Blackacre, Whiteacre, Greenacre, and variations thereof are the
placeholder names of fictitious
estates in land universally used by professors of
law in
common law jurisdictions, particularly in the area of
real property, to discuss the rights of various parties to a piece of land. A typical
law school or
Bar exam question on real property might say:John, owner of a
fee simple in Blackacre conveyed the property "to Michael for life,
remainder to Steven, provided that if any person should consume alcohol on the property before the first born son of Steven turns twenty-one, then the property shall go to Walter in fee simple." Assume that neither Michael, Steven, or Walter is an heir of John, and that John's only heir is his son, Edward. Discuss the ownership interests in Blackacre of John, Michael, Steven, Walter and Edward. Where more than one estate is needed to demonstrate a point — perhaps relating to a dispute over boundaries or
riparian rights — a second estate will usually be called Whiteacre, a third, Greenacre, and a fourth, Brownacre.
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A fictitious piece of land used in numerous legal hypotheticals from times immemorial.