown “village” atmosphere, encourage pedestrian amenities and historic preservation, and permit retail/office/service uses appropriate to downtown cores (§ 14.44.020).
Typical permitted uses: full range of downtown retail, restaurants, offices, and limited residential/mixed‑use where allowed under downtown standards. Historic resource considerations are emphasized.
Design review emphasis:
- Façade composition and storefront rhythm (maintain 25‑ft module downtown), pedestrian‑oriented design, signage that complements architecture — these are enforced through design review findings and the downtown chapter. § 14.77.070 findings reference compatibility with district standards and objective design guidelines.
Where design review applies: new commercial / non‑residential projects in the downtown will always go to Planning Commission per § 14.77.040.

PCF — Public / Community Facilities (PCF District)

Purpose / scope: public and institutional uses such as schools, government buildings, community facilities (PCF code text referenced elsewhere in Title 14).
Exemptions and thresholds: some PCF minor site work (site improvements, exterior alterations, or additions up to 1,000 sq ft) are explicitly exempt from design review under § 14.77.050.E. Larger PCF projects remain subject to design review and applicable site‑plan requirements.
Where design review applies: larger PCF construction will follow the standard level‑based design review triggers; small PCF work under the 1,000 sf threshold is exempt.

PUD / Other overlay or planned districts (PUD/R, PUD/C, etc.)

Purpose: Planned Unit Developments use development standards tailored to the project but are required to meet district‑level maximums and be compatible with adjacent zones (see § 14.62.060–.090). Design review requirements are layered onto PUD approvals; height limits near single‑family zones and landscaping/screening expectations exist.
Where design review applies: PUD projects typically require higher‑level discretionary review and are coordinated with planning commission and possibly city council review depending on entitlements. Verify specific PUD standard references in the PUD chapter for parcel‑specific limits.

Decision‑relevant standards (short table)

Rule / standard	What it controls	Code citation
Administrative design review — when required	Small SFR under 20 ft; additions ≤500 sf; solid walls >6 ft; other limited work	§ 14.77.020
Zoning Administrator review — when required	New two‑story SFR; conversion to two‑story; multifamily ≤5 units; additions >500 sf to multifamily/commercial	§ 14.77.030
Planning Commission review	Any new commercial/non‑residential; multifamily ≥6 units	§ 14.77.040
Exemptions	ADUs (attached/detached), minor window/door replacements, many solar or mechanical installs, certain small PCF work	§ 14.77.050
Design review findings	Consistency with GP, articulation, materials, landscape, screening, parking/circulation, signage, CEQA compliance	§ 14.77.070
Site plan submittal	Site plan required for parking; submitted with discretionary/ministerial permits	§ 14.74.030
Public notice	Mail to owners within 300 ft, site posting, publication for hearings	§ 14.01.130 and § 14.77.090
Multimodal review	Planning Commission design review projects require multimodal transportation review by Complete Streets Commission (housing exempt)	§ 14.77.080

Checklist — what an applicant must satisfy before/with a design review submittal

Confirm review level (administrative / Zoning Administrator / Planning Commission) per § 14.77.020–.040 and prepare for public notice if required.
Completed application and filing fee per Development Services handout (per § 14.01.040 procedures).
Electronic site plan, floor plans, building elevations, landscape plan, materials/color palette, and photometric plan (site plan requirement and submittal lists referenced in § 14.74.030 and preliminary review submittal guidance).
Parking plan and bicycle parking per Chapter 14.74; if no other permit required, parking changes will be processed as an administrative design review (§ 14.74.030.C). Link to the city’s Los Altos Parking page for local parking requirements.
Historic check: if the property is on the Historic Resources Inventory, include Historic Alteration Permit materials per Historic chapter (Chapter 14.93 / 12.44 references). See Los Altos Historic Preservation.
If project is a housing development subject to multimodal review, coordinate with the Complete Streets Commission per § 14.77.080 (housing developments are exempt from Complete Streets review).
Address signage and mechanical screening in plans (sign rules in Chapter 14.68 and mechanical screening per § 14.77.070.H). See Los Altos Signage.

Risks & Ambiguities

Issue	Why it matters	What to verify
Whether an ADU truly is exempt	ADU exemptions are broad but historic properties and certain siting issues can trigger review; ADU parking rules are separate	Confirm ADU exemption under § 14.77.050.B and ADU special historic rules in Chapter 14.14 and historic code. Verify with staff.
Scope that triggers ZA vs. Planning Commission	Minor differences (e.g., 5 units vs 6 units; 500 sf addition thresholds) change public‑notice/hearing needs	Confirm the applicable threshold: § 14.77.020–.040; if project skirts thresholds, get a preliminary review.
Zoning Administrator discretionary authority	The ZA can require design review even if a project otherwise appears ministerial (see § 14.77.060)	If the site has “special circumstances,” expect the ZA to call it up — verify with Development Services.
Multimodal / Complete Streets review applicability	Planning Commission projects require Complete Streets input, but housing developments are exempt; misunderstandings can delay hearings	Confirm applicability in § 14.77.080 before preparing transportation materials.
Conflicts between objective design standards and design findings	Findings require consistency with general plan and objective standards, but some language is qualitative (materials, “human scale”)	Expect subjective review items; use adopted objective design standards where possible and request clarification during preliminary review. See § 14.77.070.
Notice radius and appeal windows	Public notice mistakes or missed appeal deadlines can void hearings/decisions	Follow § 14.01.130 public notice and appeal timing per § 14.01.100 and § 14.77.120.

