According to the U.S. bureau of labor and statistics, changes in producer price indexes in basic building materials are mixed. Softwood lumber, used primarily for homebuilding, is down 13.6% since March, and down 2.4% since March 2019. Iron and steel is down 14.2% since March and down 3.6% since March 2019. Ready mixed concrete is up 0.4% since March and up 5% since March 2019.
Source: U.S. Bureau of Labor and Statistics.