San Mateo sits in the same mild temperate band as the rest of the area we cover, which is actually part of the problem. There's no hard freeze to crack a panel, no brutal summer to bake a seal, so a lot of original hardware just keeps working in a degraded state instead of failing outright and forcing a repair. Across the roughly 39,760 households here, most of the housing stock lines up with the broader pattern we see in homes built between 1947 and 1987 - doors and openers that were adequate for their decade and have simply never been revisited. Mild weather means slow failure instead of sudden failure. A spring in a harsher climate might snap in year 15; here it can limp along for 40, getting weaker and putting more strain on the opener motor the whole time. That's not a flaw in the house - it's just what happens when nothing forces the issue. The trade-off is that when something does finally go, it's often more than one part at once, because everything's been wearing down together.