Scottsdale cost segregation,
by the actual numbers.

Yes. Arizona statutorily conforms to IRC §168(k) bonus depreciation, including the 100% bonus restored under OBBBA (signed July 2025) for 2025 and beyond. Your federal AND your Arizona state return both take 100% bonus in Year 1. Combined with AZ’s flat 2.5% state income tax rate (the lowest among states that have an income tax), the federal benefit is the bigger lever — but the state side is a real, additive benefit, not a workpaper headache like California or New York.

No. The IRS doesn’t care about Scottsdale’s local STR license tier. Your $250 annual license, emergency contact, neighbor notification, and TPT registration are operational requirements — they don’t change federal tax treatment. As long as the property is licensed and income-producing, it qualifies for the standard cost-seg treatment. The only license-related restriction at the federal level is that you can’t deduct on a property you can’t legally rent, so make sure your license is active in the tax year you claim the deduction.

All accelerated. Pool equipment (pumps, filters, heaters) is 5-year personal property. Pool deck and surround are 15-year site improvements. Outdoor kitchens get split: appliances are 5-year personal, the structure they sit in is 15-year. Putting greens, fire pits, ramadas, fountains, decorative landscaping — all 15-year site improvements. This is why Scottsdale STRs hit 35–40% accel of basis vs. 25–30% for plain-vanilla STRs in markets without pool/outdoor culture. Engine-grade studies value each component separately rather than lumping them under 27.5/39-year structure.

Yes. New AZ purchase = new basis = cost-seg-eligible. If you 1031’d from a CA property, the carry-over basis becomes the new basis and that’s still eligible. Major upside: AZ conforms to federal bonus depreciation while CA decouples, so you go from a parallel state-side workpaper headache to a clean conformance state. If you also became an AZ resident, your overall marginal rate drops dramatically (CA 9–13% → AZ 2.5%), which makes the W-2 active-loss math even better.

Operationally, it matters for STR licensing — Paradise Valley regulates STRs separately from Scottsdale. For cost seg, no. Both are in Maricopa County for assessor purposes, and the federal tax treatment is identical. Paradise Valley typically runs higher land allocation (45–55%) due to ultra-premium land values on large lots, which means a smaller depreciable basis but very high $/SF construction quality on the structure side. Engine output is actually lower as a percent of purchase price than a North Scottsdale property at the same price.

Indirectly, yes — the seasonal premium drives owners to invest in premium FF&E, themed rooms, pool upgrades, and outdoor amenities to compete for those event-week bookings. All of that FF&E and outdoor work classifies into 5- and 15-year buckets, which is the entire point of cost seg. So the seasonal pricing pattern doesn’t directly affect the study, but it shapes the property in a way that produces above-average accelerated allocations.

Scottsdale and Phoenix are essentially identical from a tax standpoint (same county, same state, same conformance). Scottsdale just has higher purchase prices, so absolute Year-1 deductions are larger. Compared to Austin: similar state-side conformance story (TX has no state tax; AZ has 2.5% with conformance), but Scottsdale STRs hit higher accel ratios because of the pool/outdoor density. Compared to Las Vegas: NV is also no-state-tax, but NV property tax is higher and STR licensing is much stricter. Scottsdale is in the top quartile of cost-seg-friendly markets.