Local zoning · Mammoth Lakes

Mammoth Lakes — Variances and Exceptions

Q: What’s the difference between a Variance and an Adjustment (minor exception)?

An Adjustment is a Director‑level, one‑time minor numeric deviation listed in Table 17.76.020 (e.g., setbacks ≤ 20% , height ≤ 10% , lot coverage +5%). Requests that exceed those caps must go to the variance process (Commission). See § 17.76.010–020 and Table 17.76.020 .

Variances and Exceptions under the Mammoth Lakes 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 Mammoth Lakes handles variances, adjustments (minor exceptions), reasonable accommodations, and statutory exceptions for nonconforming situations under the local zoning ordinance (Title 17). Variances are discretionary departures from development standards that require Planning Commission action; smaller departures can be handled as Adjustments by the Director. The rules are framed by findings (special circumstances, minimum departure, public interest) and by cross‑checks to other local standards such as parking, setbacks and development standards, and design review. See the Town rules for parking, setbacks, and design review for matters that frequently interact with variance requests: Mammoth Lakes Parking, Mammoth Lakes Development Standards, and Mammoth Lakes Design Review.

What Title 17 says — the core rules (short list)

Variances are permitted only to relax development standards (not uses, density, or procedural restrictions) and are decided by the Planning and Economic Development Commission after a public hearing. Key authorities: § 17.72.010, § 17.72.020, § 17.72.030 .
The variance findings that must be made are set out in § 17.72.040 (special circumstances, no grant of special privilege, consistent with General Plan, minimum necessary, CEQA compliance). The Commission may impose conditions (§ 17.72.050) and post‑approval procedures apply (§ 17.72.060) .
Minor, one‑time departures are handled as an Adjustment (Director or optionally referred to Commission). The list of eligible standards and maximum adjustments is in Table 17.76.020 (lot size 10%, lot coverage 5%, setbacks 20%, height 10%, etc.). Adjustments require the variance findings plus added findings (public benefit, increased safety, adequate snow storage for setback adjustments) — see § 17.76.010–040 and Table 17.76.020 .
Reasonable accommodation requests (for persons with disabilities) allow departures where required by federal/state fair housing laws — see § 17.80.010–040 .
Nonconforming structure/use exceptions (what may continue, be repaired, or changed) are in § 17.96.010–030, and specific exceptions are called out in § 17.96.020 .
Sign variances and sign adjustments have their own rules tied back to the variance/adjustment chapters; additional sign‑specific findings are required by § 17.48.110 .

District‑by‑district notes (how variances / adjustments are applied in Mammoth Lakes districts)

Below are Mammoth‑Lakes‑specific district entries where the ordinance text (Title 17) provides explicit district purpose or where the code identifies district‑specific modification paths. Not all zone chapters are reproduced here; where the retrieved materials did not include a district's full table of dimensional standards the entry notes the information gap and points you to verify with the Town.

Downtown (D)

Purpose: Provide a mix of residential, nonresidential, and lodging uses with active ground‑level frontages; emphasis on pedestrian environment and shopfront buildings. Maximum FAR is 2.0. See § 17.24.010(1) for the Downtown district purpose and FAR limit .
Typical permitted uses: ground‑floor retail and services, lodging, stacked residential. (The code lists D as consistent with Commercial 2 (C‑2).) See § 17.24.010(1) .
Variances & Adjustments: Because D concentrates development, dimensional variances (setbacks, height) are evaluated against the variance findings in § 17.72.040; small reductions (e.g., projection or height bump ≤10%) may fit Table 17.76.020 if eligible .
Where it applies: Main Street/central downtown planning area (per zoning map and Chap. 17.24 descriptions) — verify parcel‑level zone on the Official Zoning Map. See § 17.24.010 .

Old Mammoth Road (OMR)

Purpose: An arts and culture / medium‑scale commercial district focused on community‑serving retail, artist galleries, offices; maximum FAR 2.0. See § 17.24.010(2) .
Variances & Adjustments: Same review framework — Commission acts on variances; the Director on adjustments per Table 17.76.020. For design‑sensitive requests (signs, frontages) design review criteria will also apply — see Mammoth Lakes Design Review and § 17.88.050 and related design provisions .

Mixed Lodging/Residential (MLR)

Purpose: Allow lodging, residential, and nonresidential uses emphasizing transient occupancy; maximum FAR 2.0. See § 17.24.010(3) .
Variances & Adjustments: Same rules as other commercial districts; transient‑focused projects often require coordination with lodging standards (use permits) and design review.

