Pipes tend to be exposed in brick houses so you don’t need to tear the wall down when you have a leak.

>How would this work in a solid house?

I've got copper tubing running along the bottom of the walls and going through inner walls and flooring. I can't think of anything going through the outer walls. We've got an antenna cable routed through a window frame.

You don't. You really don't need that for years and years in a row. When you need, you do need some tools though.

I see we can have all kinds of analogies; I guess habits play a big role here. Different places in USA have different house styles - it's a big country.

Yep. It's a ton of dirt