2021 Cost of Trenching | Cost to Dig a Trench Per Foot ...
Sewer Line. Installing a sewer main costs most homeowners between $1,400 to $4,600. The type of housing may affect ultimate costs, permits, proximity to connector line or obstacles in landscaping. Permits and regulations are a factor in any sewer-related project. If a city or county isn't responsible for installing sewer lines, hire a professional.