Planned Residential Development (PRD)

Purpose & application: The ordinance includes a PRD regime that requires specific findings and a development plan, and PRD approvals may involve zoning map or text amendments and use permits; the code says PRD is intended to fit topography, conserve natural features, and meet performance standards (see the PRD chapter text in Title 17) .
Variances & Adjustments: PRD projects are subject to the same variance findings when the PRD plan itself seeks a variance; in addition, PRD approvals typically require specific findings (compatibility, preservation of environmental qualities) that must be satisfied. Verify the exact PRD chapter/section reference with the Town (not found as a single § citation in retrieved excerpts). Verify with the jurisdiction.

Industrial and Screening Buffers

The code requires industrial uses to maintain minimum setbacks and screening from residential zones (e.g., 15‑foot setback and six‑foot masonry or landscaped buffer in screening situations) — see the development standards and screening rules in Title 17 (performance/screening sections) .
Variances for industrial setbacks would be judged under the § 17.72 findings and may be limited where they cause impacts to adjacent residential uses.

Airport Zone

Signs and other features in the Airport zone must follow FAA and Airport Layout Plan requirements; sign variances are processed under the variance/adjustment chapters plus sign‑specific findings § 17.48.110 .

Residential zones (R‑1, R‑2, R‑3, etc.)

The user asked for district‑by‑district specifics. The retrieved materials include general development and setback rules and references to residential limits (height measurement § 17.36.060 and setback rules § 17.36.100) but the explicit per‑zone tables (setback dimensions, lot coverage, density) for R‑1/R‑2/R‑3 were not present in the retrieved excerpts. For variance practice in these residential zones, the Commission must still make the findings in § 17.72.040 and the Director may grant eligible adjustments per Table 17.76.020 for minor numeric departures. Verify exact R‑zone numeric standards (front/side/rear setbacks, max height, lot coverage) in the applicable Chapter 17 zone table or with the Town — Not found in retrieved materials. See general setbacks and height rules § 17.36.100 – § 17.36.060 .

If you need a parcel‑level summary (the R‑zone that applies to my lot and the exact numeric standards), verify with the Town; the Official Zoning Map and the zone chapter tables contain the per‑zone numbers (not fully available in the retrieved excerpts). Verify with the jurisdiction.

Quick reference table — what can be adjusted or varianced (decision‑relevant)

What you want to change	Typical local limit / allowance in Title 17	Code reference
Grant a variance to reduce a setback beyond the Adjustment limit	Commission may grant variance if § 17.72.040 findings are made	§ 17.72.020–040
Minor setback/height/projection relaxations (one‑time)	Allowed as an Adjustment up to table limits (setbacks ≤ 20%, height ≤ 10%, lot coverage +5%)	Table 17.76.020; § 17.76.020–040
Sign height/area increase	Adjustment up to 10% or variance via Chapter 17.72; sign variances need extra finding	§ 17.48.110; Table 17.76.020
Reasonable accommodation for disabled persons	Director may grant deviation meeting reasonable accommodation findings	§ 17.80.010–040
Nonconforming structure changes (repairs, modest alterations)	Allowed under Chapter 17.96 exceptions and continuation rules	§ 17.96.010–030

Checklist — what an applicant must supply to pursue a Variance or Adjustment in Mammoth Lakes

Completed application on the Town form (Chapter 17.60 application form) and all submittal materials as requested by the Director (maps, plans, photos) — see Chapter 17.60; Verify with the Community & Economic Development Department. Not all form items quoted in retrieved materials; verify form.
Evidence showing special circumstances (size, shape, topography, location, surroundings) that make strict application unfair — required for variance under § 17.72.040(1) .
Analysis demonstrating the variance (or adjustment) is the minimum departure necessary and will not grant special privilege; show consistency with the General Plan and any specific plan — § 17.72.040(2), (5), (6) .
CEQA assessment or statement about environmental review (approval must comply with CEQA) — § 17.72.040(7) .
For adjustments affecting setbacks or distance between structures: snow storage / snow‑shedding plan showing adequate areas (Adjustment finding § 17.76.040(4)) .
For reasonable accommodations: documentation of disability and why accommodation is necessary (no fee) — § 17.80.030 .
For sign or parking exceptions: cross‑check sign chapter and Mammoth Lakes Parking standards; certain parking‑in‑setback adjustments reference § 17.36.100(d)(5)a.6 and Table 17.76.020 .
Payment of applicable application fees (as set by the Town; check current fee schedule) and public hearing notice materials for Commission variances — § 17.72.030 (notice/public hearing) .

