Shainberg v. Commissioner

Where this comes from

In 1959, a shopping center owner in Tennessee built a new property and separated the construction costs into groups. The shell got a 40-year life. Plumbing, wiring, and elevators got a 15-year life. The roof, HVAC, and paving got a 10-year life. Each component depreciated at its own rate.

The IRS argued the whole building should use a single composite life. One number, one schedule, everything together. The case went to the U.S. Tax Court.

What the court decided

The Tax Court sided with the owner. When you can document separate costs for components with genuinely different useful lives, you can depreciate them separately. The IRS's single-composite-life argument failed.

This was the first clear judicial endorsement of the idea that a building is not one thing. It is many things, each wearing out at its own rate. Depreciation should reflect that.

Seven years later, IRS Rev. Rul. 66-111 added an important limit. This component method applied to new construction with documented costs. If you bought a used building for a lump sum, you could not go back and break it into components. For that situation, you needed a qualified appraisal and a different approach.

How it shows up in a study

Shainberg is the origin story of cost segregation. When an engineer separates a building's carpet from its shell, or its specialized wiring from its conduit, that engineer is applying the principle this case established in 1959.

The legal chain that runs from Shainberg through Rev. Rul. 73-410 to Hospital Corp. of America shows that cost segregation is not aggressive or novel. Courts approved the concept over 65 years ago. The modern engineering-based study is the evolved form of the same legal permission.

When this case appears in a report, it is there to establish that lineage. The approach has deep roots.

What it does not mean

Shainberg is a 1959 case, decided under pre-ACRS law with the old useful-life system. ACRS (1981) and then MACRS (1986) replaced the useful-life framework with fixed recovery classes. Modern cost segregation works within MACRS, using different tools and authorities than Shainberg itself.

The case also does not override the Rev. Rul. 66-111 limit for used-building purchases. For acquired property, Rev. Rul. 73-410 and Hospital Corp. of America are the controlling authorities, not Shainberg directly. This case is about lineage and legitimacy, not about the mechanics of a modern MACRS study.