Ballot Measure 37 was a citizens' initiative passed in 2004, which requires that government compensate owners whose property value has been diminished by land-use regulations, or else waive the regulations. It followed Oregon Ballot Measure 7 passed in 2000 with similar provissions that had been struct down by the Oregon Supreme Court. Measure 37 represents a major change of course from Oregon's legacy of land use planning, and has generated a great deal of controversy. Passage led to many large land owners filing claims across the state that totaled in the millions of dollars each. The controversy surrounding these claims and the possibility of less controlled growth led lawmakers and other groups to propose changes to the law. Changes would exempt many larger developments from the provisions of Measure 37, while explicitly allowing some of the smaller claims, such as families building up to three houses on a single lot. These changes were turned into Measure 49. In a special election in November 2007, Measure 49 was passed by Oregon voters after one of the most expensive campaigns in the state's history.