His first solo works were completed in Mount Vernon, New York. Bowman went on to construct nine homes in Pelham, New York. Bowman's firm expanded to design homes in Westchester County, including Bronxville, Eastchester, New Rochelle and Scarsdale, and in more distant communities including Long Island, Reading, Pennsylvania, Englewood, New Jersey, Short Hills, New Jersey, Greenwich, Connecticut, and The Plains, Virginia. Many of Bowman's homes, including the Ohrstrom home, were constructed by the firm of Cuzzi Brothers & Singer, also of Mount Vernon, NY.