A Cost Segregation Study is a detailed analysis that separates a property’s purchase, construction, or improvement costs into different asset categories for tax purposes.
Commercial buildings are generally depreciated over 39 years, while residential rental buildings are depreciated over 27.5 years. However, certain components, including carpeting, cabinetry, decorative lighting, and land improvements, may qualify for shorter depreciation periods of 5, 7, or 15 years.
An engineering-based study identifies these components, calculates their costs, and documents the appropriate tax treatment, helping property owners claim deductions sooner while supporting compliance with IRS requirements.
Ordinarily, building owners recover construction or acquisition costs through depreciation deductions spread over decades. Cost segregation identifies assets eligible for shorter recovery periods, moving certain deductions into earlier years.
For example, a $5 million apartment property might contain $1.5 million in qualifying shorter-lived components. Depending on eligibility, those components could generate substantial first-year deductions rather than deductions spread over 27.5 years.
The result is improved near-term cash flow. Timing matters because earlier tax savings can support renovations, debt payments, and additional investments.
Rising and Falling Interest Rates can influence the value of receiving these tax savings sooner.
Cost segregation real estate opportunities exist across commercial buildings, apartment complexes, rental properties, and facilities undergoing significant renovations.
Properties with substantial interior finishes, specialized electrical systems, removable fixtures, equipment-related improvements, or exterior improvements often offer greater opportunities for reclassification.
Restaurants, hotels, manufacturing facilities, and certain medical properties may contain significant qualifying components. Business tenants making substantial leasehold improvements may also benefit.
The greatest opportunities generally arise when a significant portion of the property’s cost relates to assets with shorter recovery periods. Property size, construction complexity, and the amount invested in qualifying improvements all influence potential savings.
The One Big Beautiful Bill Act restored 100% first-year depreciation for eligible property acquired and placed in service after January 19, 2025. Qualifying components identified through cost segregation may therefore be deducted immediately rather than over several years.
However, depreciation recapture can create additional taxable income when a property is sold. The amount depends on the assets involved, the depreciation claimed, and the transaction’s structure.
Owners considering a future sale or 1031 exchange should evaluate these consequences before proceeding. Immediate deductions can be valuable, but the property’s expected holding period affects the overall financial benefit.
Ideally, owners should commission a study shortly after acquiring, constructing, or substantially renovating a property. Early planning helps identify eligible components and capture available deductions when the property enters service.
Studies can also be performed for properties placed in service in prior years. When the applicable accounting method change procedures are satisfied, eligible taxpayers may generally use IRS Form 3115 to implement the change and claim a Section 481(a) adjustment for previously unclaimed depreciation.
Professional study fees vary based on the property’s size, type, complexity, and scope of the analysis. Commercial studies may cost several thousand dollars and can exceed $20,000 for larger or more complex properties.
Legal Fees and Transaction Costs should also be reviewed when establishing the property’s depreciable basis and evaluating the overall financial benefit.
Qualified engineers and tax professionals typically collaborate on cost segregation studies. Relevant experience includes construction cost estimation, engineering analysis, and federal depreciation rules. An engineering-based report with detailed asset classifications and supporting documentation helps establish defensible deductions during IRS examinations.
Yes. Properties placed in service in previous years may qualify for a study. Owners can potentially recover missed depreciation deductions through IRS Form 3115 without amending prior returns, provided they meet the applicable accounting method change requirements.
Cost segregation may increase rental property deductions, but passive activity loss rules can limit their immediate use. Losses that cannot offset current income may carry forward. An owner’s participation level, income, and other circumstances determine when deductions provide tax benefits.
Possibly. The decision depends on property value, qualifying improvements, tax circumstances, and study costs. Smaller properties with substantial eligible components may justify the investment. Owners should compare projected tax savings against professional fees and potential future tax consequences before proceeding.
For more than four decades, Bennett Thrasher has provided businesses and individuals with strategic business guidance and solutions through professional tax, audit, advisory, and business process outsourcing services. Contact Bennett Thrasher’s Real Estate and Hospitality Tax Group, or call us at 770.396.2200.
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