Multifamily is one of the most reliable cost segregation property types: a sound engineering-based study typically reclassifies 25–35% of the depreciable basis out of the 27.5-year residential schedule and into 5-, 7-, and 15-year property. On a $10 million acquisition, that can move $2.5–$3.5 million of deductions into the early years — and when paired with bonus depreciation, a large share lands in year one.
The reason is density: apartment communities are packed with short-life finishes, appliances and extensive site work. For both individual owners and syndicators raising capital, that front-loaded deduction is often the difference between a good return and a great one.
Here is what makes apartments such strong candidates, which components carry the value, and how the benefit flows through a partnership to limited partners.
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Why Apartments Reclassify So Well
Residential rental property depreciates over 27.5 years by default — already faster than the 39 years that applies to commercial buildings, which gives multifamily a head start. But the bigger driver is the sheer density of short-life assets per dollar of basis:
- Unit-level finishes repeat across every apartment — flooring, cabinetry, countertops, and decorative lighting in 50, 100, or 300 units add up fast, and most of it is 5-year property.
- Appliances are 5-year property — refrigerators, ranges, dishwashers, microwaves, and in-unit washer/dryers in every unit.
- Extensive site improvements — parking lots, sidewalks, landscaping, site lighting, fencing, signage, pools, and clubhouses — are 15-year property and are unusually large on garden-style and suburban communities.
- Amenity spaces — fitness centers, leasing offices, and clubhouses carry their own dedicated electrical, finishes, and equipment.
What a Multifamily Study Pulls Into Each Bucket
An engineering-based study walks the property and the cost records and assigns each component to its correct MACRS life. For a typical garden-style apartment community, the buckets land roughly like this:
- 5-year (≈15–22% of basis): appliances, carpet and vinyl plank flooring, cabinetry and countertops, window treatments, decorative lighting and millwork, and dedicated electrical serving specific equipment.
- 15-year (≈10–18% of basis): all land improvements — paving, curbs, sidewalks, landscaping, irrigation, site lighting, fencing, signage, pools, and dog parks.
- 27.5-year (the remainder): the building shell, structure, roof, and core mechanical, plumbing, and HVAC distribution.
Note that multifamily generally does not carry a meaningful 7-year bucket — that is more typical of certain equipment-heavy property types. The center of gravity for apartments is the 5-year finishes and the 15-year site work, which together commonly reach 25–35% of basis.
"The use of the property and its components, rather than the type of business in which it is used, generally determines the proper recovery period... Land improvements and tangible personal property must be distinguished from the building's structural components." — IRS Cost Segregation Audit Techniques Guide, Chapter 2
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Pairing the Study With Bonus Depreciation
The 5-, 7-, and 15-year components a study identifies are exactly the assets eligible for bonus depreciation, which lets you deduct a large share of that reclassified cost in a single year rather than spreading it out. On a newly acquired apartment community, the combination of a cost segregation study and bonus depreciation routinely produces a first-year deduction worth a significant fraction of the equity invested. (See our current bonus depreciation guide for the rules in effect this year.)
How Syndicators Pass the Benefit to Investors
Most larger apartment deals are owned through a partnership or LLC that syndicates equity from limited partners. Cost segregation is central to how those deals market their tax efficiency:
- The deduction flows through on the K-1. The partnership runs the study, and the accelerated depreciation passes through to each partner in proportion to ownership.
- It often creates a first-year paper loss that LPs can use against passive income — and, for those who qualify, more broadly.
- It improves after-tax IRR without changing a dollar of property cash flow — which is why a cost segregation study is now standard underwriting on institutional-quality multifamily.
- Already own it? A look-back study still works. A community acquired in a prior year can claim its missed depreciation through a Form 3115 catch-up. (See our catch-up depreciation guide.)
What It Costs vs. What It Returns
Traditional engineering firms charge $10,000–$30,000+ for a multifamily study and take weeks. ClickDrag delivers a fully documented study in days, at roughly 80% less, by combining engineering rigor with AI-driven analysis of your rent roll, construction costs and closing documents. On a multimillion-dollar apartment deal, the first-year tax benefit typically exceeds the study cost many times over. Run your property through our free calculator to see the estimate.
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Frequently Asked Questions
How much can cost segregation save on an apartment building?
A multifamily study typically reclassifies 25–35% of the depreciable basis into 5- and 15-year property. On a $10 million community that is roughly $2.5–$3.5 million of deductions accelerated into the early years — and combined with bonus depreciation, much of it can be deducted in year one.
What depreciation period applies to apartment buildings?
Residential rental property, including apartment buildings, depreciates over 27.5 years by default — faster than the 39 years that applies to commercial property. A cost segregation study moves eligible components into 5-, 7-, and 15-year schedules, leaving only the building shell on the 27.5-year life.
Which apartment components qualify for accelerated depreciation?
Primarily unit appliances, flooring, cabinetry and countertops, decorative lighting and millwork, and dedicated electrical (5-year), plus all land improvements — parking, sidewalks, landscaping, site lighting, fencing, signage, and pools (15-year). The structure, roof, and core mechanical systems remain on the 27.5-year schedule.
How does cost segregation work for a real estate syndication?
The partnership that owns the property commissions the study, and the resulting accelerated depreciation passes through to each limited partner on their K-1 in proportion to ownership. This often creates a first-year paper loss that improves investors' after-tax returns without changing the deal's cash flow.
Can I do cost segregation on an apartment I bought years ago?
Yes. A look-back study reclassifies the property as of its original placed-in-service date and lets you claim the missed depreciation as a catch-up deduction this year using Form 3115 — no amended returns required.
Is cost segregation worth it for a small apartment building?
Generally yes once the depreciable basis is above roughly $500,000 and you have taxable income to offset. Because ClickDrag's pricing is a fraction of legacy engineering firms, the breakeven is far lower than it used to be, which brings smaller multifamily properties into the money.
The Bottom Line
Apartments combine a favorable 27.5-year starting point with an unusually high density of short-life finishes and site improvements — which is why multifamily consistently ranks among the best cost segregation candidates. Whether you own a single building or syndicate large communities, a study reclassifying 25–35% of basis, paired with bonus depreciation, can transform the first-year economics of the deal.
See what your community would produce — start your cost segregation study or see our pricing.
