Owner decisions
Cost Segregation for Condos and Duplexes: Owner Buying Guide
Define what you own, what you rent, and which costs belong in a condo or duplex study before comparing proposals.
Rental homes · Small portfolios · CPA coordination
A fictional worked example with explicit study fees, incremental deduction assumptions, usable amounts and limits.
Fictional worked example. This does not describe a client, completed study or verified tax outcome. All deduction inputs are assumptions.
The fictional unit owner has a 900-square-foot rental. Only the agreed unit-related basis is considered; the example assigns no assumed basis to association-owned amenities.
The example assumes 900 square feet, a $2,000 Stratum study fee, and $500 of separately engaged implementation work. It assumes $10,000 of additional depreciation compared with the no-study baseline, a 24% marginal rate, and 100% usability in the modeled period. None of these deduction or implementation inputs is a quote or a completed study result.
Assumed tax reduction = $10,000 × 100% × 24% = $2,400. Combined assumed cost = $2,000 + $500 = $2,500. The arithmetic difference is $-100. This is an undiscounted early-period comparison; it is not a lifetime return, permanent savings estimate or recommendation.
Under these assumptions, the modeled tax reduction is $100 below combined costs. A positive reclassification amount can coexist with unattractive short-term economics. Later deductions, future use and sale treatment still require a full model.
The preparer must establish the depreciation difference, when deductions can be used, the relevant marginal rates, state treatment, later-year depreciation and sale consequences. This example does not calculate bonus eligibility or assign asset lives. Use the fee-benefit tool to substitute adviser-supported inputs, then retain the complete multi-year analysis before commissioning the work.
Owner decisions
Define what you own, what you rent, and which costs belong in a condo or duplex study before comparing proposals.
Interactive tool
Compare your property-specific study fee and implementation costs with an adviser-supported incremental deduction.
Start with your property
Stratum cost segregation studies cost $1 per square foot, with a $2,000 minimum per property. AE Tax Advisors hosts discovery. Confirm the property study scope and any separately engaged advisory or filing work.
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Published by Stratum Cost Segregation. Reviewed October 25, 2026. Educational guidance; your tax professional determines the treatment for your property, year and state. The IRS audit guide explains examination considerations and does not approve an individual study.