California decouples from federal bonus depreciation. For Big Bear buyers, the headline federal savings figure overstates total tax savings — here's the Schedule CA (540) walkthrough with engine-derived numbers.
Before the analysis: the underlying numbers this post draws on come from 5 Big Bear-area properties run through the Cost Seg Smart engine — same engine that produces real customer studies. Median Year-1 federal savings is $37,768 at the 37% top marginal bracket with 100% bonus depreciation. Reclassification ratio ranges 16.0% to 26.4%.
Big Bear sits in an unusual structural position relative to other Southern California STR markets: it's the closest ski-resort cabin economy to the Los Angeles basin (a 2.5-hour drive vs 5+ hours to Mammoth Lakes), the entry price point is meaningfully lower than coastal alternatives, and the year-round demand profile is unusual — ski traffic November–April and lake-and-hiking traffic June–September, with shoulder-season ADR softness March–May and October.California's §168(k) decoupling is the structural cost-seg disadvantage here — and unlike Tahoe (where buyers can elect the Nevada side to escape the decoupling), Big Bear is entirely in San Bernardino County, California. There's no...
The remainder of this section drills into the specifics that matter for regulatory specific. The five fixtures we ran through the engine for Big Bear span $365,000 to $875,000 in purchase price across 5 distinct sub-markets — enough variance to draw real conclusions about which scenarios actually produce cost-seg ROI in this market.
Take the Big Bear Lake Lakefront SFR as our anchor example. Purchase price: $875,000. Built 1998, 2200 sqft, SFR operating as a short-term rental, located in Big Bear Lake (city, lakefront).
The engine determined land allocation of 34.7% using statistical methodology, producing a depreciable basis of $571,638. Of that, the engine reclassified $110,304 into 5-year personal property (FF&E, decorative finishes, certain electrical), $35,725 into 15-year land improvements (paving, landscaping, hardscape, site lighting), and the rest into the 27.5-Year Residential Real Property structural category.
That produces a total reclassification ratio of 26.1%. At 100% bonus depreciation and a 37% federal marginal bracket, the illustrative Year-1 federal tax savings is $55,228. That's the headline number for this fixture.
Contrast that with Moonridge Ski Cabin: $685,000 in Moonridge (Bear Mountain Resort base), built 2008. Here the engine produced a reclassification ratio of 26.4% — higher than the previous example.
Why? Two reasons. First, the land allocation profile is different — 37.1% here versus 34.7% for the previous example. Second, the engine's treatment of sfr as a furnished short-term rental interacts with the build-year and FF&E density differently across neighborhoods.
The takeaway: in Big Bear, the per-fixture variance is real. A median number (26.1% reclass) hides meaningful variation across sub-markets and property archetypes.
California decouples from federal §168(k) bonus depreciation. The federal 100% bonus restored by OBBBA in 2025 reduces your federal liability, but California requires the deduction to be added back on Schedule CA (540), with the basis depreciating on the regular MACRS schedule for state purposes. For a Big Bear owner in California's top 13.3% bracket, that means roughly 13 cents of every dollar of accelerated reclassification is recovered on the state return — the headline federal-savings number overstates total tax savings by a meaningful margin.
Decoupling: California's decoupling is permanent and structural, not a temporary policy choice — it predates the federal §168(k) provision. For Big Bear cost-seg planning, model the federal benefit as your primary win and treat any California state savings as recovered slowly over the regular MACRS schedule.
This affects every cost-seg calculation in Big Bear. Because California doesn't fully conform, the federal Year-1 figure shown above is only the federal-only portion. The state benefit is smaller (or different) and your CPA will need to manage the addback at filing time.
City of Big Bear Lake operates an active STR permit system with annual renewal requirements, neighborhood density caps, occupancy limits, and noise/parking compliance triggers that can revoke permits for repeat violations. Permits are tied to properties and have transfer-on-sale procedures. Unincorporated San Bernardino County (Big Bear City, Sugarloaf, parts of Fawnskin) operates a county-level STR registration with lighter restrictions. STR-intent buyers should verify jurisdictional boundaries and permit status before closing — addresses on the same road can fall under different regulatory regimes depending on incorporation lines. Material participation under §469 is achievable for self-managing operators, but Big Bear has a well-developed full-service property-management ecosystem (Big Bear Cool Cabins, Destination Big Bear, RedAwning local affiliates) and most owners use professional management, which makes the >100-hour-and-more-than-anyone test difficult to clear.
To run this analysis for your specific Big Bear property: the same engine, with your address, year built, square footage, and renovation history. Studies start at $495 for residential under $300K. Audit defense is included with every Cost Seg Smart study.
To run this analysis for your specific Big Bear property: the same engine, with your address, year built, square footage, and renovation history. Studies start at $495 for residential under $300K. Audit defense is included with every Cost Seg Smart study.