Mammoth Lakes — Design Review

Last reviewed: July 2, 2026

Overview

Mammoth Lakes requires local design review to shape site design, materials, colors, lighting, landscaping, and other exterior features so projects fit the town’s mountain‑resort character. The rules sit in Title 17 (Zoning) under Chapter 17.88 and apply differently by project type: some small residential work is exempt, some projects are handled by the Director as minor design review, and bigger or commercial projects go to the Planning and Economic Development Commission for major design review § 17.88.010 and § 17.88.020 . The code makes the applicant responsible for providing the materials needed to make the findings in § 17.88.060 .

Note: throughout this page the town’s term “design review” is used in the ordinance sense (see the Town Zoning rules) and is distinct from building permit compliance under the California Building Standards Code.

What the code requires (core rules and process)

• Design review purpose and test: the review implements the General Plan, Town design guidelines, and aims to maintain the mountain‑resort character, protect vegetation and topography, and manage exterior materials/colors/lighting § 17.88.010 .
• Applicability / exemptions: design review is required for new construction and most exterior improvements, but the ordinance lists explicit exemptions (for example: many one‑ and two‑unit residential structures and accessory dwelling units are exempt except in certain high‑elevation or rural cases) § 17.88.020(1) .
• Minor vs. Major review: the Director handles minor design review (new 3–4 unit residences, some single‑family units in certain locations, and other smaller projects), while the Commission handles major design review (most commercial projects, new residential five units or more, and projects that require Commission approval) § 17.88.020(2)–(3) .
• Application and submittal: applications must use the Department form and include all required materials; the applicant must provide evidence supporting the findings in § 17.88.060. Concept (pre‑application) reviews are encouraged § 17.88.030 and § 17.60.040 .
• Scope and evaluation: review covers building massing, orientation, site design, parking/circulation, colors/materials, landscaping (including water efficiency), lighting, mechanical screening, and signs (signs also have Chapter 17.48) § 17.88.040 .
• Findings, conditions, and appeals: the reviewing body must apply the design criteria and may impose conditions reasonably related to the project but may not reduce allowed residential density or FAR; design review decisions are appealable under Chapter 17.100 § 17.88.060 .
• Fees and completeness: the Town’s fee schedule and application completeness rules apply; no processing until fees are paid and application is deemed complete § 17.60.050 .

(For full procedural text see § 17.88.010–§ 17.88.060.)

District-by-district breakdown — where design review matters on a parcel-by-parcel basis

The Town’s district chapters identify zone purpose, permitted uses or permit triggers, and many districts explicitly call out that projects are subject to design review under Chapter 17.88. Below are the districts most relevant to design review in Mammoth Lakes (each district name and numeric standard below is bolded as it appears in the code).

Table: quick reference to decision‑relevant district standards and code citations

Notes on the table and where to look in the code:

• Many commercial/active‑frontage uses and their permit status are listed in Table 17.24.020; the commercial chapter explicitly links projects to design review § 17.24.020 .
• The Town’s general site standards that design reviewers rely on (setbacks, snow storage, height measurement, tree protection, screening of mechanical equipment, landscaping) sit in Chapter 17.36 (for example § 17.36.050, § 17.36.060, § 17.36.100) and are applied across zones; reviewers apply those plus zone‑specific standards when making findings § 17.36.010 .

How design review decisions are made (practical synthesis)

• Who decides: the Director (or designee) decides minor design review; the Planning and Economic Development Commission decides major design review — the Director can refer minor matters to the Commission if appropriate § 17.88.030(c) .
• What reviewers look for: they apply the design criteria and Town design guidelines plus the project’s compliance with the General Plan, any specific/master plan, and Town design guidelines § 17.88.050 .
• Conditions and limits: conditions must be reasonably related to the project; the review authority cannot impose conditions that reduce residential density or FAR otherwise allowed by the code § 17.88.060(b) .
• Interactions with other chapters: design review runs alongside other approvals — e.g., use permits, master plans, subdivision approvals — and findings must account for any other applicable planning approvals § 17.88.060(a)(5) .

Practical guidance: request a concept review with staff (concept reviews are encouraged and give early feedback; see § 17.60.040) before final design submittal, assemble your design package to show how your project meets the specific design criteria in § 17.88.050, and budget for Director/Commission hearings and fees per § 17.60.050 .

Checklist

• Confirm whether your work is exempt, minor, or major under § 17.88.020 and whether the Director or Commission will review it § 17.88.020(1)–(3) .
• Complete the Town’s design review application form and provide all materials identified by the Department (plans, elevations, material/color boards, landscape plan, lighting, mechanical location/screening) § 17.88.030(a) .
• Provide supporting evidence addressing the design review criteria in § 17.88.050 (compatibility, site planning, materials/colors, landscaping, lighting, screening, snow storage, circulation). § 17.88.050 .
• Pay required fees and deposits; confirm application completeness before processing begins § 17.60.050 .
• If applicable, identify any overlay constraints (e.g., Snow Deposition Design Overlay, Open Space/Stream Corridor Overlay) and any master plan or specific plan that overrides zone standards § 17.32.010; § 17.112.040 .
• For commercial projects, include signage studies and ensure sign proposals reference Chapter 17.48 (signs are subject to separate design review requirements) § 17.88.040(9) .
• Prepare to document tree/vegetation impacts and replacement plantings when applicable § 17.36.050(b) .

