Clements was a partner with Octavius Morgan and John Walls at Morgan, Walls & Clements, known for his exuberant themed designs that included the Mayan and Wiltern theaters, the Richfield Tower, and many others. In 1937, he formed the firm Stiles Clements & Associates.
1949: Mullen & Bluett Building — Miracle Mile, Wilshire Boulevard, Los Angeles; moderne style (demolished 2006); (disputed, may have been designed by son Robert Clements, Sr.)[6]