There is no side yard on Capitol Hill, so the camera goes up the alley
Access decides who films, at what hour, and what ends up in the frame beside your work.
The crew reaches a rowhouse roof through a hatch, out a third floor window, or off a ladder set in the alley, and the alley is often blocked by a car belonging to somebody who is at work until six.
So the arrival shot is the ladder going up between two buildings, because arrival is the part an owner is actually nervous about. Film it once, film it properly, and stop reshooting the same twelve feet on every job.
The frame is the harder problem. Standing on a flat roof between party walls you are looking straight into a neighbor's deck, their windows and their kids, and none of those people hired you. Watch the footage back before any of it goes out.
Parapets help. Shooting low along the membrane keeps the neighbor's roof deck out of the shot and puts the camera where the work is, which is the seam, the drain and the water standing in a low spot.
None of this applies in Rockville or Fairfax County. There is a yard to stand in and a slope to walk, so a clip shot out there tells you nothing about whether your crew can film in the District.