Pflueger, who started as a working-class draftsman and never went to college, established his imprint on the development of Art Deco in California architecture yet demonstrated facility in many styles including Streamline Moderne, neo-Mayan, Beaux-Arts, Mission Revival, Neoclassical and International. His work as an interior designer resulted in an array of influential interior spaces, including luxurious cocktail lounges such as the Top of the Mark at the Mark Hopkins Hotel, the Patent Leather Bar at the St. Francis Hotel and the Cirque Room at The Fairmont, three of the most successful San Francisco bars in their day.