That sucks. How old are the pipes/the house? How long are pipes supposed to last? Perhaps there is liability somewhere from the builder or a previous owner, or even for the inspections you got that told you everything was ok. Hope it doesn’t break your bank, and thanks for the words of wisdom.

Or just hire an ACTUAL plumber to inspect a house before you buy it, but one who will NOT be fixing it. Saying that as someone who owns a plumbing company. Chances are a lot of the problems you've had could have been fixed for way cheaper, too, for 25k I could repipe like 5 houses, unless you bought a mansion.

Don’t forget that « new » also has problems. My friend had recurring plumbing troubles in his new building, with multiple and costly interventions. In those cases, you’re the first here so you have to fix all the « factory » issues. The good thing would be to get something newish (already fixed by the first and not already falling apart from age).