Movable Partitions vs. Interior Walls: The ATG’s Removal Test

Does a non-load-bearing wall qualify as personal property simply because it could theoretically be removed? The 2025 IRS Cost Segregation Audit Technique Guide draws a much more practical distinction between permanent interior walls and genuinely movable partitions. Ordinary interior partitions that divide rooms or provide traffic control can remain § 1250 property even when they carry no structural load. Movable partitions can receive § 1245 treatment when they can actually be removed while remaining substantially intact, or when they are designed to be moved and reused, stored, or sold in their entirety. For CostSegRx engineers, the key question is not whether a partition is technically removable, but what physically happens when it comes out.

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Key Takeaways

• The ATG treats load-bearing walls and many ordinary non-load-bearing partitions as § 1250 building components.
• A movable partition can qualify as § 1245 property when it can be readily removed substantially intact or moved and reused, stored, or sold in its entirety.
• Non-load-bearing does not automatically mean movable personal property because removal characteristics and independent reuse matter.
• Engineers can examine attachment methods, finishes, ceiling and floor connections, removal damage, modular construction, and prior relocation history.
• Restroom partitions and other items called partitions do not automatically receive movable-partition treatment because the ATG classifies some of them as building components.
• Two visually similar partitions can require different treatment when one can be relocated intact and the other must be demolished during removal.
• The most useful partition test asks whether the installed assembly can realistically leave the building and retain independent usefulness afterward.

What Does the ATG Treat as an Interior Wall?

The ATG's industry matrices generally include all load-bearing interior partitions within § 1250 property.

That result is intuitive.

A load-bearing wall is part of the building structure.

But the ATG does not stop there.

It also includes many non-load-bearing partitions within the building category.

For retail and restaurant properties, the ATG describes § 1250 interior partitions as non-load-bearing partitions, regardless of height, that divide or create rooms or provide traffic control. These can include studs, sheetrock, rough carpentry, plaster, drywall, gypsum board, and other finishes.

The auto-manufacturing guidance adds another useful physical description.

There, § 1250 non-load-bearing partitions include partitions that cannot readily be removed and incur damage upon removal. The examples include drywall, gypsum board, concrete block, glass, metal, and related finishes.

For nonresidential buildings, supported permanent interior partitions are generally 39-year nonresidential real property.

For qualifying residential rental property, comparable permanent interior walls generally follow 27.5-year residential rental property treatment.

So the key distinction is not:

Load-bearing versus non-load-bearing.

The more useful distinction is:

Permanent building partition versus genuinely movable property.

What Makes a Partition Movable Under the ATG?

The ATG provides unusually concrete language.

In multiple industry matrices, qualifying movable interior partitions are described as partitions that can satisfy one of two conditions.

The first is that the partition can be readily removed and remain in substantially the same condition after removal as before.

The second is that the partition can be moved and reused, stored, or sold in its entirety.

That is a practical removal test.

Imagine a modular wall panel system designed to be disassembled from tracks, relocated across a property, and reconstructed in a new configuration.

That can present strong movable-partition facts.

Now compare it with a conventional stud-and-drywall wall.

The drywall may be screwed to framing.

The framing may technically be detachable.

But actual removal may require demolition of gypsum board, joint compound, trim, fasteners, insulation, electrical devices, and finishes.

The pieces may not leave the building in substantially the same condition.

They may have little independent reuse value afterward.

Both walls are theoretically removable.

Only one may satisfy the ATG's movable-partition description.

This is why the broader CostSegRx principle in What Makes an Asset § 1245 Property? is useful here.

Classification follows the actual property facts rather than the construction label.

Why Doesn't Non-Load-Bearing Mean Personal Property?

Because structural load is only one characteristic of an interior partition.

Many permanent building walls do not carry the building's structural loads.

They still create rooms.

They establish corridors.

They provide privacy.

They control traffic.

They define permanent building layouts.

And they can be constructed in a way that makes removal destructive rather than relocatable.

The ATG expressly includes these types of non-load-bearing walls in § 1250 property.

That prevents a common shortcut:

“This wall is not structural, so it must be personal property.”

The term “structural component” for depreciation purposes is broader than structural engineering's narrow concept of a load-bearing element.

This is similar to the roof issue discussed in Roof or Decorative Feature? The ATG’s Integration Test.

A roof component can be part of the building even when it does not carry structural loads.

An interior partition can likewise remain a building component even when it is not load-bearing.

For a partition, the ATG gives us a better physical question:

Can it actually be removed and retain its identity and usefulness as a partition?

How Do Engineers Test Whether a Partition Is Truly Movable?

CostSegRx engineers can examine the entire installed assembly.

Start with the attachment.

How does the partition connect to the floor?

Does it use permanent anchors or a reusable track?

How does it connect to the ceiling?

Does it terminate at a suspended ceiling, penetrate above it, or attach to structural framing?