Risks & Ambiguities

Issue	Why it matters	What to verify
CEQA requirement for variances	The approval must comply with CEQA (may require environmental review) — § 17.72.040(7)	Confirm whether your project triggers CEQA review and which environmental document (ND, MND, EIR) the Town will require.
Snow storage and shedding	Mammoth Lakes has specific snow issues — adjustments to setbacks must show adequate snow storage — § 17.76.040(4)	Provide a snow storage plan; verify whether the Director/Commission considers proposed snow hauling or off‑site storage acceptable.
Nonconforming structures	Rebuilding/repairs may be limited; exceptions exist but can restrict expansions — § 17.96.020	Confirm whether the structure/use is legal nonconforming and which exceptions apply; check whether proposed changes eliminate nonconformity or trigger additional approvals.
Overlay or resource protections (e.g., creek/lake setbacks, bluffs, avalanche zones)	Variances affecting lake/stream corridors and bluffs require additional findings or are more restricted (see stream/lake setback rules and bluff setback references) — e.g., lake/stream setback modification references Chapters 17.72/17.76 plus special findings	Verify overlay district rules (Mammoth Lakes Overlay Districts) and whether additional agency (Corps, Lahontan RWQCB, State) approvals are required.
Historic resources	Historic district/location can prohibit some variances or add preservation findings	Check local historic preservation designations (Mammoth Lakes Historic Preservation) and whether special findings are required. If not in retrieved text: Not found in retrieved materials — verify with Town.
Floodplain/federal maps	Floodplain development needs floodplain admin variance procedures (Building Code/flood rules) — building/flood variances subject to federal limits	Verify FEMA flood maps and whether the project triggers Title 24 / Building Code flood variance procedures; consult the floodplain administrator.

Plain‑English summary

If a dimensional rule (like a setback, lot coverage, or height) would make your Mammoth Lakes project unreasonable because of the lot’s shape, slope, or other special circumstances, you can ask the Planning Commission for a variance — but you must prove the hardship, show the change is the smallest needed, and that it won’t harm neighbors or conflict with the General Plan (§ 17.72.040) . For small numeric tweaks (e.g., up to 20% setback reduction or 10% height bump) use the Director’s Adjustment path under Table 17.76.020 — it’s quicker but limited to the listed items and amounts (§ 17.76.020–040) .

Source References

Town of Mammoth Lakes, Title 17 (Zoning) — Variances (Chapter 17.72): § 17.72.010 – 17.72.060 .
Town of Mammoth Lakes, Title 17 — Adjustments (Chapter 17.76) including Table 17.76.020: § 17.76.010 – 17.76.050 .
Town of Mammoth Lakes, Title 17 — Reasonable Accommodation: § 17.80.010 – 17.80.040 .
Town of Mammoth Lakes, Title 17 — Nonconforming Uses, Structures and Parcels: § 17.96.010 – 17.96.030 and Exceptions § 17.96.020 .
Town of Mammoth Lakes, Title 17 — Commercial zoning district descriptions (Downtown/D/OMR/MLR), § 17.24.010 .
Town of Mammoth Lakes, Title 17 — Sign variances and adjustments § 17.48.110 (sign chapter cross‑references) .
Town of Mammoth Lakes, Title 17 — Setbacks, measurement, and setbacks exceptions (lake/stream setbacks) § 17.36.050 – 17.36.100 .
Town of Mammoth Lakes, Title 17 — Variance revocation/modification (post‑approval procedures) § 17.124.030 .

Note: The above citations reference the ordinance excerpts retrieved from the uploaded Mammoth Lakes zoning code (Title 17). For parcel‑specific numeric zone standards (for example, the R‑zone setback table or floor area ratios for specific parcels), check the Official Zoning Map and the full zone chapter tables in Title 17; those specific tables were not fully included in the retrieved excerpts. Verify with the Community & Economic Development Department.

