Cost segregation is a powerful tax planning tool for real estate owners and operators. In 2026, the stakes and the upside are materially higher than they have been in years. With 100% bonus depreciation restored, the introduction of Qualified Production Property (QPP), and increased Internal Revenue Service (IRS) scrutiny, the quality of a cost segregation study now matters more than ever.
This article explains what cost segregation is, how it works, and why cutting corners, especially through low-cost, artificial intelligence (AI)-only studies, can create more risk than reward in today’s environment.
What Is Cost Segregation?
At its core, cost segregation is an engineering-based tax analysis that accelerates depreciation deductions by identifying components of a building that can be depreciated over shorter recovery periods than the standard 27.5 years (residential) or 39 years (nonresidential).
Rather than depreciating an entire building as a single asset, a properly performed cost segregation study:
- Breaks down construction or acquisition costs
- Identifies assets with shorter class lives under the Internal Revenue Code (IRC)
- Reclassifies those assets into categories eligible for faster depreciation
The result is earlier tax deductions, improved cash flow and a higher after-tax return on real estate investments without changing the total amount of depreciation over the life of the property.
How Does a Cost Segregation Study Work?
To be properly executed — and lay the groundwork for future tax planning opportunities — cost segregation studies require coordination between tax professionals and engineers, thorough documentation, and adherence to IRS guidelines that unfold in the below steps:
- Feasibility and Initial Analysis: The process typically begins with a high-level review to determine whether a cost segregation study is likely to generate meaningful tax benefits by considering factors such as property type, purchase price, construction costs, timing and the owner’s tax profile.
- Document Collection and Review: If the study moves forward, the advisory team gathers and reviews key property records (i.e., purchase documents, construction drawings, invoices, appraisals and cost schedules), which establish the property’s cost basis and provide the foundation for accurate asset identification.
- Site Inspection and Asset Identification: When available, a qualified engineer performs an on-site or virtual inspection to understand how the building is constructed and used.
- During this step, building systems, interior finishes, site improvements and other components are evaluated to determine which assets may qualify for accelerated depreciation.
- Cost Allocation and Classification: Using engineering judgment and tax law guidance, costs are allocated to individual assets and classified into the appropriate recovery periods, such as five, seven, 15, or 27.5/39-year property.
- Preparation of the Final Report: The study concludes with a detailed, audit-ready report that documents the methodology, asset classifications, and supporting tax authority, supporting the updated depreciation schedules.
- This report should be retained for the life of the property to substantiate the deductions in the event of an IRS review.
Cost Segregation Analysis Real-world Example
A large medical real estate company engaged Cherry Bekaert after acquiring multiple healthcare properties to determine whether cost segregation could accelerate depreciation. The study uncovered significant opportunities, resulting in millions in additional first‑year depreciation and long‑term tax savings.
Asset Classes Identified in a Cost Segregation Study
A high-quality cost segregation study relies on detailed construction analysis, engineering judgment and tax law expertise to properly classify assets into the following categories: five, seven, 15, and 27.5 or 39-year properties.
Five-year Property
Five-year properties typically include:
- Specialized electrical and plumbing systems
- Dedicated equipment foundations
- Process-driven wiring or piping
- Certain removable partitions and finishes
Seven-year Property
Seven-year properties often include:
- Furniture, fixtures and equipment (FF&E)
- Certain cabinetry and millwork
- Dedicated systems that are not integral to the building structure
15-year Property (Land Improvements)
Common examples of 15-year properties include:
- Parking lots and sidewalks
- Site lighting
- Landscaping and fencing
- Stormwater and drainage systems
27.5 or 39-year Property
Assets classified as 27.5 or 39-year properties remain structural components of the building, such as:
- Load-bearing walls
- Roofs
- Structural floors and foundations
- Core HVAC systems
The defensibility of a cost segregation study depends on how clearly and accurately assets are identified, documented and supported.
Why Cost Segregation Matters
A cost segregation study delivers value by accelerating the timing of depreciation deductions, which can materially improve cash flow and after‑tax returns. Importantly, recent legislative changes have amplified these benefits, making cost segregation an increasingly crucial tax-planning tool for real estate owners, developers, and operators looking to reinvest capital, reduce tax liability or strengthen liquidity.
Increased Cash Flows
By accelerating depreciation on qualifying assets, cost segregation reduces taxable income in the early years of ownership. The resulting tax savings can free up capital that may be reinvested into operations, renovations, debt reduction or new acquisitions, helping property owners improve financial flexibility without taking on additional risk.
Maximized Tax Savings
Cost segregation allows components of a building to be depreciated over shorter recovery periods (five, seven or 15-year) rather than the standard 27.5 or 39-year schedule. This reclassification shifts depreciation deductions forward, enabling owners to recognize a larger portion of their tax benefits sooner and enhancing the overall efficiency of their real estate investment strategy.
