San Marino's housing stock centers on 1943, a good fifteen years ahead of the median 1959 build year across the wider Pasadena service area. That gap matters more than it sounds. A garage built in 1943 was framed before plywood sheet doors were standard, often with a single wood slab on a track system that predates the torsion springs most repair trucks carry as stock parts today. Across the 65 named communities we cover, San Marino sits closer to the old end of the range, not the middle of it.
The area also runs smaller than most of its neighbors - about 3,807 households, a fraction of the 274,200 owner-occupied houses across the full service territory. That's a tight, established footprint, and it tends to hold onto original construction longer because there's been less teardown-and-rebuild churn to force replacements. Median household income here, at $187,633, is well above the regional figure of $94,792, which usually means owners who repair and upgrade rather than let a door limp along - but it doesn't mean the doors themselves are newer. Old houses with money behind them still have old garage doors until someone calls about one.