Hewitt commissioned the esteemed architectural firm Lansing and Beierl, to design his mansion on Lafayette Ave.
The resulting mansion is an eclectic masterpiece featuring Stick ornamentation, Arts & Crafts style siding, a Richardsonian Romanesque porch, and Queen Anne style stained glass adorned with the faces of Greek gods.
Beyond its aesthetic allure, the mansion was a beacon of technological innovation. It featured dual lighting fixtures that combined the nascent technology of electricity with the reliability of gas, ensuring illumination even during power failures—a common occurrence at the time. The home also boasted a central heating system with nine thermostats, a groundbreaking feature that underscored Hewitt's commitment to comfort and cutting-edge technology. These advancements positioned the mansion as one of the most sophisticated homes in Buffalo, if not the entire country, at the turn of the century.