Most houses in South San Jose Hills went up around 1963, a few years after the service area's overall median of 1959. That gap matters more than it sounds. Across the wider Pasadena service territory, the housing stock runs from 1943 up to 2012, with a heavy lean toward pre-1960 construction in the older tracts. South San Jose Hills sits on the newer edge of that older cluster. Doors original to a 1963 build are steel-panel or aluminum-panel units on extension-spring, two-track hardware - not the wood slab doors with side-mounted torsion springs you find in the 1940s-era neighborhoods closer to the shop. With roughly 4,059 households in this pocket, that later-generation hardware is the baseline we plan around, not the exception. A door this age is now pushing sixty years old, which is well past the working life of the springs, rollers, and cables it left the factory with, even if the panels themselves still look presentable from the driveway.