We don't publish a flat number for cable work because it depends on whether one cable failed or both, whether the drum or bottom bracket also needs replacing, and whether the door is a single or double. What we can tell you is that in Brambleton, given the income level here - median household income runs $250,001, well above the area-wide figure of $154,734 - we see more homeowners choose a full cable-and-hardware swap over a patch fix on one side, since it avoids a second call a year or two later when the other cable goes.
For the general pricing range across our full service area, including other repair types, see our [Ashburn cable repair page](/garage-door-cable-repair-ashburn-va). We'll give you a firm number for your door before any work starts, not after.