Risks & Ambiguities

Plain‑English summary

If you are changing the outside of a building or site in Mammoth Lakes you will usually need to go through the town’s design review process (unless your project is explicitly exempt). Small residential projects may be handled administratively by planning staff; bigger projects and most commercial work go to the Planning Commission. The reviewer checks site layout, building shape, materials and colors, landscaping, lighting, parking, and snow and mechanical equipment screening against the Town design guidelines and Title 17 standards § 17.88.020–§ 17.88.060 .

Source References

• Mammoth Lakes Zoning — Title 17 (Zoning Code), Chapter 17.88 (Design Review): § 17.88.010–§ 17.88.060 (purpose, applicability, minor/major thresholds, application, scope, criteria, conditions, appeals) .
• Application/processing and fees: Chapter 17.60, concept review and application completeness and fees § 17.60.040; § 17.60.050 .
• Commercial districts / Downtown / Old Mammoth Road / MLR district descriptions and FAR: § 17.24.010 and Table 17.24.020 (uses) — design review linkage for commercial projects § 17.24.020 .
• Resort zone rules and master plan requirement: § 17.32.110 (Resort zone; master plan requirement; site coverage; densities; design theme to conform to 17.88) .
• Airport zone and design review: § 17.32.060 (Airport — FAA/Town standards; design review required) .
• Industrial development standards (example table): Table 17.28.030 and § 17.28.030 (setbacks, height, lot coverage references to design review) .
• Townwide development standards used by design review (setbacks, height measurement, tree preservation, snow storage, etc.): Chapter 17.36 (e.g., § 17.36.050, § 17.36.060, § 17.36.100) .
• Master plans and their precedence over zone standards: § 17.112.040 (specific plan effect) .
• Signage and sign‑related design review triggers: Chapter 17.48 (see sign tables and notes) .

If you want, I can extract the exact text for any one of the cited sections (for example, the full § 17.88.020 exemptions and thresholds) or prepare a pre‑submittal checklist template tailored to a specific parcel — provide the property's zoning and elevation and I’ll map the likely review path. Verify parcel‑specific issues (overlays, elevation, master plan coverage) with Town staff before final design decisions.

Retrieved passages

• Mammoth Lakes Zoning Code (§ 17.84.050) High relevance show source text
• Mammoth Lakes Zoning Code (§ 17.88.020) High relevance show source text
• Mammoth Lakes Zoning Code (Chapter 17.60.) High relevance show source text
• Mammoth Lakes Zoning Code (§ 17.36.090) Medium relevance show source text
• Mammoth Lakes Zoning Code (Section 17.88.050) Medium relevance show source text
• Mammoth Lakes Zoning Code (Section 17.132.120.) Medium relevance show source text
• Mammoth Lakes Zoning Code (§ 17.112.060) Medium relevance show source text
• Mammoth Lakes Zoning Code Medium relevance show source text
• Mammoth Lakes Zoning Code (Chapter 17.88.) Medium relevance show source text
• Mammoth Lakes Zoning Code (Chapter 17.116.) Medium relevance show source text
• Mammoth Lakes Zoning Code (Chapter 17.138) Medium relevance show source text
• Mammoth Lakes Zoning Code (§ 17.52.120) Medium relevance show source text
• Mammoth Lakes Zoning Code (chapter or) Medium relevance show source text
• Mammoth Lakes Zoning Code (Chapter 17.116.) Medium relevance show source text

Cited sections

• Mammoth Lakes Zoning — Title 17 (Zoning Code), Chapter **17.88** (Design Review): **§ 17.88.010**–**§ 17.88.060** (purpose, applicability, minor/major thresholds, application, scope, criteria, conditions, appeals) . (Title 17)
• Application/processing and fees: Chapter **17.60**, concept review and application completeness and fees **§ 17.60.040; § 17.60.050** . (§ 17.60.040)
• Commercial districts / Downtown / Old Mammoth Road / MLR district descriptions and FAR: **§ 17.24.010** and Table 17.24.020 (uses) — design review linkage for commercial projects **§ 17.24.020** . (§ 17.24.010)
• Resort zone rules and master plan requirement: **§ 17.32.110** (Resort zone; master plan requirement; site coverage; densities; design theme to conform to 17.88) . (§ 17.32.110)
• Airport zone and design review: **§ 17.32.060** (Airport — FAA/Town standards; design review required) . (§ 17.32.060)
• Industrial development standards (example table): Table 17.28.030 and **§ 17.28.030** (setbacks, height, lot coverage references to design review) . (§ 17.28.030)
• Townwide development standards used by design review (setbacks, height measurement, tree preservation, snow storage, etc.): **Chapter 17.36** (e.g., **§ 17.36.050**, **§ 17.36.060**, **§ 17.36.100**) . (Chapter 17.36)
• Master plans and their precedence over zone standards: **§ 17.112.040** (specific plan effect) . (§ 17.112.040)
• Signage and sign‑related design review triggers: Chapter **17.48** (see sign tables and notes) .
• MammothLakes_ZoningCode.md

• Official Mammoth Lakes code library