Multiple U.S. studies show no precedent of land-based wind farms affecting real estate values. After studying 7,500 single-family property sales between 1996 and 2007, Lawrence Berkeley National Laboratory found that the view of wind facilities and the proximity of homes to wind turbines have no consistent, measurable, or statistically significant effect on home sale prices. A 2006 Bard College study on a Madison, N.Y. onshore wind farm also found no evidence that wind turbines affected home values. In 2003, the Renewable Energy Policy Project studied 24,000 home sales surrounding 11 U.S. onshore wind farms, and found no evidence of adverse effects on property values. In some communities, the homes near the turbines increased in value faster than the control group.