A new install here isn't a one-price job because the doors we're replacing aren't all the same door. A typical Cerritos house dates to around 1974, which usually means a single-layer steel panel door or an older wood-composite door, sized to openings that were standard for tract construction in that decade. Swapping that for an insulated steel or aluminum door changes the math depending on width, whether it's a single or double bay, and whether the existing jamb needs rework to take new track. We quote after we see the opening in person; we don't give a number over the phone for a door we haven't measured. Median household income in the broader service area sits at $96,041, but Cerritos itself runs well above that at $133,953, which is part of why we see more owners here asking for insulated doors and upgraded openers rather than the cheapest replacement panel. We'll walk you through where the cost goes - door, track, opener if you're swapping that too, and labor - before anything gets ordered.