Two generations of pipe out here are asking to retire.
In the oldest housing stock in North County, the plumbing question isn't whether the original lines will retire, it's when, and who decides, you or the pipes. Escondido's historic homes have supply lines from every era, hundred year old galvanized, early copper that's absorbed a century of minerals, and each ages toward the same ending, failures that arrive in sequence once the era's time comes. The repipe conversation exists so that ending happens on your schedule instead of the pipe's.
Reading the timing honestly is the skill. Fading pressure as galvanized narrows from within. A rusty tinge in the morning water. A pinhole here, then another there, the signature of era failure rather than bad luck. When those signs stack up, the patch by patch approach quietly becomes the expensive one, and the house is ready for the honest conversation, evidence first, what the pipes are, what shape they're truly in, what the real options look like, including the option of waiting when waiting is still defensible.
The repipe itself, told straight. New supply lines throughout, modern PEX or copper, run with respect for a historic home's bones, walls opened where needed and restored properly, days of planned work, not chaos. Everything explained in plain English before anything begins, every cost and timeline honest, the decision entirely yours, with a licensed contractor performing the work when you're ready. A century of service is a remarkable run for original pipe. Ending it deliberately, at the right moment, is how the next century starts.
"Galvanized rusts shut. Polybutylene lets go. The answer is the same."