Last updated May 2026. By using this site you agree to these terms.
The cost segregation benchmarks, calculators, and FAQs on this site are informational only. They are not tax, legal, accounting, or investment advice. Cost segregation outcomes vary by property, ownership structure, tax position, and current law. Consult a qualified CPA, tax attorney, or financial advisor before making decisions based on information from this site.
The per-fixture engine outputs shown on the benchmarks page represent the engine's output for representative property scenarios. Real customer studies use real property data, real assessor records, and real renovation history, outputs for your specific property may be higher or lower. The illustrative Year-1 federal savings figures assume the 37% top marginal bracket and 100% bonus depreciation; actual savings depend on your taxpayer profile.
Chicago Shared Housing Ordinance restricts short-term rental operations within City of Chicago limits, STR registration is required, density caps apply in certain residential zones, and whole-unit non-primary-residence STR operation is largely prohibited. Suburban Cook County, DuPage County, Lake County, and Will County operate distinct regulatory regimes, some more permissive than Chicago proper. For STR-intent buyers, jurisdictional verification matters more than the cost-seg study itself. For LTR investors (the dominant cost-seg-relevant Chicago segment), standard §469 passive-loss rules apply, and real-estate-professional status under §469(c)(7) is the typical path for high-volume operators wanting W-2 offset. The federal §168(k) acceleration captures Year-1 cleanly; the Illinois state-side benefit is spread across multiple tax years per IITA modification rules rather than concentrated in Year 1, model both treatments separately in your CPA workflow.
We re-verify regulatory facts quarterly and refresh the timestamps at the bottom of each page. Despite this, regulations change frequently. Before relying on regulatory statements for a specific decision (license status, hold-period planning, material-participation strategy), verify with the relevant authority.
The dataset published on /data/chicago-cost-seg-stats/, including the downloadable CSV and PDF, is licensed under Creative Commons Attribution 4.0 International (CC-BY 4.0). Republication is permitted with attribution.
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