Boddie-Noell: When Electrical Wiring Stayed With the Building

Does every court accept functional allocation when a building's electrical system serves business equipment? Boddie-Noell Enterprises, Inc. v. United States, 36 Fed. Cl. 722 (1996), shows why the answer is no. The Federal Claims Court took a different approach from both Scott Paper and A.C. Monk when evaluating electrical distribution property. Because electric wiring and lighting fixtures are expressly identified as structural components in Treas. Reg. § 1.48-1(e)(2), the court concluded that no portion of the electrical distribution system was allocable to § 1245 property. The 2025 IRS Cost Segregation Audit Technique Guide also makes an important limitation clear: this alternative approach has not been followed by other courts. For investors, Boddie-Noell is a reminder that strong engineering evidence and the governing legal authority must work together.

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Key Takeaways

• Boddie-Noell treated electrical wiring and lighting fixtures expressly listed in the regulations as structural components.
• The court's approach differed from both Scott Paper's functional allocation method and A.C. Monk's adaptability test.
• Electrical infrastructure serving business equipment does not automatically receive § 1245 treatment under every judicial approach.
• Engineering can establish what a system serves, but those facts still have to be evaluated under the applicable legal framework.
• The ATG states that the Boddie-Noell approach is precedent only for the Federal Claims Court and has not been followed by other courts.
• The same equipment-serving electrical facts can produce different classification conclusions when different legal methodologies are applied.
• A technically supported electrical analysis does not eliminate the need to identify the governing classification authority.

What Did Boddie-Noell Decide About Electrical Property?

Boddie-Noell Enterprises, Inc. v. United States involved multiple property classifications.

The ATG's case-law table identifies suspended ceilings, mansard roof panels, electrical connected to equipment, plumbing connected to equipment, kitchen HVAC, a decorative mirror, and drive-thru window units as § 1250 property in the case.

The electrical result is particularly important because it did not follow the functional allocation approach.

The ATG explains that the Federal Claims Court took the position that because “electric wiring and lighting fixtures” are explicitly identified as structural components in Treas. Reg. § 1.48-1(e)(2), no portion of the electrical distribution system was allocable to § 1245 property.

That reasoning creates a very different starting point.

Under this approach, the express regulatory listing carries substantial weight.

The fact that electrical infrastructure may serve equipment does not automatically overcome its identification as a structural component.

That is why Boddie-Noell belongs in the electrical cost segregation discussion.

It demonstrates that courts have not always used the same methodology to answer the classification question.

How Is Boddie-Noell Different From Scott Paper and A.C. Monk?

The ATG presents three different approaches in sequence.

Scott Paper Co. v. Commissioner used functional allocation.

The Tax Court allocated portions of a paper plant's overall electrical system between § 1245 property and § 1250 property based on the power demand or design load of the end-user machinery and equipment. The ATG describes that end-use power demand as the basis for functional allocation.

A.C. Monk & Co. v. United States took a different approach.

The Fourth Circuit asked whether wiring and other electrical components could be reasonably adapted to more general uses. If they could, they were structural components of the building.

Then Boddie-Noell supplied what the ATG calls a third approach.

Rather than primarily asking where the electricity ultimately went or whether the system was adaptable, the court focused on the fact that electric wiring and lighting fixtures were expressly identified as structural components in the regulations.

These are materially different analytical paths.

Scott Paper asks about end-use demand.

A.C. Monk asks about adaptability.

Boddie-Noell focuses on the express regulatory listing.

That difference is exactly why investors should be careful about treating any one electrical case as a universal rule.

Why Isn't Equipment-Serving Electrical Automatically § 1245 Property?

The phrase “serves equipment” can sound decisive.

It is not always enough by itself.

The ATG's case-law table specifically identifies “electrical connected to equipment” in Boddie-Noell as § 1250 property.

That result is especially useful because it prevents an overly broad classification shortcut.

A property owner might see a conduit, feeder, outlet, or other electrical component connected to business equipment and assume the connection automatically creates § 1245 property.

Boddie-Noell demonstrates that the legal analysis can be more complicated.

The ATG itself warns that there are no bright-line tests for distinguishing § 1245 property from § 1250 property. It says the relevant cases are factually intensive, court opinions sometimes conflict, and an ultimate asset classification generally cannot be based on reading only one case.

That warning applies directly here.

The asset name is not enough.

The equipment connection is not enough.

One favorable case is not enough.

The engineering facts have to be connected to the correct legal methodology.

That is why CostSegRx treats electrical distribution systems in cost segregation as a documented engineering and classification analysis rather than a simple rule that equipment-serving electrical is always short-life property.

What Can Engineering Establish Even When Courts Disagree?

Conflicting legal approaches do not make engineering irrelevant.

