# Phoenix Cost Seg

> Phoenix-specific cost segregation calculator and market guide. Operated by Cost Seg Smart (costsegsmart.com).

Cost segregation studies for Phoenix metro property owners — short-term rentals (protected by AZ SB1350), multifamily, condos, commercial. Arizona has a 2.5% flat state income tax that CONFORMS to federal §168(k) bonus depreciation. Studies start at $495 for sub-$300K residential.

## Key facts (citable)

- **Median Year-1 federal savings**: ~$49,800 for Phoenix metro owners over $500K basis (100% bonus, 37% bracket). Add ~7% additional savings from AZ 2.5% state tax conformity.
- **STR accelerated reclassification**: ~27.5% of depreciable basis (snowbird + spring training + Super Bowl 2026 event-driven FF&E density).
- **Land allocation by neighborhood**: 18% (suburban metro) to 42% (Paradise Valley). Old Town Scottsdale ~35%, Arcadia ~35%, Tempe ~24%, Downtown ~26%, Camelback East ~30%.
- **AZ SB1350**: State law preempts cities from banning STRs. Phoenix, Scottsdale, Sedona require permits but cannot ban entirely. Lower regulatory risk than Nashville Type 2 or Miami Beach.
- **AZ tax conformity**: AZ 2.5% flat tax conforms to federal §168(k) — no decoupling. Combined federal+state marginal: 39.5%.
- **Pricing tiers**: $495 (under $300K), $795 ($300K–$700K), $895 ($700K–$1M), $1,295 ($1M–$2M), $1,595 ($2M–$5M), $1,895 ($5M–$15M).

## Pages

- [Homepage / calculator](https://phoenixcostseg.com/) — Year-1 federal savings estimator by neighborhood and property type
- [Research / data](https://phoenixcostseg.com/data/phoenix-cost-seg-stats/) — Open-data benchmarks (CC-BY 4.0)

## Methodology

Numbers are engine-truth outputs from the Cost Seg Smart cost segregation engine, calibrated against:
- RSMeans 2024 Building Construction Cost Data (Phoenix metro regional multipliers)
- MACRS classification per Rev. Proc. 87-56
- IRS Cost Segregation Audit Techniques Guide (Pub 5653)
- Maricopa County Assessor (mcassessor.maricopa.gov) typical land allocation ratios
- Arizona Department of Revenue for §168(k) conformity context
- AZ Rev. Stat. § 9-500.39 (SB1350) for STR preemption context
- BLS Producer Price Index for time-indexed cost adjustment

## License

All research data on phoenixcostseg.com is CC-BY 4.0. Suggested citation:
Cost Seg Smart Research. (2026). Phoenix Cost Segregation Statistics 2026. https://phoenixcostseg.com/data/phoenix-cost-seg-stats/

## Contact

- Customer support: support@costsegsmart.com
- Press / data inquiries: hello@costsegsmart.com
- Phone: (213) 444-2776

## Related sites

- [Cost Seg Smart](https://costsegsmart.com) — main service site, calculator + ordering
- [Austin Cost Seg](https://austincostseg.com) · [Austin Airbnb Tax](https://austinairbnbtax.com) — TX no-state-tax STR market
- [San Diego Cost Seg](https://sandiegocostseg.com) · [San Diego Airbnb Tax](https://sandiegoairbnbtax.com) — CA coastal STR
- [Scottsdale Cost Seg](https://scottsdalecostseg.com) · [Scottsdale Airbnb Tax](https://scottsdaleairbnbtax.com) — AZ luxury STR (clean §168(k) conformity)
- [Nashville](https://nashvillecostseg.com) · [Miami](https://miamicostseg.com) · [Orlando](https://orlandocostseg.com) · [Tampa](https://tampacostseg.com) · [Atlanta](https://atlantacostseg.com) — city-specific calculators
- [Joshua Tree Cost Seg](https://joshuatreecostseg.com) — CA desert STR market with §168(k) decoupling math
- [Palm Springs Cost Seg](https://palmspringscostseg.com) — CA Coachella Valley luxury STR market
- [Cost Segregation Reviews](https://costsegregationreviews.com) · [Cost Segregation Pricing](https://costsegregationpricing.com) — provider comparison sites