New Lines

Hi I'm looking for some information on installing some underground piping for a granny house we built in the backyard. I have to install the gas line, water line and electrical and I have one trench. Does anyone know if I can run all of these in one trench and what the depth of each utility and the offset would be if they can be ran together?

Chuck
San Diego, CA

That's something for your local building department.

In Seattle, you wouldn't be able to run all of those in a single ditch.