Plain‑English summary

If your project changes how a building looks or adds new building area in Los Altos, the city’s design review chapter tells you whether staff, the Zoning Administrator, or the Planning Commission will review it, what you must submit (site plan, elevations, landscape, parking), and the objective findings the city will use to approve or deny it. Small jobs and many ADUs are exempt, but any commercial project and most multi‑unit projects go to the commission; check the thresholds in § 14.77.020–.040 and use a preliminary review if you’re unsure.

Source References

Los Altos Municipal Code — Design Review chapter: § 14.77.010–14.77.120 (Design review purpose, triggers, findings, multimodal review, notices, appeals)
Design review findings: § 14.77.070 (articulation, materials, screening, parking/circulation, CEQA)
Administrative / Zoning Administrator / Planning Commission triggers: § 14.77.020, § 14.77.030, § 14.77.040 respectively.
Exemptions from design review: § 14.77.050 (ADUs, minor repairs, PCF small work)
Multimodal transportation review: § 14.77.080 (Complete Streets Commission procedures; housing exception)
Site plan and parking submission rules: § 14.74.030 and related parking chapter 14.74. See also bicycle parking table in Chapter 14.74.
Public notice and appeals: § 14.01.130 (notice requirements) and § 14.01.100 (appeals); design review notice cross‑refs in § 14.77.090 and appeals § 14.77.120.
Downtown (CD) district purposes and downtown design emphasis: § 14.44.020.
Residential objective standards and Dual Opportunity Development rules (example R‑1 guidance): § 14.64.100 et seq.; façade, roofing and landscaping standards examples in § 14.64.
PUD / Planned Unit Development standards and adjacency rules: § 14.62.060–.090.
Historic alteration and historic resource review references and procedures: Chapter 14.93 and the Historic Alteration Permit guidance.

Also see related GoCodebook pages for context (linked in the body): Los Altos Zoning, Los Altos Development Standards, Los Altos Parking, Los Altos Historic Preservation, Los Altos ADUs, and California Building Standards Code.

Sources

Retrieved passages

Los Altos Zoning Code (§ 1) High relevance
Los Altos Zoning Code (§ 1) High relevance
Los Altos Zoning Code (§ 1) High relevance
Los Altos Zoning Code (§ 1) High relevance
Los Altos Zoning Code (§ 1) Medium relevance
Los Altos Zoning Code (Chapter 11.14) Medium relevance
Los Altos Zoning Code (§ 1) Medium relevance
Los Altos Zoning Code (Section 14.80.060.) Medium relevance
Los Altos Zoning Code (§ 1) Medium relevance
Los Altos Zoning Code (§ 1) Medium relevance

Cited sections

Official Los Altos code library

Frequently asked questions

Do I need design review for an accessory dwelling unit (ADU) in Los Altos?

Most ADUs (attached/detached and junior ADUs) are explicitly exempt from design review under § 14.77.050.B, but ADUs on historic properties have special ministerial review requirements and must also meet historic‑property standards in the historic chapter; verify with staff if the lot is in a historic district or listed on the Historic Resources Inventory.

What triggers Zoning Administrator versus Planning Commission review?

If the project is a new commercial or nonresidential building or a multifamily development with six or more units it goes to the Planning Commission (§ 14.77.040). New two‑story single‑family houses, conversions to two‑story, multifamily with five or fewer units, or exterior additions over 500 sf typically go to the Zoning Administrator after a noticed meeting (§ 14.77.030).

Are small fences or walls subject to design review?

Solid fences and walls taller than 6 feet are listed as triggers for administrative design review in § 14.77.020; ordinary shorter fences are generally not listed as mandatory triggers. Confirm fence design and location with zoning staff.

What findings will the approving body make when considering a design review application?

Approving authorities must find consistency with general plan objectives and adopted objective design guidelines, appropriate site grading and erosion control, human‑scale building articulation and materials, adequate landscaping, screened mechanicals, properly designed parking and circulation, and CEQA compliance among other findings in § 14.77.070.

Does a commercial façade change always require Planning Commission review?

Not always. Minor exterior alterations under specified size thresholds may be processed administratively or by the Zoning Administrator; however, any new commercial or nonresidential development requires Planning Commission design review per § 14.77.040. Check the area and scope against § 14.77.020–.040.

How does parking and site plan review interact with design review?

A site plan is required for all required parking facilities and must be submitted with any discretionary or ministerial permit (§ 14.74.030). If no other permit is required, modification of parking facilities is reviewed as an administrative design review to ensure consistency with the design chapter (§ 14.74.030.C and § 14.77.020). See the city's parking rules on the Los Altos Parking page.

How much public notice and how many hearings will my design review get?

Notice for discretionary design review follows § 14.01.130 (mailing to owners within 300 ft, site posting, and publication when required); when hearings are required the code limits design‑only public hearings to no more than three hearings (§ 14.77.100). Appeals follow Chapter 14.01.100 timing rules.

Can the Zoning Administrator require design review even if my project seems ministerial?

Yes. § 14.77.060 gives the Zoning Administrator authority to require administrative design review when special circumstances or potential negative community impacts are present; this is discretionary. Verify applicability with Development Services.

If my project needs multimodal review, who reviews that?

An application subject to Planning Commission design review will also have a multimodal transportation review and the Complete Streets Commission will give recommendations to the Planning Commission; housing developments are exempt from Complete Streets review (§ 14.77.080).

Where do I submit preliminary materials to reduce uncertainty before formal filing?

Preliminary (pre‑submittal) reviews are available at staff level or with the Planning Commission to identify key issues. The preliminary review submittal requirements and process are described in § 14.01.090. Use this step when the project has sensitive compatibility or policy questions.

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