Depreciation is the quiet engine of real estate returns. Cost segregation makes that engine run faster — by reclassifying components of a building into shorter recovery periods, you pull deductions forward into the years you need them most.
What a study actually does
A standard commercial building depreciates over 39 years (27.5 for residential). A cost segregation study breaks the asset into its parts — flooring, fixtures, site improvements, specialized electrical — and reclassifies the qualifying portions into 5-, 7-, and 15-year buckets. Those shorter lives are eligible for accelerated and bonus depreciation.
The practical effect: on a building where you might have deducted a few percent of basis per year, a study can frequently move 20–35% of the purchase price into the first year of ownership.
Where the strategy connects to the rest of the plan
Cost segregation is not a standalone trick. It is most powerful when it is part of a coordinated position:
Pair it with real estate professional status (or the short-term rental exception) so losses can offset active income, not just passive.
Sequence it against a 1031 exchange so you are not creating depreciation recapture you cannot manage.
Layer it with bonus depreciation while the bonus percentage is still meaningful.
The honest caveats
Accelerated depreciation is a timing benefit, not free money — recapture is real, and a study has a cost. It earns its keep when the time value of the deferral, and the ability to shelter income today, outweigh the recapture you will eventually face. For investors with significant active income and a long hold, that math is usually decisive. We model it explicitly before recommending a study.
Nothing here is tax advice for your specific situation. It is the framework we use before bringing in your CPA to run the numbers that matter.
Have a deal or a portfolio question?
We bring the same discipline you just read about to real mandates.