if the water meter is subject to freezing he'll want to send some
underground wire down the trench for a heater circuit. don't forget an
extra circuits for the doorbell, gate, camera, cable tv, intercom, wild
when trenching call the underground line companies, for
gas-water-electric existing lines to be marked so there is no danger
from the trenching contractor. checking with the neighbors to see if
their water lines freeze may help him plan to go deeper than he
see also plumbing codes for your particular state-county-town. hiring a
local plumber who already knows all this would be worth it,
and he can follow the plumber's instructions.
a local old-timer expert is needed.