# MBE Constitutional Law Takings: Regulatory vs Physical Trap

Canonical: https://www.barprepplay.com/mbe/constitutional-law/takings-regulatory-vs-physical/
Subject: Constitutional Law
Byline: BarPrepPlay
Last reviewed: April 21, 2026

## Fact pattern

The City of Brookhaven enacts the Coastal Resilience Ordinance to address rising sea levels. Section 1 requires every homeowner on three named coastal blocks to allow the city to install a 3-by-3-inch storm-monitoring sensor on any roof exceeding 30 feet in elevation. The sensor is bolted on permanently. Section 2 prohibits any new vertical construction on lots within 100 feet of the high-tide line. Owen owns a 35-foot beachfront cottage on a covered block; the city installed a sensor on his roof in March without payment or notice. Quentin owns an empty waterfront lot purchased in 2018 for $400,000 with permits in hand to build a four-story rental; under the new Section 2 he can build nothing taller than the existing grade. Both sue the city for an uncompensated taking under the Fifth Amendment.

## Quick answer

Owen receives just compensation under Loretto's per se physical-occupation rule. Quentin proceeds under Penn Central balancing, not Lucas, because he retains some residual economic value in the lot. The Fifth Amendment Takings Clause, applied to the states through the Fourteenth Amendment, requires just compensation for property taken for public use. Two distinct per se categories trigger automatic compensation. First, any permanent physical occupation by the government, however small, is a per se taking under Loretto v. Teleprompter — the rule does not depend on the size of the intrusion or the economic impact. Second, a regulation that denies an owner ALL economically beneficial use of property is a per se taking under Lucas v. South Carolina Coastal Council. Other regulatory limits that do not entirely destroy economic value are evaluated under the Penn Central balancing framework: (i) economic impact on the owner, (ii) interference with reasonable investment-backed expectations, and (iii) the character of the government action.

## Issue

Is the rooftop sensor installation on Owen's house a per se physical taking, and does the height ban on Quentin's lot constitute a per se total regulatory taking under Lucas or only a Penn Central partial regulatory taking?

## Rule

The Fifth Amendment Takings Clause, applied to the states through the Fourteenth Amendment, requires just compensation for property taken for public use. Two distinct per se categories trigger automatic compensation. First, any permanent physical occupation by the government, however small, is a per se taking under Loretto v. Teleprompter — the rule does not depend on the size of the intrusion or the economic impact. Second, a regulation that denies an owner ALL economically beneficial use of property is a per se taking under Lucas v. South Carolina Coastal Council. Other regulatory limits that do not entirely destroy economic value are evaluated under the Penn Central balancing framework: (i) economic impact on the owner, (ii) interference with reasonable investment-backed expectations, and (iii) the character of the government action.

## Application

Owen's claim falls within Loretto. The sensor is a permanent, government-mandated physical occupation, regardless of its small footprint. Loretto rejected size-based exceptions when it required compensation for a 1.5-cubic-foot cable box. The threshold question is physical vs regulatory; once an actual occupation exists, no balancing is needed. Owen is entitled to just compensation.

Quentin's claim is harder. The Section 2 height ban is a regulation, not an occupation. To trigger Lucas per se, the regulation must wipe out ALL economic value. Quentin still owns the lot; he can hold it, sell it to a buyer who values bare coastal land, use it recreationally, and rebuild if the rule is later relaxed. Some residual value remains, so Lucas does not apply. The analysis falls back on Penn Central. Quentin's investment-backed expectations are crushed — he bought the lot to build a four-story rental and now can build nothing — and the economic impact is severe. Yet the character of the government action is a generally applicable, science-based public-safety response to a documented coastal hazard, which weighs heavily for the city. Whether Quentin prevails turns on how a court balances those factors; the most likely outcome is a substantial Penn Central partial regulatory taking, but it is not a per se Lucas claim.

