Homeowners type that question and get a $800–$3,500 range. A shop that copies the middle of that range loses money on the far jobs and leaves money on the close ones. Charge the ticket you can actually deliver: parts + loaded shop hours + the drive + overhead + the margin you intend to keep.
The lines that belong on the bid
The slab. Square footage × what your supplier invoices for that construction (non-insulated steel, R-9, R-16, wood, aluminum/glass). Decorative windows and wind-load hardware are extras, not included in the slab line.
The spring kit. A double torsion pack is not two singles. High-cycle springs cost more and belong on high-use doors.
The opener, if it is on this ticket. Chain, belt, or jackshaft. Battery backup and wifi are adders. A replacement that reuses a working opener should not carry a new-unit cost.
Shop hours. Time on site, timed from your own crew. Starting points in the calculator are ballpark only.
Travel. Round-trip miles × vehicle cost, plus drive hours × loaded wage. This is the line a neighborhood lump sum hides.
Overhead and margin of price — not a markup on cost, because that is how the customer’s number and your P&L read.
Why a 16×7 is not two 8×7s
The door area is double, so the slab is about double. The trip is one trip. The opener is one opener. Setup, safety-reverse, and the second tech standing there do not double. Shops that quote “two singles” overprice the double and still underprice the drive on a far single.
Use the calculator
The garage door bid calculator runs the arithmetic in your browser. Nothing is uploaded. Replace every starting figure with your invoice and a timed job before you send the number.
Common questions
How much should I charge to replace a garage door?
Price parts (slab, springs, hardware, disposal), shop labor at a loaded wage, travel labor plus vehicle miles, then overhead and a margin of price. A typical insulated 16×7 with a new belt-drive opener is not twice a single 8×7 because travel and the opener happen once.
Is a double door twice a single?
No. The slab is about twice the square footage, but the trip, the opener, and much of the setup happen once. Labor on a 16×7 replacement is closer to 1.3× an 8×7 than 2×.