Redwood Estates is a rural unincorporated community along State Route 17 in the coastal Santa Cruz Mountains in Los Gatos, California, United States. The Census Bureau includes it in a census-designated place named Lexington Hills. It lies inside the confines of Santa Clara County. The area is about eight miles from downtown Los Gatos and nine miles from the Santa Cruz County community of Scotts Valley.
Nearby Summit Road is roughly the dividing line between the counties: Santa Cruz County areas being generally west of Summit Rd. The Butano Fault (also known as the Butano Rift Zone), roughly follows Summit Road through the area. The ZIP code for post office boxes in Redwood Estates is 95044, although the city and ZIP code for street delivery is Los Gatos, 95033. Street addresses are usually five digits. The U.S. Geological Survey, National Geographic Names Database, lists the NAD27 coordinates of the community as 37°09′23″N 121°59′08″W / 37.15639°N 121.98556°W. The community is inside area code 408 while communities further west (but outside Redwood Estates) are in the coastal area code 831.