Google treats Los Angeles as a cluster of markets. A search from Santa Monica returns different businesses than one from Glendale or Irvine, and the map results at the top decide most local calls.
Neighborhood names carry weight: Silver Lake, Sherman Oaks, Culver City, Brentwood, Highland Park and dozens more show up in how people phrase a search. Housing matters too. Rent-controlled apartments, hillside homes and Orange County planned communities each produce different service searches.
Zillow, Realtor.com and Redfin own the listing searches, so smaller firms win on service and owner-side searches. Many trades show a CSLB number and many brokers a DRE number, and those belong on the page as proof.
SEO here builds slowly, over months, and depends on your business details being the same everywhere they appear online.