Corwin H. Van Epp Jr., 58, a building contractor and estimator with several area construction and architectural firms for almost 30 years before he retired earlier this year, died of a heart ailment Aug. 9 at Fairfax Hospital. He lived in Annandale.

Mr. Van Epp was a native of Boynton Beach, Fla. He served with the Navy in the Atlantic during World War II. He was a navigator with the Merchant Marine in Korea during the conflict there.

He moved to Washington in the mid 1950s. He was the owner and operator of the Van Epp Construction Co. in Bethesda from 1969 until 1973. He retired as chief estimator from the VVKR architectural firm in Alexandria.

Mr. Van Epp was a member of Associated Builders & Contractors Inc. and the American Institute of Contractors. He was a member of the board of trustees of the Lewinsville Presbyterian Church in McLean.

Survivors include his wife, F. Jane Van Epp of Annandale; three sons, Timothy D., of McLean, Daniel C., of Blacksburg, Va., and Robert M., of Annandale; his father and stepmother, Corwin H. and Gloria Van Epp, and a sister, Celeste Hooper, all of Falls Church; two brothers, Owen, of Florida, and Marvin, of California, and three grandchildren.