Northshore Utility District is a special purpose district that provides water and sanitary sewer services to Kenmore and parts of Lake Forest Park, Kirkland and Bothell. Coordination with NUD is required whenever a development activity requires the extension of an existing water or sewer main.

The developer extension process is broken out into five distinct phases:

two workers in protective gear examining a large sheet of paper

During the predevelopment phase the developer will inquire with the District about the availability of water and sewer service for the undeveloped parcel or subdivision. If water or sewer main extensions are required a pre-application meeting is held with the developer, developer’s engineer and the District to discuss the requirements. Sewer and water construction plans are then prepared by the developer’s engineer.

During the application phase, the developer submits the Developer Extension Application and an initial set of plans. Plans are reviewed and if necessary, a correction letter will be issued identifying any needed changes to the plans. During the plan approval process a DE Agreement is prepared, and connection fees are calculated.

Construction begins with a pre-construction meeting between District staff, the developer, the developer’s engineer and contractor. The construction of water and sewer extensions are then inspected by District staff.

Once construction is complete and final inspections are approved, District staff will prepare the bill of sale documents and collect final connection fees. A two-year maintenance bond is provided by the developer and then the project is accepted by the District, starting the two- year warranty period.

Once the water and sewer extensions are complete the development is ready for service connections, builders will apply for water meters and side sewer permit. District staff will then install the meter and inspect the side sewer connection.

Small Project Services (SPS)

Properties being subdivided, including short plats and single properties, usually require water and sewer main line extensions. However, in lieu of main line extensions, the District may consider waiving the main line requirement and allowing the developer to install private side sewer lines and water service lines under the following conditions:

  • The proposed subdivision contains four or fewer lots which gain access from a private access tract.
  • The distance from the right-of-way to the furthest lot does not exceed 250 feet.
  • There is no possibility for further subdivision under the current zoning.
  • The subdivision connects directly to a District-owned water or sewer facility.
  • There is no possibility of future extension beyond or adjacent to the proposed subdivision.
  • There is no requirement or need for looping of the water system.
  • There are no unusual circumstances related to the project that would otherwise require a water or sewer main extension as defined by District policy(s).

Developments that only require side sewers or water services are not required to execute the DE agreement.

For questions related to the development review process, please contact the District at or (425) 398-4401.

Application for Developer ExtensionApplication for SPS