They make accurate engineering facts more important.

CostSegRx engineers can determine what actually exists at the property.

They can trace where a feeder originates.

They can determine which panel serves a circuit.

They can identify voltage, conductor size, breaker size, transformer configuration, and routing.

They can document whether an outlet is general purpose or dedicated to specific equipment.

They can identify the equipment served.

They can study electrical one-line diagrams, panel schedules, load calculations, and equipment schedules.

They can determine whether the infrastructure is part of the primary or secondary electrical distribution system or a branch circuit and equipment hook-up.

Those distinctions matter because the current ATG does not treat every piece of electrical infrastructure identically.

For example, its current industry guidance distinguishes general building electrical systems from special electrical connections necessary to and used directly with specific machinery or equipment.

The ATG also states that functional allocation applies only to a building's primary and secondary electrical distribution systems.

That is an important boundary.

An engineer therefore needs to understand not merely that electricity reaches equipment, but which part of the electrical system is being analyzed.

Engineering establishes the physical facts.

The governing authority determines how those facts are classified.

Is Boddie-Noell the Predominant Electrical Methodology Today?

No.

The ATG expressly limits the reach of the case.

Its court-case table states that the Boddie-Noell approach is precedent only for the Federal Claims Court and has not been followed by other courts.

Chapter 8 makes a similar point when discussing Boddie-Noell and A.C. Monk, stating that these alternate approaches have not been followed by other courts.

The broader history moved toward functional allocation.

The Seventh Circuit affirmed functional allocation in Illinois Cereal Mills. The Eleventh Circuit later adopted that reasoning in Morrison and rejected the Monk approach. Following Morrison, the IRS revised its position and stated that it would not challenge the functional allocation approach set forth in Scott Paper for determining the eligibility of building electrical systems as § 38 property.

The current ATG then provides a detailed engineering methodology for functional allocation.

That methodology analyzes qualifying demand loads and proportionally allocates primary and secondary electrical distribution system costs between § 1245 property and § 1250 property.

This does not make Boddie-Noell irrelevant.

It makes the case a useful warning about legal context.

A strong quality cost segregation study should not rely on a classification conclusion without understanding the applicable authority and documenting how the conclusion was reached.

Can the Same Electrical Facts Produce Different Legal Conclusions?

Illustrative example only. Actual classifications, costs, recovery periods, depreciation deductions, and tax results depend on the specific property, jurisdiction, engineering analysis, documentation, applicable authority, and taxpayer circumstances.

Assume a commercial property contains a $600,000 primary and secondary electrical distribution system.

A substantial portion of its electrical demand serves specialized business equipment.

The electrical drawings clearly identify those loads.

The panel schedules support them.

The demand-load analysis is technically sound.

Under the functional allocation methodology described in the current ATG, the engineer would analyze the qualifying demand loads and determine the supported proportion of the primary and secondary electrical distribution system associated with § 1245 property and § 1250 property.

The ATG's own supermarket illustration shows how this process works.

In that example, the ATG calculates that 38.4% of the demand load is associated with § 1245 property and applies that percentage to a $1,000,000 electrical distribution system, producing $384,000 of § 1245 basis and $616,000 of § 1250 basis.

Now consider the Boddie-Noell methodology.

The electrical facts have not changed.

The equipment has not changed.

The feeder sizes have not changed.

The load calculation has not changed.

But the legal approach asks a different question and gives controlling weight to the express regulatory listing of electric wiring and lighting fixtures as structural components.

That can produce a different classification conclusion.

This is the point investors should remember.

A technically accurate engineering analysis establishes what the system is and what it serves.

It does not, by itself, choose the governing legal rule.

What Is the Most Important Lesson From Boddie-Noell?

Boddie-Noell completes an important part of the electrical case-law picture.

Scott Paper developed functional allocation based on end-use demand.

A.C. Monk rejected that approach and focused on adaptability to general uses.

Boddie-Noell took a third approach by focusing on the express regulatory identification of electric wiring and lighting fixtures as structural components.

The cases do not all point in the same direction.

That is precisely why the ATG warns against relying on a single case when classifying property. There are no bright-line tests, the cases are factually intensive, and opinions can conflict.

For CostSegRx engineers, the response is not to weaken the engineering analysis.

It is to make the physical evidence more precise.

Identify the electrical system.

Separate primary and secondary distribution from branch circuits and equipment hook-ups.

Trace the end uses.

Document dedicated connections.

Understand the electrical design.

Calculate demand loads when functional allocation applies.

Then connect those engineering findings to the appropriate authority.

Engineering can establish what an electrical system serves, but classification still depends on the governing legal authority. A technically supportable load analysis does not eliminate the need to understand which legal framework applies.