Short-Term Rental Investing in Mammoth Lakes, CA: Sierra Nevada STR Market Guide

Mammoth Lakes, California sits at 7,880 feet in the Eastern Sierra Nevada, 5 hours from Los Angeles and 6 hours from San Francisco. It is California's largest and most visited ski resort — Mammoth Mountain averages over 400 inches of snow annually and regularly operates into June, sometimes July, giving it one of the longest ski seasons in North America. For Southern California's 20+ million residents who cannot reach Lake Tahoe in 3 hours, Mammoth is the premium ski destination and the centerpiece of one of the West's most reliable STR investment markets.

Mammoth Market Overview: SoCal's Ski Escape

The Mammoth Lakes market is anchored by Mammoth Mountain's extraordinary snow reliability. In years when other California ski areas close by March, Mammoth runs through Memorial Day weekend and beyond. This season extension creates revenue opportunities unavailable in comparable markets. Beyond skiing, the Eastern Sierra offers Yosemite access (Highway 395 connects through Tioga Pass — open summer only), Devils Postpile National Monument, Convict Lake, Hot Creek Geological Site, and world-class trout fishing. Summer brings mountain biking on Mammoth's lift-served bike park and hiking in John Muir Wilderness. Fall (September–October) draws leaf-peepers and Yosemite-adjacent visitors.

Revenue Benchmarks by Property Type

California's Bonus Depreciation Non-Conformity: What It Means for Mammoth Investors

California's non-conformity with federal bonus depreciation is a planning reality for every California STR investor, including those in Mammoth Lakes. Here is how it works in practice: suppose a cost segregation study on your $800,000 Mammoth condo identifies $160,000 in short-life assets. On your federal return, you deduct $160,000 in Year 1 via 100% bonus depreciation, saving $59,200 at the 37% bracket. On your California CA-540, you add back the portion that exceeds California's regular MACRS depreciation for that year. California then lets you deduct the assets over their standard lives — 5-year assets over 5 years, 15-year improvements over 15 years.

The result: your $59,200 federal Year 1 savings is fully intact and immediate. California taxes will be higher in Year 1 (the addback at 13.3% is real), but lower in each subsequent year as you take the California MACRS deductions. A California CPA can model the exact NPV impact. On most analyses, the timing difference is worth accepting for the immediate federal benefit — especially on Mammoth's high-value ski properties.

Cost Segregation Profile: Mammoth Lakes Properties

Mammoth ski properties have a strong personal property and land improvement profile. Key reclassifiable components: outdoor hot tubs and spa systems (15-year), ski storage and boot dryer rooms (personal property elements), heated entry systems and exterior steps (15-year), outdoor decks and balconies with mountain views (15-year), furnished ski condo interior packages including premium furniture and entertainment systems (5-year), specialty lighting in common areas of owned units (15-year or personal property depending on analysis), and exterior walkway lighting and landscaping (15-year).

Mammoth properties typically achieve 18–25% in short-life reclassifiable assets. On a $1M Mammoth ski home, that's $180,000–$250,000 in bonus-eligible deductions, producing $66,600–$92,500 in Year 1 federal savings at 37%. For investors in California's top bracket, the federal savings alone justify cost segregation on most properties over $600,000.

Mammoth Lakes STR Regulations

The Town of Mammoth Lakes administers a Vacation Home Rental (VHR) permit system for all STR operators. Permits are required for all properties renting for less than 30 consecutive days, are property-specific, and are subject to occupancy caps, noise rules, parking requirements, and compliance inspections. The Town has implemented permit caps and has periodically paused new VHR permit issuance. Permit status — whether the permit is active, in good standing, and transferable upon sale — is one of the most critical due diligence items for any Mammoth acquisition. Unpermitted properties operating as STRs face significant fines.