San Diego’s year-round coastal tourism, high property values, and California’s top income tax rate make cost segregation essential for maximizing after-tax STR returns.
Estimates are for illustration only. Details
San Diego’s STR market draws from a consistent base: beach vacationers, Comic-Con and convention attendees, military relocations, and a growing remote-worker population drawn by the climate. Pacific Beach, Mission Beach, and Ocean Beach command the highest nightly rates for walk-to-the-sand properties, while La Jolla and Del Mar attract a luxury clientele willing to pay $400–$600/night. Investors typically pay $700K–$1.5M and gross $70K–$150K annually.
The combination of high purchase prices and California’s 13.3% top income tax rate makes San Diego one of the highest-ROI markets for cost segregation in the country. The accelerated depreciation reduces both federal and state taxable income, and for investors in the top brackets the combined marginal rate exceeds 50%. Physically, San Diego STRs carry strong reclassification potential: coastal-grade finishes, outdoor decks, updated kitchens, and designer furnishing packages all sit in accelerated MACRS classes.
Take a $900K beach cottage in Pacific Beach — a renovated 3-bedroom with an updated kitchen, outdoor deck, fenced yard, and professional coastal-themed interior. The depreciable basis after land is roughly $650K. A cost segregation study reclassifies approximately $195K into shorter MACRS classes: about $137K in 5-year property (cabinetry, countertops, appliances, flooring, bathroom fixtures, furniture, decor, lighting, electronics) and $58K in 15-year property (deck build, fencing, landscaping, driveway, walkways, exterior lighting, outdoor shower).
San Diego STR investors include military families who rent their homes short-term during deployment, California professionals who purchased before permit restrictions tightened, and high-income buyers from LA and the Bay Area who treat their San Diego property as both a weekend retreat and income producer. For someone in the combined 50%+ federal-plus-state bracket, a $900K property can generate $90K–$100K in real year-one tax savings.
California’s state income tax tops out at 13.3%, the highest in the nation. San Diego investors capture a meaningful state-level benefit on top of federal savings. Your CPA should verify current-year conformity with bonus depreciation provisions. The combined year-one savings on a $900K property often exceeds $90K. Note that California does impose depreciation recapture at sale, so 1031 exchange planning is especially valuable here.
Illustrative estimate. Final allocations vary based on property facts and report findings.
Component-by-component breakdown, MACRS schedules, and Form 3115 filing instructions. This is the actual deliverable — see exactly what your CPA receives.
View San Diego Sample Report →No. Cost segregation is explicitly supported by IRS guidelines (Rev. Proc. 87-56) and the IRS Audit Techniques Guide for Cost Segregation. Tens of thousands of studies are filed every year. Our reports are designed to withstand scrutiny — that's why they run 40+ pages with component-level documentation.
Cost segregation is standard practice, not a loophole. The IRS has published formal guidance on how to do it correctly. Every Big 4 accounting firm offers it. We follow the same engineering-based methodology — just faster and at a fraction of the cost.
You'll owe depreciation recapture at 25% on the accelerated portion when you sell. But if you 1031 exchange into another property, recapture is deferred indefinitely. For most investors, the upfront tax savings far outweigh the eventual recapture — especially when you factor in the time value of money.
Most CPAs know about cost segregation but don't proactively recommend it because they don't do the engineering analysis in-house. That's what we provide. Your CPA files the results — we email them a CPA-ready package with everything they need, and we answer any questions they have directly.
Short-term rentals contain a higher concentration of depreciable personal property than almost any other residential property type. Furniture, appliances, linens, kitchenware, electronics, decorative fixtures, and specialty items like hot tubs or game room equipment all qualify as 5-year property under the IRS MACRS classification system. This furniture, fixtures, and equipment (FF&E) component typically represents 15-20% of the depreciable basis.
Beyond interior components, site improvements add additional reclassification value. Driveways, walkways, patios, outdoor lighting, fencing, landscaping, and irrigation systems fall into the 15-year MACRS class rather than the default 27.5-year residential schedule. For STR properties with pools, outdoor kitchens, or fire pits, these components can represent a meaningful share of the total reclassified amount.
With 100% bonus depreciation permanently restored under the One Big Beautiful Bill Act (signed July 2025), every dollar reclassified into 5-year, 7-year, or 15-year MACRS classes is deductible in full in the first year. For STR owners who materially participate in their rental operation, these accelerated deductions can offset W-2 and business income — not just passive rental income.
If your property is a passive investment managed entirely by a third party, the accelerated depreciation may only offset passive income. If your property has minimal furnishings or you plan to sell within 1-2 years, the benefit may be reduced. Actual results vary based on property age, condition, renovations, and local construction costs.
This Airbnb investor ordered a cost segregation study and used the accelerated depreciation on their next tax return. Here's what happened.
| Price | Accelerated | Tax Savings | Study Cost | ROI |
|---|---|---|---|---|
| $300K | $72,000 | $26,640 | $795 | 34x |
| $500K | $120,000 | $44,400 | $795 | 56x |
| $750K | $180,000 | $66,600 | $795 | 84x |
| $1M | $240,000 | $88,800 | $1,195 | 74x |
| $400K | $96,000 | $35,520 | $795 | 45x |
| $600K | $144,000 | $53,280 | $795 | 67x |
| $1.5M | $360,000 | $133,200 | $1,195 | 111x |
| $450K | $108,000 | $39,960 | $795 | 50x |
| $700K | $168,000 | $62,160 | $795 | 78x |
| $800K | $192,000 | $71,040 | $795 | 89x |
A cost segregation study is an engineering-based analysis that reclassifies components of your property into shorter IRS depreciation categories (5, 7, and 15 years) instead of the default 27.5 or 39 years. This accelerates your depreciation deductions, reducing your tax bill in the early years of ownership.
Short-term rentals are typically furnished with furniture, appliances, electronics, linens, kitchenware, and décor — all of which qualify as 5-year personal property under MACRS. This FF&E (furniture, fixtures, and equipment) often represents 15-20% of the property's depreciable basis, significantly increasing the accelerated depreciation amount compared to unfurnished long-term rentals.
When you sell a property, the IRS recaptures accelerated depreciation at a maximum rate of 25%. However, the time value of money strongly favors taking the deduction now: $50K in tax savings today is worth far more than paying $12,500 in recapture tax years later. Additionally, a 1031 exchange can defer recapture indefinitely.
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