Martens won the competition to design the West Virginia governor's mansion in 1923 and it was completed in 1925. Other commissions followed and Martens designed Homeland, a Colonial-revival residence in
Lewisburg, West Virginia. He also designed several homes in Charleston including a stone house for Mrs. Cyrus W. Hall at Ruffner He also designed churches. He designed the
Charleston Woman’s Club in a French Chateauesque style. He died in Charleston. ==Notable buildings==