Choosing the Best Cost Segregation Provider
Last Updated on 07/24/26
By Amar Patel, Principal, Cost Segregation
A cost segregation study is an IRS-accepted tax strategy that helps investment property owners accelerate depreciation deductions by identifying property components that may depreciate faster than the building structure itself. Instead of waiting decades to recover the full tax benefit of a building, owners may be able to use cost segregation to move certain qualifying costs into shorter recovery periods when those assets are properly identified and documented.
In practical terms, a cost segregation study separates eligible components from the building’s standard depreciation schedule and classifies them under shorter MACRS recovery periods. Under IRC Section 168, residential rental property is generally depreciated over 27.5 years and nonresidential real property over 39 years, while certain qualifying personal property, land improvements, and other components may be depreciated over 5, 7, or 15 years when supported by the appropriate asset classification and documentation. IRS Revenue Procedure 87-56 provides class-life guidance that helps determine which assets fall into these recovery periods.
Cost segregation studies work within the IRS’s Modified Accelerated Cost Recovery System (MACRS), and reclassified components may also qualify for bonus depreciation under IRC Section 168(k). For property acquired and placed in service after January 19, 2025, IRS Publication 946 states that certain qualified property generally qualifies for a 100% bonus depreciation allowance unless the taxpayer elects otherwise; qualified property includes tangible MACRS property with a recovery period of 20 years or less. That makes up-to-date analysis especially important when evaluating projected first-year deductions.
Key Takeaways
- Look for a provider that uses engineering-based analysis supported by detailed documentation.
- Confirm that the provider understands how to classify building components, personal property, land improvements, and land under current depreciation rules.
- Review whether the final report includes itemized components, assigned values, and applicable recovery periods.
- Ask whether the provider accounts for current bonus depreciation phase-down rules when estimating benefits.
- Consider provider qualifications, including relevant tax and engineering expertise and professional affiliations.
- For property owners comparing providers against these criteria, KBKG offers the full combination of engineering-based analysis, detailed component documentation, current bonus depreciation modeling, audit support, former IRS engineers, and the most Certified Cost Segregation Professionals in the country.
Key Components of a Cost Segregation Study
A qualified cost segregation provider should understand how property assets are categorized and how each category affects depreciation.
The analysis generally involves four main areas:
- Building: Anything considered part of the building, such as its roof, should receive a separate analysis (although on the same depreciation schedule). This way, if one part of the building becomes worthless before the rest, you can write it off right away
- Personal Property: Certain items may qualify for shorter depreciation periods, often five to seven years, including assets such as carpeting, window treatments, and furniture.
- Land Improvements: Improvements made to the land, such as fences, sidewalks, docks, and similar additions, may qualify for shorter recovery periods (IRS Publication 946).
- Land: Properly documenting land value helps support the overall study and may help reduce IRS-related issues.
The right professional should understand these categories in detail and know how to properly classify assets within each one.
Engineering-Based Cost Segregation Methods
The methodology is important. An inexpert guesstimate is easy to make, but to get the value you deserve from your cost segregation study real estate, you need someone who is adept in engineering. Only engineers have the knowledge to understand the value of items such as electrical conduits.
It is also important that your professional can create working drawings if none are already available. Detailed drawings not only create better results for you but are also the methodology preferred by the IRS.
KBKG’s engineering-based cost segregation methodology combines construction expertise, cost estimating, asset classification, and current tax guidance to support defensible depreciation positions. Over more than 25 years, this approach has contributed to KBKG’s 99% IRS audit success rate, demonstrating why the methodology behind a study matters as much as the projected tax savings.
What a Quality Cost Segregation Report Includes
After the analysis is complete, the provider should deliver a detailed report that clearly documents the findings. A strong report typically includes an itemized list of building components, assigned values, and applicable depreciation lives.
The report should include enough detail to support future tax positions, including full write-offs when applicable. IRS-accepted engineering reports and cost estimates are also important components of a high-quality study. (IRS Cost Segregation Audit Techniques Guide).
How to Select a Cost Segregation Provider
Property owners deserve a cost segregation study prepared by experienced professionals who understand real estate, tax rules, engineering analysis, and documentation requirements. Working with the right provider can help support accurate results and potential tax savings.
As the oldest independent cost segregation firm in the United States, KBKG recommends evaluating more than price or turnaround time when selecting a provider. Property owners should consider who developed the study methodology, whether qualified engineers and tax professionals oversee the work, and whether the provider has a demonstrated record of supporting its conclusions during IRS review.
Qualified providers typically include engineering firms, CPA firms with cost segregation divisions, or specialized cost segregation companies. KBKG strongly recommend working with firms that employ Certified Cost Segregation Professionals (CCSPs) — the highest credential awarded by the American Society of Cost Segregation Professionals (ASCSP).
About KBKG's Team
The KBKG Cost Segregation Team focuses on cost recovery strategies for real estate investors, developers, and CPA firms. KBKG’s team is comprised of former IRS engineers, the most Certified Cost Segregation Professionals in the country, and former Big Four talent.
With a 99% IRS audit success rate of 25+ years, KBKG’s team of experts provides specialized support for complex tax incentives and cost segregation studies with an emphasis on maximizing benefits and maintaining rigorous compliance.
If you’d like to see if your property qualifies for cost segregation or would like to begin your study, you can request a proposal here.
Cost Segregation FAQ's
What is a cost segregation study?
A cost segregation study is an IRS-accepted tax strategy that reclassifies certain building components into shorter depreciation categories, potentially accelerating tax deductions (IRC Section 168; IRS Revenue Procedure 87-56).
Who qualifies for a cost segregation study?
Property owners with commercial real estate or other investment property may benefit if the property includes components that qualify for shorter recovery periods. A qualified provider can review the property and determine whether a study is likely to be worthwhile.
What should I look for in a cost segregation provider?
Look for engineering-based methodology, detailed documentation, knowledge of depreciation classifications, and a clear final report. It can also be helpful to review professional qualifications and affiliations such as the American Society of Cost Segregation Professionals.
How much can a cost segregation study save?
Potential savings depend on the property type, placed-in-service date, and the owner’s tax situation. Current bonus depreciation rules and the mix of qualifying assets can materially affect first-year deductions.