Buy a Cost Segregation Study that Withstands IRS Scrutiny
- Greg Pacioli
- May 8
- 4 min read
Updated: Sep 19
Cost segregation studies are creating quite a buzz in 2025 as a popular tax strategy for property owners looking to speed up their depreciation deductions and boost their cash flow. However, some investors are worried that purchasing and leveraging such a study could raise their chances of getting audited by the IRS.
Let’s take a closer look at how to buy a cost segregation study that minimizes audit risk and aligns with IRS guidelines.

IRS Perspective on Cost Segregation
The IRS sees cost segregation as a valid tax strategy, as long as it's done correctly. In fact, they've put together an Audit Techniques Guide (ATG) that specifically addresses cost segregation studies, detailing the methods and documentation needed to stay compliant. This shows that the IRS doesn't automatically consider cost segregation studies as potential audit triggers.
PDF Download >> Cost Segregation Audit Technique Guide
Best Practices for Purchasing a Cost Segregation Study the IRS Won't Challenge
Engage Qualified Professionals: Collaborate with Certified Cost Segregation Professionals (CCSPs) who possess the necessary experience and credentials.
Adhere to IRS Guidelines: Stick to the methodologies laid out in the IRS ATG to ensure you’re in compliance.
Maintain Comprehensive Documentation: Keep thorough records, including engineering reports, cost breakdowns, and photographs, to back up your asset classifications.
Adopt a Conservative Approach: Steer clear of aggressive asset classifications that can’t be justified, and make sure all your assumptions are reasonable and well-supported.

Factors That May Influence Audit Risk
While a properly conducted cost segregation study does not increase audit risk, certain factors can raise red flags with the IRS:
🚩Improper Methodology:
Using unapproved or aggressive methods for asset classification can raise concerns.
🚩Inadequate Documentation:
Failing to provide detailed reports, including engineering assessments and cost analyses, may lead to questions about the study's validity.
🚩Unqualified Preparers:
Engaging professionals without the necessary expertise in tax law, engineering, and construction can result in errors that increase audit risk.
When choosing a cost seg provider, what’s the #1 factor you look for?
Industry experience & track record
Price & turnaround time
Audit-ready engineering reports
ASCSP certification / credentials
To Sum Up
When done right, the purchase and implementation of a cost segregation study doesn’t raise audit risk. If anything it actually acts as a solid financial shield for property owners. When using certified engineers who adhere to IRS guidelines, you get more than just a tax strategy. You get a well-documented, defensible position supported by in-depth analysis and legal backing.
To make the most of this opportunity, buy from a certified cost segregation professional who knows the ins and outs of real estate taxation. This partnership will ensure that your cost segregation strategy is not only in-line with current tax laws but also flexible enough to adapt to any upcoming regulatory changes.
Frequently Asked Questions
Where to find certified cost segregation companies in the US?
If you're on the hunt for a certified cost segregation company, there are plenty of trustworthy sources to check out. A great place to start is by looking into firms that focus on cost segregation and have a solid reputation for their industry know how, IRS compliance, and a proven track record with clients. It's important to find companies that employ certified professionals (ie. ASCSP accredited engineers) and ensure they provide audit-ready reports. Online directories can help you compare firms and find one that aligns with your specific needs and investment goals.
How much does a cost segregation study cost in the US?
A cost segregation study usually falls between $4,000 and $12,000, but the final cost really hinges on the property's size, type, and complexity. For smaller residential or short-term rental properties, you might find prices starting around $2,000, especially if a site visit isn’t needed. Conversely, larger multifamily or commercial properties typically require a more detailed analysis, which can increase the cost. Several factors play into the pricing, such as the property's size and value, the type of asset (whether it’s residential, commercial, or industrial), the thoroughness of the study, and whether you need IRS audit support included.
How long does a cost segregation study take?
When it comes to a cost segregation study, you can generally expect it to take anywhere from 30 to 60 days to wrap up. The timeline really hinges on how quickly you can provide the necessary information and documents, as well as the size of the property in question. If everything is ready to go and responses come in quickly, you might be looking at around 30 days. On the flip side, if there are delays, it could stretch out to about 60 days.
What are the top-rated cost segregation companies in the US?
Finding the "best" cost segregation company really hinges on what you need. Are you a short-term rental owner in search of something budget-friendly and quick? Or perhaps you're a commercial investor looking for a comprehensive engineering study complete with full audit support? There are plenty of reputable firms across the US that provide certified cost seg studies, all while delivering excellent client service and using proven methods. In the end, it’s all about finding the right match for you. So, take your time to compare credentials, pricing, specialties, and how responsive they are.
Ready to take the next step?
Check out the filters on FindCostSeg.com to search certified cost segregation firms and make a well-informed choice before moving forward with your purchase. With the right expertise and approach, you can enhance your tax savings and improve the financial performance of your real estate investments.
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