We run jobs out of DeKalb to towns in every direction, and the houses look different depending on which way you drive. Across the whole service area, the housing stock mostly went up between 1959 and 2009, with the median build year landing at 1976 - so a lot of what's out there is the same 1960s-70s construction wave repeated across 22 named areas, not a patchwork of different decades.
The towns themselves, no particular order, no particular rank: Cortland, Sycamore, Malta, Maple Park, Virgil, Waterman, Genoa, Kingston, Hinckley, Kirkland, Burlington, Shabbona, Kaneville, Lee, Lily Lake, Elburn, Big Rock, Rochelle, Campton Hills, Hampshire, Sugar Grove, Pingree Grove.
We don't have a shop or a crew based in any of them - we travel out from DeKalb for every call. What we do have is a read on what that 1960s-70s build wave means for the door itself: steel sectional doors on extension or torsion springs, openers that have usually been swapped at least once by now, and original hardware on the houses nobody's touched since the first owner moved in. The practical difference between towns isn't the distance, it's the decade the garage was framed.