Gas lines are typically buried 18 to 24 inches deep in the United States for residential service lines, though depths vary by local regulations, line type, and soil conditions.
Types of Gas Lines
Service lines to homes sit at 18-24 inches.
Distribution lines range from 24-36 inches.
Transmission lines go deeper, often 30 inches or more, up to several feet for high-pressure mains.
Key Factors
Local codes dictate minimums, like 18 inches in California or 24 inches in New York.
Soil type, pipe material (e.g., deeper for metal to avoid corrosion), and traffic areas require extra depth.
Always call 811 before digging to mark lines, marked in yellow.
Propane lines follow similar rules, often 12-24 inches.
