Potomac sits among a cluster of close-in Montgomery County communities - Cabin John three miles off, Travilah at four, Brookmont at five - and the housing pattern across this stretch runs consistent: 1960s and 70s construction dominates, laid out across dozens of named subdivisions and areas rather than one or two big developments.
That matters for garage doors because builders in that era standardized on a handful of torsion spring setups, and after fifty-plus years those springs are well past a normal service life even if the door still looks fine. Newer pockets mixed in from more recent decades bring different opener models and different failure points.