Frequently Asked Questions

A cost segregation study is an engineering-based analysis that identifies and reclassifies personal property assets and land improvements from real property for tax depreciation purposes. Instead of depreciating an entire building over 27.5 or 39 years, a cost segregation study breaks the property into components that can be depreciated over 5, 7, or 15 years. This accelerates depreciation deductions and reduces your tax liability in the early years of ownership. The study is performed by qualified engineers and tax professionals who physically inspect the property and analyze construction documents.

At AE Tax Advisors, cost segregation studies are priced at $1 per square foot with no hidden fees. For a typical 2,500 square foot rental property, the study would cost $2,500. The investment almost always pays for itself many times over. Most property owners see a return of 10:1 or higher on their study cost, meaning for every dollar spent on the study, they save ten dollars or more in taxes.

Virtually any property used for business or investment purposes can benefit from a cost segregation study. This includes short-term rentals (Airbnb, VRBO), long-term rental properties, commercial office buildings, retail centers, industrial facilities, self-storage facilities, hotels, restaurants, medical offices, warehouses, and apartment complexes. The property must be used in a trade or business or held for the production of income to qualify.

Yes. You do not need to have just purchased the property. Under IRC Section 481(a), you can perform a lookback study on a property you have owned for years and claim all of the missed accelerated depreciation in a single tax year. This is done by filing a Form 3115 (Change in Accounting Method) with your tax return. There is no need to amend prior-year returns, and there is no statute of limitations on claiming this adjustment.

Bonus depreciation allows you to deduct a large percentage of the cost of qualifying assets in the year they are placed in service, rather than spreading the deduction over the asset's recovery period. Under the One Big Beautiful Bill Act (OBBBA), bonus depreciation is permanently set at 100%. When combined with a cost segregation study, bonus depreciation means you can deduct the entire reclassified amount in Year 1, creating substantial tax savings immediately.

A properly prepared cost segregation study does not increase your audit risk. The IRS has published a Cost Segregation Audit Techniques Guide (ATG) that outlines the methodology and documentation standards they expect. Studies prepared in compliance with the ATG are well-supported and defensible. In fact, the IRS acknowledges cost segregation as a legitimate tax planning strategy. The key is working with a qualified firm that produces engineering-based studies rather than estimate-based shortcuts.

Standard depreciation spreads the cost of a building evenly over 27.5 years (residential) or 39 years (nonresidential). A cost segregation study identifies components within the building that qualify for shorter depreciation periods of 5, 7, or 15 years. For example, certain electrical systems, plumbing, flooring, and site improvements can be reclassified. With 100% bonus depreciation, these reclassified components can be fully deducted in Year 1, rather than waiting decades to recover the cost.

At AE Tax Advisors, most studies are completed within a few days of receiving the necessary property information. The process involves reviewing purchase documents, construction records, and property details. For a straightforward residential or commercial property, the turnaround is typically 3 to 5 business days. More complex properties with multiple buildings or extensive renovations may take slightly longer.

While there is no strict minimum, cost segregation studies generally make financial sense for properties with a purchase price or construction cost of $200,000 or more. At lower values, the study cost may represent too large a percentage of the potential savings. However, every situation is different. An investor in a high tax bracket with multiple properties may find value in studying properties at lower price points.

The primary documents needed include the purchase settlement statement (HUD-1 or closing disclosure), the property appraisal, any construction or renovation invoices, architectural drawings or blueprints (if available), and photographs of the property interior and exterior. If these documents are not all available, a qualified firm can work with what you have and supplement with their own engineering analysis during a site inspection or detailed review.

When you sell a property on which you have taken accelerated depreciation, you may be subject to depreciation recapture under IRC Sections 1245 and 1250. Section 1245 property (5-year, 7-year, and 15-year assets) is recaptured as ordinary income, while Section 1250 property (the building structure) is recaptured at a maximum rate of 25%. However, the time value of money typically makes accelerating the deductions worthwhile even with recapture, and strategies like 1031 exchanges can defer recapture entirely.

This depends on your participation level and taxpayer status. If you qualify as a real estate professional (REPS) under IRC Section 469(c)(7) and materially participate in the rental activity, your rental losses are treated as non-passive and can offset W-2 and other active income. Short-term rental owners who materially participate can also use losses to offset W-2 income under the 7-day rule without needing REPS status. Passive investors are generally limited by passive activity loss rules.

Real estate professional status is a tax classification under IRC Section 469(c)(7) that allows rental activities to be treated as non-passive. To qualify, you must spend more than 750 hours per year in real estate trades or businesses and more than half of your total working hours must be in real estate activities. If you or your spouse qualifies, rental losses from cost segregation can be used to offset all types of income, including W-2 wages and business income.

No. Cost segregation can be applied to newly constructed properties, newly purchased properties, properties you have owned for years (through lookback studies), and properties that have undergone significant renovations or improvements. The strategy is equally effective for older properties, and in many cases a lookback study on an existing property produces larger one-time deductions than a study on a new purchase.

Many CPAs are generalists who may not have deep experience with cost segregation. Signs that your depreciation may not be optimized include: your CPA has never mentioned cost segregation, your rental properties are being depreciated on a straight-line basis over 27.5 or 39 years with no component breakout, and your CPA does not ask about property improvements or material participation. A specialized firm like AE Tax Advisors can review your current depreciation schedule and identify missed opportunities.

Under the One Big Beautiful Bill Act (OBBBA), 100% bonus depreciation has been made permanent. Even if future legislation were to modify the bonus depreciation percentage, cost segregation would still provide significant value by reclassifying assets into shorter recovery periods. With or without bonus depreciation, accelerating from a 27.5 or 39 year schedule to 5, 7, or 15 years provides substantial present-value tax savings.