Costa Mesa doesn't get the freeze-thaw cycling that kills openers in colder climates, but the mild temperate band here brings its own wear pattern: near-constant use of the door without the seasonal rest that slows mechanical fatigue elsewhere. Gears, capacitors, and drive belts here run more total cycles per year than they would in a climate with a hard winter, simply because nobody's door sits idle for months. That adds up faster on a 1960s-70s opener that was already at the end of its expected service life before the newest owner ever touched the remote.
Across the 34 named areas that make up this housing stock, the pattern repeats: houses built in that same narrow band, often still running the opener that came with a garage-door retrofit sometime in the following decades. With household income in this service area running well above the county median, a lot of these homes have had kitchens and bathrooms redone twice over while the opener in the garage got ignored, because nobody thinks about it until it stops.