What happens at adjoining walls?

Then examine the finishes.

Is the partition made from reusable factory-manufactured panels?

Or is it framed, taped, mudded, painted, and finished like ordinary permanent construction?

Are baseboards or trim permanently attached?

Would they have to be destroyed during removal?

Electrical systems can also affect the analysis.

Are receptacles, switches, data connections, or wiring incorporated into the wall?

Can those connections be disconnected without substantial demolition?

The engineer can also look for evidence of actual reuse.

Has the partition previously been relocated?

Is it part of a modular system designed for recurring layout changes?

Does the owner maintain spare panels?

Are components cataloged and stored for reuse?

Would a removed partition have independent value to another buyer?

Those facts are stronger than simply saying:

“The wall can be unscrewed.”

The ATG's quality-study guidance supports this property-specific investigation. It emphasizes construction expertise, site visits, appropriate documentation, drawings, specifications, and clear identification of § 1245 property.

This is also why CostSegRx emphasizes engineering site analysis rather than classifying property exclusively from fixed asset descriptions.

Are All Items Called “Partitions” Movable Property?

No.

The word itself does not establish classification.

A useful example is restroom partitions.

A standard manufactured toilet partition can look removable.

It may be constructed from metal, plastic, phenolic material, or similar panel products.

Yet the auto-manufacturing matrix specifically identifies shop-made and standard manufactured restroom partitions as § 1250 property and 39-year nonresidential real property.

That is an important reminder for an ATG-based classification system.

Do not create a rule that says:

“Partition equals movable partition.”

Instead, identify what type of partition the ATG or applicable authority is discussing.

Likewise, the recovery period for qualifying movable partitions can vary by the industry and applicable asset class.

Retail, restaurant, auto dealership, and residential rental matrices provide examples of qualifying movable partitions classified as § 1245 property under Asset Class 57.0, which is 5-year property.

The auto-manufacturing matrix identifies qualifying movable partitions as § 1245 property under Asset Class 37.11, Manufacture of Motor Vehicles, which is 7-year property.

So the correct sequence is:

First determine whether the partition qualifies as § 1245 property.

Then determine the applicable asset class.

Then determine the correct recovery period.

Do not assume every qualifying movable partition is automatically 5-year property.

Can Two Non-Load-Bearing Walls Have Different Recovery Periods?

Illustrative example only. Actual classifications, attachment details, asset classes, costs, recovery periods, depreciation deductions, and tax results depend on the specific property, engineering analysis, industry guidance, documentation, and taxpayer circumstances.

Assume a retail property contains two groups of non-load-bearing partitions.

Each group has a supported installed cost of $250,000.

Partition System A is conventional construction.

Metal studs are anchored to the floor and overhead structure.

Gypsum board is screwed to both sides.

The joints are taped and finished.

The walls are painted and include permanently applied trim.

Electrical receptacles and wiring are installed within the wall cavities.

Removing the partitions requires demolition of the wallboard and finishes, and the removed assembly cannot realistically be stored or reused in its entirety.

Partition System B uses a factory-manufactured modular wall system.

The panels fit into reusable tracks.

Electrical connections are designed for disconnection.

Individual panels can be removed without significant damage.

The owner has previously relocated the system as tenant layouts changed.

Panels can be stored and reused in new configurations.

Both systems are non-load-bearing.

That fact does not make them equivalent.

System A presents the characteristics of an ordinary permanent interior partition and can remain § 1250 property and 39-year nonresidential real property.

System B presents the specific removal and reuse characteristics the ATG identifies for movable § 1245 partitions.

In applicable retail guidance, qualifying movable partitions fall under Asset Class 57.0 as 5-year property.

The $250,000 cost did not determine the result.

The non-load-bearing status did not determine the result.

The physical behavior of the installed partition during removal did.

What Is the Most Important Test for a Movable Partition?

Do not start with:

Is the wall non-load-bearing?

And do not stop with:

Can someone technically dismantle it?

Instead ask:

What remains after the partition is removed?

Can the partition come out substantially intact?

Can it be moved somewhere else?

Can it be reused?

Can it be stored?

Could it be sold as a functioning partition system?

Or does removal mean demolition, damaged finishes, discarded drywall, cut framing, and substantial reconstruction before the property can serve as a wall again?

Those questions get much closer to the ATG's distinction.

Then investigate the physical facts.

Review the partition details.

Inspect the floor and ceiling attachments.

Document electrical and data connections.

Examine finishes.

Determine whether removal damages the system.

Look for evidence of prior relocation.

Identify whether the property has independent utility after removal.

And then apply the appropriate industry and asset-class guidance.

For CostSegRx engineers, a movable partition should be movable in more than theory.

Do not classify an interior partition simply because it is non-load-bearing or looks temporary. Engineers determine how it is attached, what happens during removal, whether it remains substantially intact, and whether it can realistically be moved, reused, stored, or sold.