Disposition Deduction Documentation
When building components are renovated, replaced, or removed, a cost segregation study can provide the detailed asset documentation needed to support disposition loss deductions. Without this level of detail, owners may be unable to properly write off the remaining basis of retired assets, potentially leaving tax savings unrealized.
100% Bonus Depreciation Eligibility
The restoration of 100% bonus depreciation has dramatically improved the economics of cost segregation studies.
Under current law, assets with recovery periods of five, seven, and 15 years are eligible for full expensing in the year placed in service, and cost segregation effectively converts long-term depreciation into immediate deductions.
Why this matters:
- The payback period on a cost segregation study is often measured in months, not years
- The time value of money significantly amplifies the benefit (especially in a higher interest rate environment)
- Even moderate-sized projects can generate six or seven-figure cash-flow benefits in the first year
In short, with 100% bonus depreciation restored, a cost segregation study is both a deferral strategy and a near-term liquidity strategy.
Qualified Production Property Deduction Support
The introduction of QPP under IRC §168(n) has expanded the role of cost segregation for manufacturers.
QPP allows taxpayers to immediately expense 100% of the cost of qualifying nonresidential real property when that property is used as an integral part of a qualified production activity and placed in service within a defined statutory window.
A cost segregation study is often the only practical way to:
- Identify which portions of a facility qualify as QPP
- Separate qualifying production areas from non-qualifying uses (e.g., offices, admin, R&D)
- Allocate costs in a manner that is both tax-efficient and defensible
Risks of an AI-driven Cost Segregation Study
The rise of low-cost, AI-driven cost segregation studies has been one of the most notable trends in recent years. While automation has its place, over-reliance on AI introduces serious limitations.
Common issues with low-cost studies include:
- Lack of engineering site inspections
- Overgeneralized assumptions based on templates
- Insufficient documentation and asset narratives
- Minimal audit defense support
- Weak coordination with depreciation, repair capitalization and credit strategies
The IRS increasingly uses data analytics to identify outliers, and studies that rely on generic allocations are easier to challenge. When a study fails, the cost is not just lost deductions (it can include recapture, penalties, interest and reputational risk).
In today’s environment, quality, documentation, and defensibility matter far more than speed or price.
Cost Seg Study: Frequently Asked Questions (FAQs)
Technically, yes, but doing so would not be advisable. “Do-it-yourself” (DIY) and purely AI‑driven cost segregation studies often rely on generic assumptions and (potentially inaccurate) user‑entered data, which can lead to misclassified assets, missed deductions and reports that fail to meet IRS documentation standards.
With heightened IRS scrutiny in this area, cost segregation studies are expected to follow established audit guidelines and be supported by engineering and tax experts, making professionally prepared, well‑documented studies far more defensible and effective.
For many property owners, the answer is yes. Although a cost segregation study requires an upfront investment, accelerating depreciation on qualifying components can generate meaningful tax savings and increased cash flow over time, often producing a strong return relative to the cost of the study. The value ultimately depends on factors such as property type, size and timing, which is why evaluating the opportunity with a qualified advisor is key to determining potential return on investment.
Cost segregation can apply to a wide range of depreciable real estate, including most commercial properties and larger residential buildings like apartment complexes and dormitories. Eligible properties span everything from offices, retail centers, warehouses, hotels, restaurants, and medical facilities to specialized assets such as manufacturing plants, self-storage facilities, auto dealerships and entertainment venues.
New construction, renovations and leasehold improvements may also qualify, since many components within these projects can be depreciated faster than the building as a whole. Given the wide range of property types that may qualify, cost segregation is a planning opportunity worth evaluating with a trusted advisor to determine how it can support your broader tax and cash flow objectives.
The ideal time to perform a cost segregation study is immediately after, or as close as possible to, the date a property is acquired, newly constructed or placed in service. While owners can complete a look-back study later (and capture depreciation benefits without amending tax returns for years prior), earlier analyses allow for the most accurate asset identification and maximize tax benefits from the outset.
Your Guide Forward
In 2026, with restored bonus depreciation, the emergence of QPP, and heightened IRS scrutiny, the question is not whether to do a study, but how well it is done.
At Cherry Bekaert, our Tax Credits & Incentives Advisory team takes a bespoke approach to cost segregation for each of our clients. We combine:
- Licensed engineers and construction team members
- Experienced tax professionals who understand IRS standards
- Deep business acumen across bonus depreciation, QPP, energy credits and accounting method changes
- A commitment to audit-ready, defensible studies
Cherry Bekaert’s Cost Segregation Services tailor each study to the asset type, the taxpayer’s broader tax profile and the strategic objectives of the business.
