What is a "taking"?

The notion of a "taking" does not have a consistent meaning, but has been interpreted by the courts in a variety of contexts. The Fifth Amendment to the Constitution says that private property shall not be "taken for public use without just compensation" but this has been interpreted to apply most directly to "eminent domain" situations where the government takes title to the land, and "invasion" of land such as flooding resulting from a dam. By contrast, prior to 1922, regulations for the public welfare were not subject to compensation under the definition of takings, and "nuisance" regulations have long been used to prevent conflicts between land uses such as noise, pollution or unsafe conditions. Moreover, planning and zoning laws have evolved to include broader and more detailed protections for these conflicts. Recent rulings make several key points about the need for compensation: 1) simply denying the most profitable use of land does not constitute a taking, although denying all economic use would constitute a taking; 2) land use regulations must serve a valid public purpose, 3) public access to private property can constitute a taking. For a more detailed discussion of case law in the U.S. and specifically for Oregon, see "Property Rights, Land Stewardship and the Takings Issue" by James Pease.[PDF]
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