Real Estate · Section E
The real estate strategy hiding in your tax code.
Cost segregation isn't exotic. It's just under-explained. Here's how it works, when it pays off, and what to ask your CPA before December.
By the numbers — real estate is one of the few asset classes where the tax code does most of the work for you. The mechanic with the most leverage and the least public discussion is cost segregation. It's not exotic. It's not aggressive. It's just under-explained.
What it is, in one paragraph
When you buy a building, the IRS lets you depreciate it over 27.5 years (residential) or 39 years (commercial). But a building isn't just a building — it has carpet, cabinets, fixtures, fencing, landscaping, parking lot. Many of those components have shorter depreciation lives (5, 7, or 15 years). A cost segregation study reclassifies pieces of the building into those shorter buckets, which means you can depreciate them faster — sometimes in the same year you buy the property.
Why it matters
A typical study reclassifies 20–30% of a property's purchase price into shorter-life assets. With bonus depreciation rules (currently being phased down but still meaningful), you can deduct most or all of that in year one. On a $1M property, that can mean $200K–$300K of deductions in the year of purchase.
The catch most people miss
Real estate losses are passive by default — meaning they can only offset passive income. If you're a W-2 employee with rental property, you can't usually use a $250K paper loss to wipe out your salary.
The exception is the Real Estate Professional Status (REPS). If you (or your spouse) qualify as a real estate professional, your real estate losses become non-passive, and you can use them against W-2 income. The bar is high — 750 hours per year, more than half your working time in real estate — but for the right family setup, it's life-changing.
When cost seg is worth it
- Property purchase price > $500K (smaller properties: study cost vs. benefit)
- Plan to hold the property for at least 3–5 years (depreciation recapture math)
- You have passive income to offset, OR REPS qualification, OR another way to use the loss
- You're in a high marginal bracket (more deduction value)
The conversation to have with your CPA
Two questions that every property-buying client should bring to their CPA — ideally before December, not in April:
- "Should we run a cost segregation study on the property I bought this year? What's the projected benefit?"
- "What's my passive vs. non-passive income picture? Can I use the resulting loss this year, or do I need to plan for it differently?"
Most CPAs know cost segregation exists. Many will run it for you if you ask. Few will bring it up unprompted. That's the gap The Prosperity Society exists to close.