A radius drawn from your shop spends Virginia money on District addresses
Geographic targeting is the first decision in a DMV HVAC account and the one most often made by dragging a circle on a map.
The District, suburban Maryland and Northern Virginia are separate legal jurisdictions that license and permit on their own terms. A twenty mile circle around a shop in Falls Church covers all three. If your standing does not, you are paying for clicks that cannot become work.
Build the targeting from the jurisdictions you actually serve, then trim by drive time. Beltway congestion means two addresses the same distance away can be a forty minute difference at four in the afternoon.
Exclude aggressively at the boundary. It feels wrong to turn off spend, and it is the single change that most reliably improves cost per booked job in accounts like this.
One more targeting detail that gets missed: set location settings to people in your targeted area rather than people interested in it. A transient population searching from elsewhere about a future move is a different buyer and should not be paid for at emergency rates.