🇺🇸 Made in America·100% U.S.-Based Team · 24+ Years in Cost Segregation
Home / Case Studies / Playbook

Engineered Cost Segregation Case Study

$188K accelerated on a single Delray Beach residential rental property.

Delray Beach, FL

An engineered cost segregation study by the Cost Seg America team. Explore this property’s study results below.

$326,328

Cost Basis

$187,815

Reclassified into Faster Depreciation

58%

Reclassification Rate

A single 27.5-year schedule for the entire building.

Untouched, a $326,328 residential rental property in Delray Beach was headed for the plainest outcome the code offers: one asset, 27.5 years, roughly $12,000 in deductions a year until the schedule finally ran out.

That is the path of least resistance, not the only path. MACRS, the system every depreciation schedule runs through, treats a property as many assets with many lives. The steel and concrete earn the long recovery period. The parking, the finishes, the systems that serve equipment rather than the structure were never meant to.

Which is why the default is so often the expensive choice. It leaves the owner's money on the 27.5-year schedule when a real portion of it could be working today. The total never changes. The timing changes everything.

A rental property is more than its walls.

Residential rental property depreciates over 27.5 years by default, but the building is not a single asset. The finishes, the appliances, and the site work around it carry much shorter tax lives.

The Cost Seg America team analyzed this property the way the two engineering approaches the IRS ranks highest call for: component by component, across the whole property. Not a questionnaire, not a software estimate that runs the address through a template and returns an average. An actual engineering analysis of the structure, the site work, and the systems that a cheaper study never bothers to separate.

What an engineered study looks for in a property like this

  • Interior finishes, flooring, and fixtures throughout the rental.
  • Appliances and cabinetry serving the units.
  • Site work and land improvements: driveways, walkways, landscaping, and site lighting.
  • Dedicated electrical and plumbing serving systems beyond the base structure.

The result: $187,815, roughly 58% of the property's basis, was identified as shorter-life property and moved off the 27.5-year schedule into faster federal depreciation. That is not an estimate or a projection. It is what an engineered analysis documented on this building, to the standard the IRS publishes for its own examiners in the Cost Segregation Audit Techniques Guide.

Deductions are worth more now than later.

A study like this does not conjure deductions out of thin air. Every dollar of that $188K always belonged to the owner. The study simply pulled those deductions forward, out of the distant future and into the present, where each one carries more weight.

The logic is plain. A dollar deducted this year beats a dollar deducted in 2050, because this year's dollar can go back to work, into the next deal, into the business, into anything that earns. Inflation chips away at the far-off deduction; time value rewards the near one. Moving $188K forward is an interest-free head start the code hands out on purpose.

And the timing has rarely been better. Under the One Big Beautiful Bill Act, signed July 4, 2025, 100% bonus depreciation is now permanent for qualifying property placed in service after January 19, 2025. The shorter-life property an engineered study pulls out is exactly what qualifies, so reclassified value like this can land as a first-year deduction instead of leaking out over decades.

What accelerating $188K is worth.

Reclassifying property is only half the story. The other half is what those accelerated deductions are worth once they are working for you now instead of decades from now. The figures below are illustrative, calculated from this study's real reclassified amount using the assumptions shown.

Illustrative first-year federal tax benefit: $69,492. Illustrative 10-year net present value of accelerating: $52,535.

Illustrative only, not a promise of results. First-year benefit assumes the $188K of reclassified property is deducted in year one under 100% bonus depreciation (permanent under the One Big Beautiful Bill Act for qualifying property placed in service after January 19, 2025) at a 37% federal tax rate. Net present value compares taking those deductions now versus the default schedule, discounted at 8% over 10 years. Federal figures only. Your actual benefit depends on your tax situation; your CPA determines what applies to you.

Common questions

Can this still work on a property I have owned for a while?
It can. A look-back study applies to property bought, built, or renovated within the past ten years or so. The mechanism is one form, Form 3115, filed with your normal return, and the depreciation you should already have claimed comes back in a single year as a Section 481(a) catch-up. No amended returns, no reopening the past.

Does claiming this much put a target on the return?
No more than any well-built study. Cost segregation is IRS-documented, with its own examiner manual in Publication 5653, and examinations turn on the strength of the work. Every Cost Seg America study uses the two engineering approaches that manual ranks highest, and the record stands at 125-plus audits, zero losses, zero dollars returned.

And when the building eventually sells?
Depreciation always factors into a sale, cost segregation or not, and your CPA accounts for it in advance. For long-term holders, the benefit of big deductions now generally outweighs the treatment at exit, and a 1031 exchange can defer it entirely. This is a planning conversation, not a reason to hold back.

Should I expect the same 58% on my building?
Not automatically. The reclassified share reflects how the property was built and fitted and how much surrounds it outside, so the numbers move a lot from one building to the next. An engineered analysis settles it, and a free proposal will estimate yours before any commitment.

An engineered cost segregation study on a Delray Beach, FL residential rental property reclassified $187,815 (58%) of a $326,328 basis into faster federal depreciation. Engineered, not estimated, by the Cost Seg America team.

Property details

1,304 SF

Building Size

What could your property deliver?

A free proposal takes 24 hours and costs nothing. Discover what a study could mean for your specific property.

Get Your Free Proposal →

1-888-365-5023 · info@costsegamerica.com

← Back to all case studies