George A. Zahn, 62, the president of the Zahn Construction Co. Inc. and a Washington area builder for more than 35 years, died at his home in Silver Spring Sunday after an apparent heart attack.

Mr. Zahn was born in Worthing, S.D. He came to Washington in 1936 and two years later became president of a construction firm. Except for World War II service in Navy, he held that position until 1949, when he went into business for himself. From 1949 until 1963 he specialized in putting up custom-built houses. Then he formed Zahn Construction and operated it until his death.

Mr. Zahn was a member of St. Bernadette's Catholic Church in Silver Spring and a member of its ushers committee. He also was a member of the Holy Name Society, the Rosensteel Council of the Knights of Columbus and the Cardinal O'Boyle 4th Degree Council of the Knights of Columbus. He was a former national director of the Ancient Order of Hibernians and a past-president of the District Board of the AOH. At the time of his death he was president of Division 2 of the AOH. He was a trustee of the D.C. Department of the Catholic War Veterans.

Survivors include his wife, Margaret, of the home in Silver Spring; Six children, the Rev. George E., of Norfolk; Agnes Furilla, of Brookeville; Denis B., of Wheaton; Daniel E. and John W., of Silver Spring, and Thomas M., of the home; a sister, Mrs. Margaret Horstman, of Worthlington, Minn.; a brother, Bernard of Worthing, S. D., and three grandchilden.