The 3 things I learned when I had my foundation repaired that shocked me: city maps of utilities can be wrong

https://collinuyqb930.inkharbory.com/posts/3-things-you-should-know-before-calling-for-foundation-repairs-a-homeowner-s-guide-3

The 3 things I learned when I had my foundation repaired that shocked me: city maps of utilities can be wrong, private lines hide everywhere, and 811 marking is non-negotiable.