We don't have a fixed price list to quote here, and pricing depends on door size, material, and whether the opener and track need replacing along with the door - so we're not going to invent a number for Brentwood.
What we can tell you is what drives the cost either way: a standard single steel door costs less than a double, insulated doors cost more than uninsulated, and if the springs, cables, or opener need work at the same time, that adds to the job rather than replacing it. Brentwood's median household income, at $139,567, runs a bit below the broader service area's $168,292, and we size quotes to the job, not the zip code - the same door costs the same whether it's going up in Brentwood or anywhere else we cover.
The honest limit here: we can give you a real number once we've seen the door and the opening, or from measurements and photos you send ahead of the visit. A phone quote with no measurements is a guess, and we'd rather not guess.