Most houses in Cerritos went up around 1974, which runs six years newer than the 1968 median across our whole service area. That gap matters more than it sounds. A door and opener installed in 1974 is now pushing fifty years of cycling, and in a huge share of Cerritos homes, nobody has ever swapped the torsion spring, the lift cables, or the original steel track. Owners replace a broken remote or a dead wall switch and assume the rest of the system got attention too. It usually didn't. The spring that lifts your door today is very likely the same one the builder's crew tensioned the week the house was framed, and steel fatigues whether or not it ever rusts. With 15,763 households in Cerritos, that's a lot of fifty-year-old torsion hardware still doing daily work it was never meant to do for this long.