We don't quote a number here without seeing the door, so we won't pretend to. What actually moves the price on a job like this is whether the header needs reinforcing before we mount anything, whether there's existing wiring we can reuse or if we're running new low-voltage line to a wall switch and sensors, and what drive type you want on the opener itself.
Lakewood's median household income runs at $116,794, a bit above the $113,204 median across the rest of the area we cover out of Costa Mesa. That's context, not a quote - plenty of owners here ask for openers with battery backup and rolling-code security rather than the base unit, and that shows up in the price of the part before labor is even in the picture.
The one thing we won't do is install a modern opener on a header we haven't checked, even if that means the estimate goes up because reinforcement gets added to the job. A callback because the bracket pulled loose costs everyone more than doing it right the first time.