A collision repair is not one job. It is a sequence: strip the damage back until you can see all of it, straighten what carries load, replace what cannot be straightened, then refinish so the repair disappears.
Nothing is quoted properly until the damaged panels come off. What looks like a bumper is often a bumper, an absorber, a bracket, a sensor and a rail. The first estimate is written from what is visible; the supplement is written from what is underneath. Both go to your insurer.
If the car took the hit anywhere near a rail, a strut tower or a pillar, that gets addressed before anything is painted. A straight-looking car that is not straight underneath will wear tires, pull, and fail to protect anyone the next time.
Refinishing is matched to the panels either side of the repair, not to the paint code alone. Paint ages on a car, and a technically correct color can still read as a repair.
If it has been hit and it also needs mechanical work, it does not need to go anywhere else.