Most houses in this service area went up between 1977 and 2011, with the bulk of the stock dating to the 1980s and 90s across neighborhoods like Hazel Dell, Orchards, and Five Corners. That era of construction leaned hard on extension-spring systems with galvanized lift cables running over stamped pulleys, and after two or three decades those cables are at or past their working life. The cable itself doesn't usually snap clean - it frays one strand at a time where it wraps the drum or runs through the pulley, and the fray is easy to miss until the day it lets go.
Our climate band here is mild with occasional freeze, which isn't brutal on steel cable the way a hard freeze-thaw region is, but damp mornings still mean rust creeping into any spot where the galvanizing has worn thin from years of winding and unwinding. On a 1990s-built door that's never had the cables swapped, that slow rust is usually the thing that finally parts a strand under load - often on a cold morning when the spring tension is working hardest against stiff, cold steel.
We see this pattern across the whole area, not just one subdivision - it's a function of when the houses were built, not where.