6 Components Of A Solid Cost Segregation Study
Cost Segregation is a well-established, IRS-recognized tax strategy, but the quality of the work behind any given study varies significantly from one provider to the next.
On the surface, a study built on shortcuts or estimates might look fine, but the difference shows up in the documentation, your CPA’s ability to use the numbers, and potentially needing to defend it in an audit.
Before choosing a Cost Segregation provider, it’s worth knowing what a solid study includes and a few red flags to consider.
Here are 6 components to a solid Cost Segregation study.
1. A Physical On-Site Inspection
This is the non-negotiable foundation of every credible Cost Segregation Study. A qualified professional must visit the property in person to identify and document the specific components that qualify for accelerated depreciation.
The reason this matters is for accuracy purposes. Since Cost Segregation reclassifies certain building components, such as flooring, electrical systems, specialty plumbing, and site improvements, these reclassifications can’t be done reliably from a floor plan, photo, or virtual walkthrough.
Desktop reviews and rule-of-thumb estimates skip this step in the name of speed or cost savings, and the result is a study built on assumptions rather than observation.
If a provider does not conduct a physical site inspection, the study starts on weak ground regardless of how the final report looks.
2. Engineering-Based Analysis Aligned With the IRS Audit Techniques Guide
The IRS publishes a Cost Segregation Audit Techniques Guide (ATG), which is a detailed framework outlining how studies should be conducted and how assets should be classified.
In practice, this means every component reclassification is supported by engineering analysis, not industry-average percentages applied to the building as a whole. While percentage-based approaches are faster and cheaper to produce, they don’t reflect what’s actually in your building, and they don’t hold up the way an engineering-based study does.
The ATG exists specifically to distinguish thorough work from shortcuts, and a study that follows these guidelines is far more capable of withstanding IRS scrutiny.
3. A Detailed Component-Level Report
While a finalized study helps you optimize your taxes, the report should serve you beyond tax season.
A quality report provides a component-by-component breakdown of each asset that was reclassified, including what it is, where it’s located, what depreciation life was assigned, and the reasoning for its classification.
This level of detail matters well beyond the first year’s deductions.
Your CPA needs organized and accurate fixed asset records to correctly capture depreciation and to be able to later handle dispositions of property in the event of the removal or renovation of a building or tenant space.
A report without this underlying documentation won’t serve you or your CPA well beyond the initial tax return.
4. Professional Credentials
Cost Segregation is a specialized field, and professional credentialing matters. The American Society of Cost Segregation Professionals (ASCSP) is the only non-governmental organization that sets professional standards for the industry.
When evaluating a provider, it’s worth asking whether the person conducting your study holds ASCSP membership or is working toward the Certified Cost Segregation Professional (CCSP) designation.
While these credentials aren’t required by the IRS, they signal a commitment to professional standards.
5. A Clear Timeline and Direct Communication
A well-run Cost Segregation Study should have a predictable timeline, with a few touchpoints along the way.
The exact timing will depend on the firm you are working with and the time of year, but having clear expectations and communication is important.
This is especially important if your CPA needs the study to be done before a tax filing deadline.
6. An Honest Assessment Before Any Work Begins
Perhaps the clearest indicator of a quality provider is what happens before any agreement is signed. Cost Segregation is not the right move for every property or tax situation.
Here are a few examples of when Cost Segregation might not make sense:
- Your property has a low depreciable basis
- The owners have limited taxable income to offset
- A near-term sale is expected
A provider willing to evaluate your specific situation and tell you honestly whether a study makes sense, before collecting any fees, is one you can work with.
If every property or situation is automatically a good candidate, treat that as a warning sign rather than a selling point.
The Right Starting Point For Cost Segregation
At McClarigan CPAs & Advisors, every Cost Segregation engagement starts with an upfront assessment. Our certified team evaluates the property and the owner’s situation before any work begins, and we give a straight answer on whether a study is likely to generate meaningful results.
If it is a good fit, the study starts with a physical on-site inspection, engineering-based analysis aligned with the IRS Audit Techniques Guide, and a final report delivered within six weeks. If it isn’t, we let you know that before you spend a dollar.
Don’t let the unknowns of Cost Segregation keep you from seeing if it’s right for your situation. Contact us to start your Discovery Assessment!