Shoreline sits on a stretch where the housing mostly went up between 1965 and 2001, with the bulk of it dating to the 1980s and 90s - split-levels, ramblers, and two-car garages built for exactly the kind of door hardware that was standard then. That consistency across the roughly 41 named areas we work in means a repair crew who knows this stock can usually identify the spring size and track type before opening a toolbox.
We work the corridor close in - Haller Lake and Broadview a few miles south, North Seattle and Lake City a few miles southeast, Lake Forest Park just two miles over, Mountlake Terrace and Edmonds a few miles north - and further out toward Mukilteo, Kenmore, and Woodway. The housing character shifts some as you move out toward Snohomish or down toward Mercer Island, but the core build era holds steady across most of what we see.
With roughly 103,888 owner-occupied houses across the service area and a median household income above six figures, a lot of these garages hold more than one car and see daily use - which is part of why worn hardware shows up as a hard failure rather than a slow decline.