While there are many neighborhoods with homes which qualify as historic, such as Glenridge, just five of these areas have the historic district designation: Almond Grove, University or Edelen, Fairview Plaza, the Broadway area, and Downtown.
The Town of Los Gatos has a wealth of information on the districts designated as historic and what qualifies them as such. For more information, have a look:
http://losgatosca.gov/1999/Historic-Districts
The 5 Official Town of Los Gatos Historic Districts
