Cost Segregation for Short-Term Rentals: Picking the Right Provider

Owning a short-term rental (STR) brings plenty of expenses, from furnishing the property to upgrading outdoor spaces. A ranking of cost segregation companies can help owners start researching providers, but choosing the right firm takes more than comparing scores. The potential tax benefit depends on the property, the owner’s circumstances and the quality of the study.

What does cost segregation do for an STR?

A cost segregation study looks at a property’s purchase or construction costs to identify components that might qualify for shorter depreciation periods.

For a furnished vacation rental, these might include certain appliances, furniture, carpeting, dedicated electrical systems and exterior improvements like fencing or paving. Classification depends on each asset’s nature and use. Land itself can’t be depreciated, and structural components don’t automatically qualify for shorter recovery periods.

Residential rental property generally has a 27.5-year recovery period. However, a property rented mostly to short-term guests may not qualify as residential rental property, in which case the building is typically depreciated over 39 years. Ask your tax professional which period applies to your STR. Either way, a study identifies eligible components without changing the recovery period that applies to the building itself. The IRS Cost Segregation Audit Techniques Guide explains the methodology and the importance of supporting documentation.

How bonus depreciation changes the picture

Recent federal tax changes make asset classification especially relevant. The One Big Beautiful Bill Act restored permanent 100% bonus depreciation for qualifying property acquired after January 19, 2025, subject to eligibility requirements.

IRS Notice 2026-11 provides interim guidance on these changes. The AICPA & CIMA overview of IRS Notice 2026-11 explains the updated rules, with further details available in the IRS announcement.

Some shorter-lived assets identified through a study might qualify for bonus depreciation, potentially bringing deductions forward. However, not every component qualifies, and a deduction doesn’t guarantee an immediate refund. Acquisition dates, when assets are placed in service and other tax requirements matter.

Will you be able to use the deductions?

A larger deduction on paper doesn’t always translate into immediate tax savings. Passive activity rules, participation in the rental’s operations and other limitations can affect when losses are usable.

An average customer stay of seven days or less can mean an activity isn’t treated as a rental activity under the usual passive activity rules. Material participation and other requirements are still important. The IRS explains these distinctions in Publication 925.

Before commissioning a study, ask your tax professional whether the likely deductions justify the cost and how they fit your broader tax position. This is especially important if you’ve recently completed major renovations or expect to sell soon.

Use data to compare cost segregation firms

A data-driven look at cost segregation firms provides another starting point for evaluating providers. It summarizes how providers compare, helping owners find questions to ask before requesting quotes.

Treat any published figures as a guide rather than a final price list. Some amounts are estimates, and the scope of work can vary considerably.

Neither a score nor a price table can establish which firm is best for your property. Compare the scope of work, ask what supports projected deductions and discuss the proposed approach with your tax professional.

What to look for in a provider

Every STR has different features, furnishings and improvement costs. Your provider should account for those details rather than rely on a generic estimate.

When comparing firms, look at:

• Relevant experience: Does the provider understand furnished vacation rentals and their typical assets?
• Study methodology: Who conducts the analysis and what engineering expertise or technical review is involved?
• Transparent pricing: Check for extra charges for site visits, revisions, amended returns or IRS assistance.
• Documentation and support: Ask for a sample report showing how assets are classified and calculations supported.
• Turnaround time: Confirm when the report will be ready and whether it fits your tax filing schedule.

A low fee might look attractive, especially for a smaller rental, but the study must suit the property’s complexity and include adequate supporting evidence. Ask how the provider handles properties already in service, including whether a look-back study might be appropriate. The firm should also explain what records are needed and how its findings will be coordinated with your tax preparer.

Questions to ask before signing

Before choosing a firm, get clear answers to these questions:

• What property records, invoices and renovation details are required?
• Who prepares and reviews the final study?
• Are revisions and IRS assistance included in the fee?
• How are projected deductions calculated, and what assumptions affect the estimate?

Written answers make proposals easier to compare and clarify what you’re paying for.

Choose a study that fits your property

Cost segregation might help STR owners accelerate eligible depreciation deductions, but headline estimates aren’t everything. Choose a provider that explains its methods, supports its classifications and sets realistic expectations. Compare the evidence and involve your tax professional before committing.