Garage door work prices by the part, which makes it one of the more legible trades to buy. Published national guides put broken spring replacement at roughly $150 to $400, opener repair at $100 to $300, a new opener installed at $350 to $700, a single panel at $250 to $800, and full door replacement from about $750 upward with size and insulation. A general repair visit for cables, rollers, or track work usually lands inside the $150 to $400 band.
Read Waltham costs against the city's own published average: $226 for a typical repair, with spring pairs framed at $250 to $500 locally. A quote at twice the average is not automatically wrong, doors differ, but it should be able to say why in parts: spring class, cable condition, roller and bearing state. In a market where the average is public, the burden of explanation sits on the outlier quote, and the written scope is where it pays that burden.
The variables that move a specific quote are door size and weight, whether the failed part took a second part with it (a spring that breaks can bend a track; an opener run against a dead spring strips its gear), and timing: after hours emergency work is priced as emergency work, and an honest company says so before dispatch, not on the invoice.
The decision rule the trade itself uses is the 50 percent rule: when the repair list on an older door totals half or more of a replacement door's price, replacement usually wins, especially once the door's panels are discontinued and every future section repair becomes a full door conversation. Ask for both numbers in writing. A company that will only quote the repair is telling you something.
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