Portland gets one or two real freeze events most winters — a cold snap where overnight temperatures sit below 25°F for two or three days. That's plenty to split an unprotected supply line in a crawl space, an exterior-facing wall, or a garage. The classic pattern is that the burst happens during the freeze but the leak doesn't show up until things thaw — so the call comes in the warm window after, when ice plugs melt and water finally finds its way to a ceiling stain.
The other recurring driver is the housing stock itself. Pre-1940 homes in Irvington, Ladd's Addition, Eastmoreland, and inner SE often still run original galvanized supply piping. When galvanized lets go in one place, the pipe wall has thinned to the point where another failure is likely — sometimes within months, sometimes longer. We give you that read honestly — sometimes the right call is the spot repair, sometimes it's a partial or whole-house repipe. Either way, we hand you the numbers in writing and let you decide.