Brentwood has roughly 20,918 households, and the housing here largely dates to construction after 2000, well past the mild 1980s wave that shaped a lot of the wider Livermore service area. That newer stock means fewer of the mismatched retrofits we see on older houses - non-standard track widths, springs swapped out by a previous owner with whatever was on hand, openers hung on brackets that were never rated for the door weight. Median household income here runs around $139,567, and we mention that only because it tends to track with owners who replace a failing door outright rather than nurse it along, which shows up in the mix of repair versus replacement calls we get from this area. The mild temperate climate common across our whole service area means we're not dealing with frost-heave on slab foundations or extreme humidity swelling wood jambs, so most of what pulls a door out of alignment here is age and cycle count, not weather.