Cost Segregation ROI by Property Type
Two buildings at the same price can produce first-year deductions that differ by a factor of three. Use type is why.
Cost segregation return varies widely by property type because the percentage of a building's cost that sits in short-lived components depends on what the building does. A dental office dense with specialized plumbing, electrical, and cabinetry reclassifies far more than a warehouse shell of the same value, and the difference shows up directly in the first-year deduction.
What Drives the Percentage
A study moves cost out of the 39-year or 27.5-year building category into 5, 7, and 15-year categories. How much moves depends on three things: the density of specialized systems serving equipment rather than the structure, the amount of finish work such as cabinetry, decorative lighting, and floor coverings, and the extent of site improvements such as parking, lighting, and landscaping.
A building that is mostly structure with minimal finish reclassifies little. A building dense with equipment-serving systems and finish work reclassifies a great deal.
Typical Ranges by Property Type
These are the ranges we see in practice. Every building is studied on its own facts, and an actual engineering study can land outside these bands.
| Property type | Typical reclassified | First-year deduction on $1.5M basis |
|---|---|---|
| Dental / medical office | 25% - 40% | $375,000 - $600,000 |
| Restaurant | 25% - 40% | $375,000 - $600,000 |
| Short-term rental (furnished) | 25% - 35% | $375,000 - $525,000 |
| Car wash | 30% - 45% | $450,000 - $675,000 |
| Hotel / motel | 22% - 35% | $330,000 - $525,000 |
| Retail strip center | 20% - 30% | $300,000 - $450,000 |
| Self-storage | 20% - 35% | $300,000 - $525,000 |
| Multifamily apartment | 15% - 25% | $225,000 - $375,000 |
| General office building | 15% - 25% | $225,000 - $375,000 |
| Warehouse / industrial shell | 10% - 20% | $150,000 - $300,000 |
The spread is the point. A car wash and a warehouse at identical purchase prices can differ by more than $400,000 in first-year deduction, because one is essentially equipment wrapped in a building and the other is a structure with a concrete floor.
Why Car Washes and Restaurants Sit at the Top
Properties at the top of the range share a characteristic: a large share of the cost serves a process rather than the building. A car wash contains conveyors, water reclamation, specialized electrical, and dedicated plumbing, most of which is equipment by function. A restaurant carries hood systems, grease interceptors, specialized ventilation, and heavy finish work.
Medical and dental offices behave similarly, with dedicated vacuum and air lines, lead shielding, specialized cabinetry, and electrical serving specific equipment positions.
Why Warehouses Sit at the Bottom
An industrial shell is mostly structure: slab, frame, roof, and envelope, all of which remain 39-year property. What lifts a warehouse toward the upper end of its range is usually site work rather than the building, since parking, yard paving, site lighting, and fencing are 15-year land improvements and industrial sites often have a great deal of it.
Short-Term Rentals Are a Special Case
Furnished short-term rentals sit higher in the range than their long-term equivalents, and for a reason worth understanding. A furnished property carries appliances, furniture, window treatments, and electronics that are personal property rather than building components, and those are 5-year property regardless of the structure they sit in.
The result is that a short-term rental frequently reclassifies 25 to 35 percent where the same building operated as a long-term rental would reach 15 to 25 percent. The furnishings alone can account for a meaningful share of the difference.
This compounds with the passive activity treatment. A property where the average stay is seven days or less is not a rental activity under the Section 469 regulations, so an owner who materially participates can use the loss against active income. A higher reclassification percentage and a usable deduction is why this combination produces the largest results we see for business owners without real estate professional status.
Reading the Table Correctly
Two cautions. First, these percentages apply to depreciable basis, not purchase price. Land is not depreciable, and land can be a large share of the price in dense markets, so a $2,000,000 purchase might carry only $1,400,000 of depreciable basis.
Second, the first-year deduction is not the tax saving. The saving is the deduction multiplied by the marginal rate, and only if the deduction is usable against income the owner actually has. For a passive rental held by an owner with no passive income, a $500,000 deduction can produce no current benefit at all.
Key Takeaways
- Reclassification percentage is driven by use type, not by purchase price.
- Car washes, restaurants, and medical offices reclassify most; warehouse shells least.
- Percentages apply to depreciable basis, not purchase price; land is excluded.
- Site improvements are 15-year property and often lift otherwise plain buildings.
- The deduction is only worth its tax value if it is usable against income you have.
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Frequently Asked Questions
Which property type gets the best cost segregation result?
Properties where much of the cost serves a process rather than the structure. Car washes, restaurants, and medical or dental offices typically reclassify 25 to 45 percent of depreciable basis, compared with 10 to 20 percent for a plain warehouse shell.
Do apartment buildings benefit from cost segregation?
Yes, though typically at the lower end, around 15 to 25 percent, because residential construction has less specialized system density. Residential rental property also depreciates over 27.5 years rather than 39, so the baseline deduction without a study is already larger.
How much of the purchase price is usually land?
It varies widely by market, commonly 15 to 30 percent, and considerably more in dense urban areas. Land is not depreciable and is excluded from the study basis, so the allocation matters and should be supported rather than assumed.
Can I estimate my result before commissioning a study?
A preliminary estimate using property type, purchase price, land allocation, and placed-in-service date is usually enough to decide whether a full study is worthwhile. We provide that estimate before any engagement so the decision is made on numbers rather than on a range.
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