Most jobs here are a spring, cable, or roller replacement, and those don't require touching the door's structure - we're in and out without disturbing the opening itself. Where it takes longer is when the door's balance has been off for a while and the opener has been compensating; in that case we check the opener's force settings and the track alignment along with the part that actually failed, because replacing a cable on a door that's still out of balance just sets up the next failure.
For the 1,581 households in North River Shores (household count for this area), most garages are a single door, standard width, which keeps parts straightforward. Where it gets more involved is a double-wide door on an older torsion setup - those take two matched springs, not one, and if only one was swapped out previously, that mismatch alone can be the whole problem.