Darnestown is a small place as these things get measured - about 2,314 households, not a dense grid of streets but a scattered mix of lots, many of them larger than what you'd find closer into Germantown. That size matters for installs because it means fewer identical door openings in a row and more one-off sizing. We don't pull up to a block of twenty matching garages here; we pull up to a house built on its own terms, usually sometime around 1985 going by the area's housing numbers, with a door opening that may or may not match the stock sizes a big-box crew keeps on the truck. The job goes sideways when someone shows up with a standard 16x7 and the rough opening is a half-inch off, or the header isn't framed for the track radius a newer door needs. On a smaller, older-build town like this, we measure the opening before we quote the door, not after.