Trenching in Houston: local operators and what it costs

Clay that holds water

Much of the Houston area sits on clay soils such as the Lake Charles and Beaumont series, which the USDA describes as very slowly permeable, on prairies so flat that slopes are mostly under one percent. A trench cut through this ground drains poorly, so after a heavy rain it can sit full of water for days. In a long dry spell the same clay pulls apart in deep cracks and digs hard. A trench dug between those extremes is easier to cut cleanly and to backfill so it does not settle later.

Texas 811 before the first cut

The Railroad Commission of Texas says homeowners must notify 811 at least two business days, not counting weekends and holidays, before digging, even in their own backyard. The request window under state law is no less than forty-eight hours and no more than fourteen days, and if digging has not started within fourteen days a new notice is needed. Whoever runs the machine should have the request in place before breaking ground.

When a city permit enters the picture

Houston's code allows excavation in the public way, which includes paved streets, sidewalks and drainage areas, only by permit holders. A trench that crosses the sidewalk or the strip along the street to reach a service line needs that permit. For a trench that stays on private property, confirm with Houston Public Works whether a permit applies before work starts.

Rain and storm season

Bush Intercontinental Airport averages about fifty-two inches of rain a year, with June, October and May the wettest months, and hurricane season runs from June through November. Leave room in the schedule for a wet week, and keep spoil piled where it will not wash into the street drain.

Details for your project post

Say what the line carries, how long and deep the trench is, where it begins and ends, and whether it passes under a fence, a walkway or tree roots. Mention access to the backyard and whether the clay dug from the trench should be hauled away.