Tesoro at Terramor is set to debut this Saturday CORONA, Calif., Aug. 28, 2023 /PRNewswire/ — Richmond American Homes of California, a subsidiary of M.D.C. Holdings, Inc. (NYSE: MDC), is excited to announce the grand opening of Tesoro at Terramor (RichmondAmerican.com/TesoroAtTerramor)….