In Canada, click before you dig (same thing rebranded) they can only locate public utilities. So water, power, gas, maybe main data lines. But private lines aren’t, so if someone installed a shed and ran power, clock before you dig can’t find it.

Sometimes you need to pay a private locator, they will dig through permits and use tools to locate possible lines. But if a homeowner buried their own power or water lines…. Your SOL in all regards.