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Shallowly Buried. Gas lines can be as shallow as 12 inches below the surface. Plastic lines need to be at least 18 inches in some areas and require a metal wire to be wrapped around them. This allows a pipe finder to locate the pipe if necessary. The gas lines run to a meter that is normally located on the side of the house.
Rating Newest Oldest. Best Answer: To be safe call your local building and zoning department to see if there is a code on this. Also call your local gas or LP company and ask them for a recommendation. If you are stubborn and still don't want to make the call, the minimum that I have ever heard of as a regulation for a buried line was telephone at 24 inches.