Expert Testimony and Valuation Standards

In Khoobehi Properties v. Baronne Development, the Louisiana Court of Appeal affirmed the trial court's decision to allow expert testimony despite challenges to methodology. The case demonstrates that while experts must use reliable methods, they have flexibility in their approach, and credibility determinations rest with the jury.

When business valuation disputes end up in court, the role of expert testimony becomes paramount. A recent case from Louisiana's 5th Circuit Court of Appeal provides valuable insights into how courts evaluate expert methodology and what standards valuation professionals must meet when their work faces legal scrutiny.

The case involved a commercial real estate dispute where damages needed to be calculated. The defendants challenged the plaintiff's damages expert, arguing her methodology was unreliable and should be excluded from testimony. The trial court disagreed, allowing the expert to testify, and the appellate court affirmed that decision.

The Reliability Standard for Expert Testimony

Courts use established standards to determine whether expert testimony should be admitted. The expert must be qualified by knowledge, skill, experience, training, or education. More importantly, their testimony must be based on sufficient facts or data, be the product of reliable principles and methods, and the expert must have reliably applied those principles to the facts of the case.

In this case, the plaintiff's expert, Jacqueline Tuthill, held credentials as a CPA, CFE, and CFF. She calculated damages using financial data and industry standards. The defendants argued her methodology was flawed because she relied on certain assumptions and didn't follow what they considered the "proper" approach.

However, the court emphasized that experts are allowed considerable latitude in their methodology. The key question is not whether the expert used the best method or the method preferred by opposing counsel, but whether the methodology is reliable and properly applied. As the court noted, it would be up to the jury to determine the credibility of the expert's opinions, not for the judge to exclude the testimony at the outset.

Flexibility in Valuation Approaches

One of the most significant takeaways from this decision is the flexibility courts allow in valuation methodologies. Business valuation is not a precise science with a single correct answer. Different approaches, assumptions, and data sources can all lead to defensible conclusions.

This flexibility exists because business valuations inherently involve judgment calls. Market conditions, company-specific factors, economic forecasts, and industry trends all require professional interpretation. What matters is that the valuation professional can explain and defend their choices with sound reasoning and appropriate data.

The court's decision reinforces that challenges to an expert's methodology typically go to the weight of the evidence, not its admissibility. If an opposing party disagrees with an expert's approach, they can cross-examine the expert, present their own expert with different conclusions, and argue to the jury why one methodology is more persuasive than another. But the court will not exclude expert testimony simply because the methodology is debatable or could have been done differently.

Practical Implications for Valuation Professionals

For valuation professionals, this case offers several important lessons. First, credentials matter. The expert in this case held multiple relevant certifications, which strengthened her position when defending her methodology. Maintaining professional credentials and staying current with industry standards provides a foundation for credibility.

Second, documentation is critical. When your work might be scrutinized in a legal proceeding, you need to be able to explain every step of your analysis. What data did you use? Why did you choose one approach over another? What assumptions did you make, and why were they reasonable? Clear documentation makes it much easier to defend your work under cross-examination.

Third, understand that flexibility in methodology does not mean anything goes. Your approach must still be grounded in accepted principles, supported by adequate data, and consistently applied. The fact that courts allow different methodologies does not excuse sloppy work or unsupported conclusions.

Finally, remember that even if your testimony is admitted, you will still face rigorous cross-examination. Opposing counsel will challenge your assumptions, question your data sources, and present alternative interpretations. Being prepared to defend your work under pressure is just as important as producing quality analysis in the first place.

Key Takeaways

•       Courts allow considerable flexibility in valuation methodology as long as the approach is reliable and properly applied. Disagreements about methodology typically affect the weight of evidence, not admissibility.

•       Professional credentials and clear documentation strengthen an expert's position when facing methodology challenges. Maintaining certifications and thoroughly documenting analytical choices provides critical defensibility.

•       The jury determines expert credibility, not the judge. Valuation professionals should prepare for rigorous cross-examination and be ready to defend their assumptions, data sources, and conclusions under scrutiny.

•       Business valuation involves inherent judgment and interpretation. Different approaches can lead to defensible conclusions as long as they are grounded in accepted principles and supported by adequate data.

Conclusion

The Khoobehi Properties case provides reassurance that courts understand the professional judgment inherent in business valuation work. While standards and reliability matter, valuation professionals have the flexibility to exercise their expertise and make informed choices about methodology. For business owners involved in disputes requiring valuation, this means engaging qualified professionals who can not only produce quality analysis but also defend their work in court. The expert's role extends beyond calculation to include persuasive testimony that can withstand legal challenges.

Source: BVLaw, August 2025