Cazes LawTax & Business Law, Plainly Explained

Cost Segregation: Accelerating Depreciation on Commercial Property

June 3, 2026

Commercial property owners often assume depreciation just happens on autopilot over a set number of years, with no room for planning. That is not quite right. A cost segregation study can reclassify parts of a building to accelerate deductions and improve your cash flow well ahead of schedule.

I coordinate with CPAs and cost segregation firms regularly for clients who own commercial and investment real estate. Here is what a cost segregation study actually does and who benefits from one.

1. What a cost segregation study actually is

Ordinarily, a commercial building is depreciated over a long, standard recovery period as a single asset. A cost segregation study breaks the building down into its component parts and identifies pieces that qualify for much shorter depreciation periods.

Certain electrical work, plumbing tied to specific equipment, carpeting, decorative fixtures, parking lots, and landscaping can often be reclassified out of the building's long depreciation schedule and into categories that depreciate over five, seven, or fifteen years instead.

2. Why it can meaningfully improve cash flow

Moving deductions earlier in the life of the property means larger tax deductions in the early years of ownership. That reduces your current tax liability and frees up cash that would otherwise go to the IRS.

This does not create new deductions out of nothing. It shifts the timing so more of the deduction happens now rather than spread evenly over decades. For an owner who wants cash today to reinvest, pay down debt, or fund the next acquisition, that timing shift can matter a great deal.

3. Who is a good candidate for a study

Cost segregation tends to make the most sense for owners who purchased, constructed, or substantially renovated a commercial property, particularly if the building has meaningful value in fixtures, equipment, and site improvements rather than just structural shell.

It matters less for owners who plan to sell very soon, since accelerated depreciation can increase depreciation recapture on a future sale. It is generally a better fit for owners planning to hold the property for a longer stretch, or who can pair the strategy with other planning, such as a future 1031 exchange.

4. Why the study needs to be done properly, by qualified professionals

A cost segregation study is a technical, engineering-based analysis, not a rough estimate from a spreadsheet. The IRS has scrutinized studies that lack proper documentation or that push classifications too aggressively.

I want my clients using a firm with real engineering and tax expertise, producing a report that can stand up if the return is ever questioned. A poorly documented study can create more risk than it is worth.

5. Coordinate with your CPA before you commit

The value of a cost segregation study depends heavily on your overall tax situation, including whether you have enough income to use the accelerated deductions and how the passive activity loss rules apply to you. Bonus depreciation rules also affect how much of the reclassified cost you can deduct immediately, and those rules change over time, so consult your CPA on current bonus depreciation rules before you decide.

I also want the study coordinated with your entity structure and any planned financing or sale, so the tax benefit is not undermined by something happening elsewhere in your plan.

Cost segregation can be one of the more effective tools for owners of commercial real estate, but it needs to be done right and fit your broader plan. If you own commercial property and want to know whether a study makes sense for you, reach out through blgattorney.com or call my Oklahoma City office to talk it through.