Housing in this part of the service area mostly dates from 1947 to 1987, with Los Altos sitting right at the middle of that window with a median build year of 1964. That means a big share of doors here were installed before steel gauges and insulation standards changed, and before galvanizing got as consistent as it is now. A door that age, in the mild temperate climate this area sits in, doesn't fail from freeze-thaw cracking the way it would somewhere colder - it fails from decades of slow surface rust at the bottom seam and from thin original steel that dents instead of flexing back. The households here carry a median income around $250,001, well above the wider service area's $207,750, and a lot of that money has gone into kitchens and additions over the years, not into the garage door - it's often the last original thing on the house. With roughly 10,756 households in Los Altos, that's a meaningful number of doors still running 1960s-era panels nobody's thought to check.