[constGard]

One of the most frustrating aspects of this is all the stuff that's buried in the backyard. I've had to painstakingly survey the property to find all of buried electrical and water pipes and I fully intend to pass the map on to the next owner.

[slyall]

Google is failing me but I've seen advice on having a book for your home. It lists the as-built, photos of the walls showing the wiring and pipes etc and then updates over the years.

I think "How Buildings Learn" by Stewart Brand covered it.