Because a pipe leak needs both a plumber to fix the pipe and a restoration company to handle the damage, owners often ask who to call first. As a general rule, stopping the water comes first: shutting off the leaking line or the main supply, and getting a plumber to repair the failed pipe or fitting, ends the source of the problem. Drying soaked materials while a pipe is still leaking is wasted effort, so the plumbing fix usually leads. With a slow or hidden leak that has already done its damage, the two can also be lined up close together, with the plumber repairing the line and the restoration pros assessing the moisture in the same window.
The hand-off between the two is where things can fall through the cracks, so it helps to understand the seam. A plumber's job ends at a working pipe; it does not include drying the wall it leaked into or repairing the stained ceiling below. The restoration company picks up from there, finding how far the water spread, drying the materials, and repairing the finishes. Documentation is part of that hand-off as well: photographing the failed pipe, the stains, and the damage supports an insurance claim, where coverage often hinges on whether the leak was sudden and accidental rather than slow and ongoing. Reviewing the policy or asking the insurer is the way to understand what applies.