Cost Segregation for Short-Term Rentals: An $800,000 STR Example

Residential rental property is generally depreciated over 27.5 years. In plain English, that means the building portion of your purchase is written off in small pieces over a long period of time.

A cost segregation study is an engineering-based analysis that may identify certain components of a property that could qualify for shorter depreciation periods, such as 5, 7 or 15 year classifications, rather than being lumped into the 27.5-year building.

A short-term rental contains many different components: appliances, cabinetry, flooring, certain fixtures, driveways, landscaping, decks and site improvements. Which items qualify, and how they are classified, is determined by qualified cost segregation and tax professionals, not by a lender and not by a blog article.

If a professional cost segregation study hypothetically identified 25% of the $680,000 basis as shorter-life assets, that would equal approximately $170,000 reclassified into shorter depreciation categories.

The 25% and the $170,000 are examples only. Actual results vary substantially by property, condition, finishes, site improvements and documentation, and must be determined by qualified tax and cost segregation professionals.

Under current federal law, certain qualifying property acquired and placed in service after January 19, 2025 may qualify for 100% bonus depreciation. When it applies, bonus depreciation can allow a qualifying portion of an asset’s cost to be deducted much sooner than it otherwise would be.

This does not mean the entire $170,000 in our example automatically qualifies. Only the qualifying portions identified by the cost segregation study may potentially be eligible, depending on asset classification, placed-in-service timing and the taxpayer’s individual circumstances.

Depreciation reduces taxable income. It does not mean an investor receives that amount back as a refund. A $170,000 deduction is not $170,000 in your pocket.

The video walks through this using the same educational example. Actual tax savings depend on the investor’s income, tax bracket, whether the loss can be used at all, and individual circumstances. Two investors buying the identical property can end up with very different results.

Under the IRS passive-activity rules, an activity is not treated as a rental activity when the average period of customer use is seven days or less. That distinction is why short-term rentals are often discussed differently from long-term rentals in tax planning conversations.

Note the word average. This is about the average period of customer use, not a single booking, and individual circumstances must be evaluated by a tax professional using your actual booking records.

The IRS provides multiple tests for material participation. Commonly discussed examples include:

• More than 500 hours of participation during the year
• Participation that constitutes substantially all of the participation in the activity
• More than 100 hours of participation and at least as much participation as any other individual

There are additional tests beyond these examples, and meeting 100 hours alone does not automatically qualify someone. Documentation and the facts of your specific situation matter. This is a CPA conversation.

Many investors focus entirely on how large a deduction a study might produce, then discover later that their ability to use the resulting loss is limited by their income situation, participation, filing status or other activities.

That is why this conversation belongs with your CPA before you purchase, not in April after closing. The financing structure, the entity, the timing of the closing and how you plan to operate the property can all be part of that discussion.

A tax benefit does not fix weak fundamentals. The investment still needs to make financial sense on its own, with realistic revenue assumptions and realistic expenses.

Questions worth answering before you write the offer:

• What is realistic annual revenue?
• What is projected occupancy?
• What is the average nightly rate?
• What are management expenses?
• Property taxes?
• Insurance?
• Utilities?
• Maintenance?
• HOA?
• Reserves?
• Mortgage payment?
• What happens if revenue is 15% to 20% lower than projected?

If you want help pressure-testing the numbers, the STR cap rate calculator and the DSCR calculator are both free and ungated, and the Investor Library covers projected rental income, AirDNA-style revenue estimates and how underwriting may view them.

• Would cost segregation make sense for me?
• Could bonus depreciation apply?
• How would my average guest stay affect my tax treatment?
• Do I meet a material participation test?
• What records should I maintain?
• Would I actually be able to use the resulting loss?
• What happens when I eventually sell the property?
• How could depreciation recapture affect my exit strategy?

Lisa Stepp has spent more than 25 years as a mortgage professional and works with short-term rental and real estate investors on the financing side of these purchases.

Depending on the borrower, the property and the transaction, that can mean evaluating options such as DSCR financing and short-term rental financing, conventional investment financing, second-home financing and other eligible investor programs. If a replacement property is part of a potential like-kind exchange, review the 1031 exchange financing education as well.

Nothing here is a commitment to lend or a promise of qualification, rates, terms or approval. Every file is reviewed on its own merits.