Can You Do a Cost Segregation Study on an Older Residential Rental Property?

The short answer is yes.

One of the biggest misconceptions we hear from real estate investors is that a cost segregation study only makes sense for a newly built home or a property that was recently purchased. In reality, many residential rental properties that are 10, 20, or even 50 years old can still qualify for significant tax savings.

Whether you own a long-term rental, a short-term rental (Airbnb or VRBO), or a vacation rental, the age of the property alone does not determine whether it qualifies for a cost segregation study.

Does the Age of the Home Matter?

No.

The IRS doesn't require a residential rental property to be new in order to qualify for a cost segregation study.

Instead, what matters is that:

• The property is used as a rental or investment property.

• You are depreciating the property.

• The home contains components that qualify for accelerated depreciation.

Many older homes contain thousands of dollars of assets that can be depreciated over 5 or 15 years instead of the standard 27.5-year recovery period for residential rental property.

What Parts of an Older Home Can Qualify?

A cost segregation study identifies components that the IRS allows to be depreciated more quickly because they are considered personal property or land improvements rather than part of the building itself.

Examples may include:

• Luxury vinyl plank (LVP), laminate, or carpet flooring

• Kitchen appliances

• Decorative lighting and ceiling fans

• Cabinets and countertops (in certain circumstances)

• Window treatments

• Fencing

• Driveways

• Sidewalks

• Patios

• Landscaping

• Irrigation systems

• Retaining walls

• Exterior lighting

Even if the home was built decades ago, many of these components can still qualify for accelerated depreciation.

What If I Purchased the Property Several Years Ago?

You're not too late.

Many investors assume that if they've already been claiming depreciation, they've missed their opportunity. Fortunately, that's usually not the case.

A look-back cost segregation study allows your CPA to identify depreciation that should have been claimed in prior years. Rather than amending old tax returns, your CPA can often claim those missed deductions by filing IRS Form 3115 (Application for Change in Accounting Method).

This creates a one-time "catch-up" adjustment on your current tax return, allowing you to benefit from depreciation that would otherwise have been spread over many years.

Example

Let's say you purchased a vacation rental in 2021 for $900,000.

At the time, you simply began depreciating the home over 27.5 years.

In 2026, you decide to complete a cost segregation study.

The study identifies qualifying building components and land improvements that can be depreciated over shorter recovery periods. Your CPA files Form 3115 to recognize the accumulated depreciation adjustment, allowing you to claim additional depreciation in the current year rather than waiting years to recover those deductions.

Every property is different, but many investors are surprised by how much additional depreciation can be unlocked through a look-back study.

Which Residential Properties Are the Best Candidates?

While every property is unique, cost segregation studies often provide the greatest benefit for:

• Short-term rentals (Airbnb and VRBO)

• Beach homes

• Lake houses

• Mountain cabins

• Luxury vacation rentals

• Single-family rental homes

• Duplexes

• Triplexes

• Fourplexes

Higher-value homes generally produce larger depreciation benefits because there are more dollars available to allocate among qualifying components.

Should I Wait Until I Remodel?

Not necessarily.

A cost segregation study is based on the property's depreciable basis—not whether you've recently completed renovations.

While renovations can increase future depreciation opportunities, many investors benefit from completing a study before making major improvements. If you renovate later, those new improvements may also qualify for accelerated depreciation.

Is There a Deadline?

As long as you still own the property, it may still qualify for a cost segregation study.

That said, the sooner you complete the study, the sooner you may begin benefiting from increased depreciation deductions and improved cash flow.

Waiting until you sell the property generally means missing years of potential tax savings.

Why Residential Investors Are Choosing Cost Segregation

Many residential real estate investors have substantial equity tied up in their rental properties but overlook one of the most powerful tax strategies available to them.

A properly prepared cost segregation study can:

• Accelerate depreciation deductions

• Improve annual cash flow

• Increase after-tax returns

• Support proactive tax planning

• Help investors keep more of their rental income working for them

For short-term rental owners who materially participate in their rental activity, the tax benefits can be even more impactful because accelerated depreciation may help offset other sources of taxable income, depending on their individual circumstances.

Why Choose 24 Hour Cost Seg?

At 24 Hour Cost Seg, we specialize in residential rental properties. Whether you own one Airbnb or an entire portfolio of rental homes, our streamlined process provides a comprehensive, CPA-ready report in as little as 24 hours for many qualifying properties.

Our reports include:

• IRS-compliant asset classifications

• Detailed depreciation schedules

• CPA-ready documentation

• Photo documentation

• Audit support options

Our goal is simple: help residential real estate investors maximize depreciation deductions without the long turnaround times and high costs traditionally associated with cost segregation studies.

Final Thoughts

Don't assume your rental property is "too old" to benefit from a cost segregation study.

In fact, some of the best opportunities come from residential properties that have been owned for several years. Whether your rental is a beach condo, mountain cabin, lake house, Airbnb, or long-term rental, there may still be significant depreciation available to accelerate.

If you've never had a cost segregation study performed, now is a great time to find out how much your property could save.

Curious What Your Property Qualifies For?

Contact 24 Hour Cost Seg for a complimentary property review. We'll help determine whether your rental property is a good candidate and show you how accelerated depreciation can improve your after-tax returns.