Start with the number that actually matters: median household income in Cerritos runs $133,953, well above the $104,565 median across the wider service area. That gap changes the math on a damaged panel. At this income level, most owners we'd expect to hear from aren't stretching a repair to save a hundred dollars - they're deciding whether to patch one dented section or replace the whole door while they're at it, and the answer tips toward replacement more often than it would in a lower-income tract.
The housing age sets up the problem in the first place. Cerritos's housing stock centers on 1974, which lines up with the broader pattern across this part of the service area - most garage doors went in during the 1960s and 70s, on hardware and panel dimensions that have shifted since. A door built in '74 is pushing fifty years old. Steel fatigues, wood composite panels delaminate at the bottom where water sits, and aluminum trim on the cheaper original doors pits and bends. None of that is damage from one bad day - it's five decades of thermal cycling and small hits adding up. With roughly 15,763 households in Cerritos, that's a lot of garages built in the same narrow window, aging out at roughly the same time.