In this article, Professors Doucet and Weaver examine the North American shelter business between 1860 and 1920. Drawing upon the business records of the Hamilton, Ontario, real estate firm of Moore and Davis, they analyze the construction, ownership, and management of the North American shelter staple—the single-family detached dwelling. Since these activities had significant effects on the everyday lives of urban dwellers, they reveal significant social as well as business patterns. Doucet and Weaver conclude that this firm, and by implication the industry as a whole, preferred the prudent and routine to the innovative and daring, suggesting, in contrast to the work of recent scholars, that continuity rather than change typified urban development during these decades.