## Conclusion

Owen receives just compensation under Loretto's per se physical-occupation rule. Quentin proceeds under Penn Central balancing, not Lucas, because he retains some residual economic value in the lot.

## Numbered reasoning steps

1. Categorize the government action as physical occupation or regulation at the threshold.
2. For physical occupation, apply Loretto — any permanent occupation requires compensation regardless of size.
3. For regulation, ask whether ALL economically beneficial use is denied. If yes, apply Lucas per se.
4. If economic value remains, apply Penn Central's three-factor balance.
5. Resolve each property and each provision separately; do not roll multiple owners or rules into one analysis.

## Why wrong answers fail

- The sensor is too small to count as a taking; only substantial occupations require compensation.: Loretto rejected size-based exceptions. A permanent occupation, however small, is a per se taking — the cable box in Loretto itself was tiny.
- The height restriction is a per se Lucas taking because it bars construction.: Lucas requires denial of ALL economically beneficial use. Quentin retains the lot's value as land; Lucas does not apply.
- Quentin must wait for an as-applied agency decision before suing; his claim is unripe.: A facially applicable regulation supports a takings challenge without further administrative proceedings on the legal classification question.
- The Takings Clause applies only to formal eminent-domain proceedings, not to land-use rules.: The Supreme Court has long applied takings principles to both physical and regulatory takings under Pennsylvania Coal, Penn Central, Lucas, and their progeny.

## Issue-spotting checklist

- Categorize physical vs regulatory at the threshold — that controls the entire analysis.
- Apply Loretto for any permanent physical occupation, no matter how small.
- Apply Lucas only when ALL economic value is destroyed — watch for residual uses.
- For partial regulatory limits, run Penn Central's three factors explicitly.
- Watch for "total wipeout" claims that actually leave residual value behind.

## Primary law and source anchors

- **U.S. Const. amend. V (Takings Clause)**: Private property shall not be taken for public use without just compensation.
- **Loretto v. Teleprompter Manhattan CATV Corp., 458 U.S. 419 (1982)**: Permanent physical occupation by the government, however minor, is a per se taking.
- **Lucas v. South Carolina Coastal Council, 505 U.S. 1003 (1992)**: A regulation denying all economically beneficial use of property is a per se taking unless background nuisance principles already barred the use.
- **Penn Central Transp. Co. v. New York City, 438 U.S. 104 (1978)**: Three-factor balancing for partial regulatory takings: economic impact, investment-backed expectations, character of the government action.

## 3-question quiz teaser

1. When the government permanently occupies private property, what is the proper takings analysis?
  - Rational basis review
  - Penn Central balancing
  - Per se taking under Loretto
  - Strict scrutiny under the Fourteenth Amendment
2. Lucas v. South Carolina Coastal Council recognized a per se regulatory taking when:
  - The regulation reduces property value by more than 50 percent
  - The regulation denies ALL economically beneficial use of the property
  - The regulation interferes with the owner's investment-backed expectations
  - The regulation is enacted to protect coastal areas
3. Which factor is NOT part of Penn Central balancing?
  - Economic impact on the owner
  - Interference with investment-backed expectations
  - Character of the government action
  - The property's prior chain of title

## Related pages

- [MBE Constitutional Law Commerce Clause Example Essay](https://www.barprepplay.com/mbe/constitutional-law/commerce-clause-local-manufacturing/)
- [MBE Real Property Adverse Possession Sample Essay](https://www.barprepplay.com/mbe/real-property/adverse-possession-coastal-lot/)

## Gated app actions

- [Take the 3-question quiz](https://www.barprepplay.com/?seo_slug=takings-regulatory-vs-physical&seo_action=quiz)
- [Open a related Constitutional Law drill](https://www.barprepplay.com/?seo_slug=takings-regulatory-vs-physical&seo_action=drill)
- [Found an issue?](https://www.barprepplay.com/?seo_slug=takings-regulatory-vs-physical&seo_action=report)