Abstract: A method for installing a plurality of utility lines from a plurality of utility distribution sources to and end user includes excavating a single trench from a common location at about the utility distribution sources. The trench is excavated between about 66 and 48 inches deep and about 24 inches wide. A plurality of utility lines are positioned in the single trench, wherein an electrical utility line, if installed, is at a lowest elevation in the trench. A water line, if installed in the trench, is at an intermediate elevation therein, and a gas line, if installed, is at an uppermost elevation in the trench. A single partitioned service box is installed in the trench through which the utility lines can be accessed. The utility lines are buried with appropriate fill.