Santa Monica packs an unusual amount of commercial density into eight square miles, and it is split into corridors that behave like separate towns. Montana Avenue, the Third Street Promenade, Main Street and the Wilshire corridor each have their own customer, their own price expectation and their own competitive set.
That density changes the SEO problem. A business here rarely wins by ranking for one broad term citywide. It wins by being unmistakably the closest credible option for the corridor its customers are actually standing in when they search.
The other Santa Monica factor is a customer base that researches. People here compare three or four options, read reviews properly, and pick the business whose page answered the specific question they had — what it costs, how long it takes, who does the work.