Sources

Retrieved passages

Mammoth Lakes Zoning Code (chapter necessary) High relevance
Mammoth Lakes Zoning Code (chapter is) High relevance
Mammoth Lakes Zoning Code (Chapter 17.60.) High relevance
Mammoth Lakes Zoning Code (§ 17.68.060) High relevance
Mammoth Lakes Zoning Code (Chapter 17.52.) High relevance
Mammoth Lakes Zoning Code (§ 17.128.020) High relevance
Mammoth Lakes Zoning Code (Chapter 17.48) Medium relevance
Mammoth Lakes Zoning Code (Chapter 17.72) Medium relevance
Mammoth Lakes Zoning Code (Section 17.48.090) Medium relevance
Mammoth Lakes Zoning Code (ARTICLE V.) Medium relevance
Mammoth Lakes Zoning Code (Section 17.72.040) Medium relevance
Mammoth Lakes Zoning Code Medium relevance
Mammoth Lakes Zoning Code (§ 17.96.020) Medium relevance
Mammoth Lakes Zoning Code (Section 17.88.050) Medium relevance
Mammoth Lakes Zoning Code (§ 17.20.030) Medium relevance
Mammoth Lakes Zoning Code (§ 17.36.040) Medium relevance
Mammoth Lakes Zoning Code (Section 17.52.280) Medium relevance

Cited sections

Official Mammoth Lakes code library

Frequently asked questions

How do I apply for a variance in Mammoth Lakes?

File a variance application with the Community & Economic Development Department using the Chapter 17.60 form; after completeness review the Planning Commission holds a public hearing and may approve only if the findings in § 17.72.040 (special circumstances, no special privilege, consistency with the general plan, minimum necessary, CEQA compliance) are made. See § 17.72.030–040 .

What findings must the Planning Commission make to approve a variance?

The Commission must find: (1) special circumstances tied to the property, (2) no grant of special privileges inconsistent with nearby properties, (3) the variance won't authorize a use not allowed in the zone, (4) not detrimental to public health/safety/welfare, (5) consistent with the General Plan, (6) the minimum departure necessary, and (7) CEQA compliance — § 17.72.040 .

What’s the difference between a Variance and an Adjustment (minor exception)?

An Adjustment is a Director‑level, one‑time minor numeric deviation listed in Table 17.76.020 (e.g., setbacks ≤ 20%, height ≤ 10%, lot coverage +5%). Requests that exceed those caps must go to the variance process (Commission). See § 17.76.010–020 and Table 17.76.020 .

Can I get a variance to increase sign size or height?

Yes — sign variances are processed through the variance chapter, but sign adjustments also exist (up to 10%) and sign variances require the additional sign‑specific finding that the sign meets the sign chapter’s purpose and any master sign program — see § 17.48.110 and Chapters 17.72/17.76 .

Can the Director allow parking in a required setback?

The Director may grant an adjustment to allow parking within a setback only when the Adjustment findings in Chapter 17.76 can be made and specific operational conditions are met (protected from snow shed, not impede emergency access, not interfere with snow storage easements), see § 17.36.100(d)(5)a.6 and Table 17.76.020 .

Are there special rules for adjustments/variances that affect snow storage or snow shedding?

Yes — when adjustments affect setbacks or distances between structures a specific finding must be made that adequate snow storage and shedding areas are provided; see § 17.76.040(4) .

What about requests needed for accessibility (reasonable accommodation)?

Reasonable accommodation requests are processed by the Director, are intended to comply with federal/state fair housing laws, and require findings that the accommodation is necessary, does not cause undue burden, and is the minimum departure needed — see § 17.80.010–040 .

Can a variance be revoked later?

Yes — a variance may be revoked or modified by the original review authority if circumstances change or if conditions are violated (variance revocation provisions appear in the permit revocation/modification chapter; see § 17.124.030 for the review authority action criteria including variance revocation) .

If my property is adjacent to a creek or lake, can I get a variance to build in the setback?

Modifying lake/stream/creek setbacks is possible but subject to the general variance/adjustment findings plus additional findings specific to creek/lake corridor standards (for example, project must be outside 100‑yr floodplain and demonstrate riparian resources won’t be significantly diminished) — consult the lake/stream setback rules and variance chapters (see lake/stream development standards and cross‑references to Chapters 17.72 and 17.76) .

Do small numeric ADU exceptions follow the variance rules?

ADU provisions are governed both by State ADU law and local code; Title 17 recognizes ADU rules and state law may limit local discretion. Reasonable accommodations and adjustments may interact with ADUs, but specific ADU dimensional exceptions are controlled by the ADU rules and state law — check Mammoth Lakes ADUs and state ADU law; for local deviations consult § 17.76 for adjustments and the ADU chapter (not fully cited in the retrieved excerpts). Verify parcel specifics with the Town and see Mammoth Lakes ADUs and California ADU law. Not all ADU details were found in the retrieved materials; verify with the jurisdiction.

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