A How-To Guide for Taxpayers and Tax Professionals for Cost Segregation in Real Estate
Feb 3, 2026

Cost segregation is a powerful tax strategy that allows real estate owners to accelerate depreciation and maximize significant tax savings, but only when executed correctly. For taxpayers and tax professionals, understanding how cost segregation works is essential to maximizing deductions while staying compliant with IRS guidelines.
This guide will help you identify properties that qualify for implementing a defensible study. It provides the practical insight needed to apply cost segregation strategically and support long-term tax planning with confidence.
What Is Cost Segregation in Real Estate?
Real estate properties consist of multiple assets with varying tax recovery periods. Tax law accounts for these differences through the Modified Accelerated Cost Recovery System (MACRS), which determines asset depreciation periods.
MACRS depreciates commercial property over 39 years and residential rental property over 27.5 years. Without a cost segregation study, all qualifying assets are depreciated using straight-line depreciation over these standard timelines. While this makes sense for long-lasting components like building structure, it doesn’t accurately reflect the shorter lifespan of assets like carpet or kitchen cabinetry. As a result, these assets remain on the books and depreciate over decades.
A real estate cost segregation study changes that. Engineers identify and quantify individual building components and assign costs to each asset. These costs are then segregated into depreciation categories based on their appropriate class lives.
Cost segregation studies identify components of a building that qualify for shorter MACRS recovery periods, typically 5, 7, or 15 years instead of the standard 27.5- or 39-year life for real property. Typical assets identified in a cost segregation study include:
5-year assets: carpet, countertops, break room sinks, cabinetry, decorative moldings, specialty lighting, dedicated outlets, fans, blinds, and more.
7-year assets: office furniture
15-year assets: land improvements such as drainage systems, parking lots, landscaping, outdoor swimming pools, protective bollards, sidewalks, and more.
How Cost Segregation Creates Value for Real Estate Investors
Real estate cost segregation reduces tax liability while improving cash flow. By accelerating depreciation deductions, investors benefit from the time value of money. Deductions taken today are more valuable than those claimed years down the line. The increased cash flow generated can then be reinvested to support future growth.
A real estate cost segregation study also serves as a foundation for additional tax-saving strategies. Bonus depreciation allows eligible assets to be written off beyond standard depreciation schedules.
Can Cost Segregation Be Applied to Older Properties or Renovations?
A real estate cost segregation study can be performed at virtually any point in a property’s life cycle. While the greatest benefit is typically achieved when a study is completed immediately after a property is placed in service, it is not required to be done at that time.
If a study was not completed early on, the IRS allows taxpayers to recover missed depreciation through a “look-back” cost segregation study. By reclassifying assets to their correct recovery periods, taxpayers can catch up on depreciation they would have claimed had the study been performed from the start. This catch-up adjustment is made using IRS Form 3115.
Upcoming renovations are also a strong trigger for real estate cost segregation. At first glance, it may seem unnecessary to analyze assets that are about to be removed. However, identifying and quantifying those assets before renovation allows taxpayers to take advantage of Partial Asset Disposition (PAD) elections.
PAD elections allow the remaining depreciable basis of disposed assets to be written off in the year they are removed. This strategy can generate substantial benefits but requires detailed asset documentation, which a cost segregation study provides.
Is a Real Estate Cost Segregation Study a Smart Investment?
Yes, a real estate cost segregation study can give a strong return on investment when applied correctly. While cost segregation fees vary by property size, scope, and complexity, the potential tax savings often far exceed the upfront cost.
In many cases, the return on investment for a cost segregation study is well above 10 to 1, making it a highly effective tax planning strategy for qualifying properties.
When Is the Best Time to Conduct a Cost Segregation Study?
A cost segregation study can be completed at any point after a property is acquired, constructed, or renovated. However, the most effective timing is typically within the same year as the purchase, construction, or remodeling of an investment property.
Conducting the study early helps maximize tax savings during a period when real estate owners are often making significant capital investments.
Which Property Types Are Eligible for Real Estate Cost Segregation?
Office buildings, hotels, and retail spaces are often the first property types associated with cost segregation, but they represent only part of the picture. A real estate cost segregation study can be applied to nearly all types of commercial real estate, as well as many residential rental properties.
Some of the most common property types benefiting from cost segregation today include:
Industrial and manufacturing facilities
Auto dealerships
Self-storage facilities
Assisted living facilities
Mobile Home Parks
Pros and Cons of Cost Segregation
Advantages of Cost Segregation
The primary benefit of cost segregation is its ability to generate meaningful tax savings. This is achieved through several key advantages:
Accelerated depreciation: Rather than depreciating an entire property over 27.5 or 39 years, cost segregation allows certain components, such as electrical and plumbing systems, to be depreciated over shorter recovery periods of 5, 7, or 15 years.
Tax reduction: By accelerating depreciation, investors can claim larger deductions in earlier tax years, which helps reduce taxable income for those periods.
Increased cash flow: Lower tax liability can free up cash that investors can reinvest into additional properties or use to grow their real estate portfolios.
Drawbacks of Cost Segregation
Cost segregation is a powerful tax strategy, but there are a few considerations to keep in mind:
Upfront costs: Cost segregation studies involve professional fees that vary based on property size, type, and available documentation. While pricing can range from $2,000 to $15,000, many cost-effective options are available depending on the scope and complexity of the study.
Time commitment: Completing a cost segregation study takes time. Depending on the property, the process can take up to two months from start to finish.
Final Thoughts: Cost Segregation in Real Estate
Reducing tax liability and increasing portfolio performance require more than guesswork—they require precision, documentation, and the right strategy. Cost segregation is most effective when supported by accurate data, defensible processes, and a clear understanding of how depreciation impacts long-term tax planning.
While traditional studies can be time-intensive and costly, modern approaches are changing that. By leveraging advanced technology and streamlined processes, cost segregation can now be delivered more efficiently, with faster turnaround times and more cost-effective pricing, without compromising accuracy.
With SegTax’s expertise and proven systems in place, real estate owners can maximize allowable deductions, strengthen cash flow, and make informed investment decisions with confidence.