The broader service area we cover spans housing built between 1962 and 2008, with a median around 1976, across three main pockets of homes. Calhoun itself skews older than that average - its own median build year sits right at 1962, which puts most of its garage doors into their sixth decade. With 346 households in the area, that's a fair number of original doors still in service, on hardware styles that changed more than once since they went up. A door from 1962 was almost certainly built for a single torsion spring and a lighter steel gauge than anything sold now. That matters when a spring finally lets go - the replacement part has to match an older drum and shaft size, not whatever's on the shelf for a 2015 install.