The L. Richardson Preyer Federal Building is a courthouse of the United States District Court for the Middle District of North Carolina in Greensboro, Guilford County, North Carolina. It was completed in 1933, and was renamed in honor of United States Representative and District Court judge L. Richardson Preyer in 1988. It is located at 324 West Market Street.It was listed on the National Register of Historic Places in 2014.SignificanceBuilt pursuant to the Public Buildings Act of 1926, the Preyer Building was designed by the Washington architectural firm of Murphy and Olmstead with James A. Wetmore, Acting Supervising Architect of the U.S. Treasury Department, as Supervising Architect. The George H. Rommel Construction Company of Louisville, Kentucky, acted as General Contractor.The Greensboro building was built as a Post Office, Courthouse and Federal Building. The people of Greensboro had anxiously awaited construction of a new, badly needed facility. Construction was begun in December 1931, and when the building was dedicated on July 6, 1933, more than 5000 people attended the dedication ceremony. After the postal service moved out completely in the late 1980s, the entire first floor work space was converted to courts and related offices. As of 2010, the building serves primarily as a courthouse for the Middle District of North Carolina.