The cost varies depending on how much digging is involved and if the residence or business connection has basement facilities. The Wastewater System Division recommends that at least 3 written bids be obtained from licensed sewer excavation contractors. Most residential connections cost in the range of $3,000 to $5,000. If there is significant landscaping or pavement that the contractor is required to restore, the cost can increase substantially.
In addition to the connection costs, each property is required to pay a Capital Facilities Rate (CFR) to Spokane County, which covers a share of the cost of constructing the collection sewers, interceptor sewers, pumping stations and treatment facilities.