West Hollywood's housing stock centers on 1965, which puts it a full six years past the median build year for the wider Pasadena service area. That gap matters more than it sounds. A house built in 1965 almost never has the older wood-panel door on a low-tension spring setup you'd find in a 1948 build. By the mid-60s, builders had shifted to steel sectional doors and factory-installed extension spring systems mounted along the horizontal tracks, not the torsion tube over the header that came standard a few years later.
With roughly 22,479 households in this area, that means a fairly consistent generation of hardware across the neighborhood, not a scattered mix of eras. If your neighbor's door failed a certain way, yours is a decent bet to fail the same way eventually, because the builder likely used the same supplier across a run of houses. That consistency is useful when we're diagnosing a job here versus a block with 40 years of infill and remodels layered on top of each other.