California Shower Door was founded in 1935 in San Francisco. 

Until 1935, shower doors were manufactured much like windows, interior/exterior doors, store fronts and other building products in the construction industry. The openings were made to fit the product. California Shower Door Company broke tradition by manufacturing a door that fit the finished opening.

In 1938, California Shower Door introduced custom shower doors, panel and door inline,  "daylight 90°", and 135° neo-angle stall showers.

With the advent of World War II, aluminum and metal became scarce, and an all-plastic framed door was manufactured. Because of high wages in the shipyards and the dramatic slowdown in the residential construction industry, California Shower Door also converted to electroplating, providing critical military components to the shipyards. At the end of the war, the company resumed the manufacturing of aluminum shower doors and introduced a double slide unit for both tubs and shower receptors.

In 1988, The Majestic Shower Company was formed as a division of California Shower Door Corporation to manufacture high-end shower enclosures, gaining recognition as innovative leaders in the shower enclosure industry. 

In 2004, the companies were sold to the employees in the form of an Employee Stock Ownership Program (ESOP). California Shower Door Corporation and The Majestic Shower Company were now 100% employee owned and operated, with Thomas J. Nolan serving as President and CEO and Marcos Canizales occupying the role of Vice President. The employees successfully (with record sales for 2004) completed the transition from "employee" to "ownership," while at the same time maintaining and expanding the company's rich history and reputation.

In 2010, California Shower Door expanded its product offerings to include glass guardrails, wind screens, glass counter tops, mirrors and interior/exterior glazing systems. As testament to its history, the company has furthered the design possibilities of each of these product offerings.

Whether with shower doors in 1935, or glass guardrails in 2015, the company remains the industry leader in design, fabrication and installation excellence.