Interlaken's housing stock centers on 1970, a few years ahead of the broader Gilroy service area's 1976 median. That gap matters more than it sounds. Doors and openers installed in the early 1970s often predate the torsion-spring conversions and safety reversal mechanisms that became standard by the late 70s and into the 80s. With 2,091 households here, this is a small, tight pocket of similar-vintage construction rather than a spread of newer infill. If your neighbor's door failed last year, there's a decent chance yours is built the same way and due for the same failure. We see a cluster of original steel sectional doors still riding on the hardware they shipped with, which is unusual once you get into areas built even five or ten years later.