Alcoa's housing runs younger-middle than the median across the wider service area. Where the broader coverage area spans construction from 1958 to 2003 with a median around 1989, Alcoa's own median build year sits at 1976 - a good 13 years earlier. That's a meaningful gap. A house framed in the mid-70s was built to a different garage opening standard, different stud spacing in some cases, and almost certainly came with an extension-spring setup rather than the torsion systems that became standard by the late 80s and 90s stock that dominates elsewhere in the area. With 4,722 households here, that 1976-era construction represents a real share of the doors we get called out to work on, not an outlier.