Cost Segregation in Multifamily: When It Makes Sense and When It Doesn’t

If you buy a $10M apartment building, how much depreciation should you get in year one?

For many investors, the answer depends on cost segregation and bonus depreciation.

You’ll often hear people say cost segregation creates massive tax savings in real estate. And in the right situations, it absolutely can.

But it’s also frequently misunderstood. Cost segregation doesn’t create new deductions. It simply changes when the IRS allows you to take them.

What Cost Segregation Actually Is

By default, residential real estate depreciates over 27.5 years. A cost segregation study analyzes the property and separates parts of the building that the IRS allows to depreciate faster.

For example:

5-year property

• Appliances

• Certain fixtures

• Carpeting

7-year property

• Some equipment and removable property

15-year property

• Land improvements like parking lots, sidewalks, and landscaping

Instead of treating the entire building as one asset, the study identifies pieces of the property that can be depreciated on shorter schedules.

Cost segregation essentially separates portions of the property that the IRS allows to depreciate faster than the standard 27.5-year schedule.

Many investors confuse cost segregation with bonus depreciation, but they serve different roles.

Cost segregation identifies and qualifies the components.

Bonus depreciation determines how quickly those qualified components can be deducted.

The study itself doesn’t create deductions. It simply allows investors to take more depreciation earlier in the ownership period.

With 100% bonus depreciation active, those components can often be fully expensed in year one.

Even without bonus depreciation, these shorter-life assets still depreciate faster because they use accelerated methods like the 200% declining balance for 5- and 7-year property and 150% declining balance for 15-year property, which front-loads depreciation into the early years.

Why Investors Care

The main reason investors use cost segregation is simple:

It pushes more depreciation into the early years of ownership.

That can translate into:

• Lower taxable income

• Higher after-tax cash flow

• Larger early investor distributions

• More capital available for reinvestment

Simple Example

The easiest way to see the impact is with a simple example.

Imagine a $10M multifamily purchase.

Without cost segregation

The building depreciates over 27.5 years.

Roughly $360K per year in depreciation.

With a cost segregation study

About 20–30% of the property might be reclassified into 5-, 7-, or 15-year property.

Those components now qualify for faster depreciation schedules.

If bonus depreciation is available (which it is right now), a large portion of those shorter-life components may be deductible immediately.

In some cases, first-year depreciation can exceed $1M, depending on the property and the current bonus depreciation rules.

When Cost Segregation Often Makes Sense

Situations where it tends to be valuable:

• Larger acquisitions where the tax impact is meaningful

• Investors with significant taxable income to offset

• Syndications trying to deliver early tax benefits to LPs

• Value-add deals where components are being replaced anyway

• Longer hold periods where early deductions provide real benefit

Cost segregation can also create additional value during renovations. Because the study identifies individual building components, investors can often deduct the remaining basis of removed components when units are renovated or systems replaced later.

When It Might Not Be Worth It

There are also cases where it adds little value.

For example:

• Smaller properties where the study cost outweighs the benefit

• Investors with minimal taxable income

• Very short hold periods where depreciation recapture may offset the advantage

• Situations where passive loss rules limit the deductions

Like most tax strategies in real estate, the answer depends heavily on the investor’s tax profile, hold strategy, and broader tax planning.

A Few Practical Notes

A legitimate cost segregation strategy requires an engineering study.Studies typically cost anywhere from a few thousand dollars to tens of thousands, depending on the property.

And the strategy interacts with several other tax factors, including:

• Bonus depreciation rules

• Passive activity limitations

• Depreciation recapture at sale

• State-level depreciation rules

Some states decouple from federal bonus depreciation rules entirely, which means cost segregation can also help optimize state-level tax treatment, not just federal taxes.

Because of these moving pieces, cost segregation should always be evaluated alongside a CPA or tax advisor.

TLDR

Cost segregation breaks a property into components that can depreciate faster than the standard 27.5-year schedule.

This reclassification allows investors to take more depreciation earlier, and when bonus depreciation is available, some of those components may be deducted immediately.

For the right deal and the right investor, that can create meaningful tax savings and improved after-tax cash flow.

Curious how other investors approach this:

Do you typically run cost segregation on every acquisition, or only on larger deals where the impact is meaningful?

1 comment