Development Engineering

The Development Engineering (DE) department of Lakehaven Water and Sewer District manages several areas including Certificates of Availability, new water & sewer service connections, new development projects, & information regarding existing water & sewer system facilities. Below are links to current fees & charges, as well as our department's FAQs by PDF. Click on the links to the left for more specific information and documents & forms (Check for 2023 updates).

 Fees, charges & deposits schedules

  1. Development Engineering

    Physical Address

    31623 1st Avenue S
    Federal Way, WA 98003

    Mailing Address
    P.O. Box 4249
    Federal Way, WA 98063


    Monday through Friday

    The Main HQ Campus is under construction and will be ongoing for the coming year.  Access and parking is limited. Please use extreme caution when driving or walking through the campus parking lot.

    Business Hours: Monday - Friday

    Customer Service

    Office Hours: 8AM to 4 PM

    Development Engineering (DE)

    Office Hours:  8AM to 3:30 PM EXCEPT Thursday: 8AM to 2PM

    Main headquarters campus is under construction

    orange construction post_canva
    Beginning July 15, 2022 Customer Service and Billing Staff will be in a staff meeting the 3rd Friday of each month from 7:30 AM to 8:30 AM.  On the third Friday of the month the office hours and phone hours will be 8:30 AM to 4:00 PM (instead of 8 AM to 4 PM).

    Effective August 10, 2022 the DE office is TEMPORARILY CLOSED to visitors and customers except by special appointment, due to construction safety concerns.  We anticipate this office closure to only last a few weeks.

    Parking is limited during construction.  The Water Shop Building (Development Engineering) will have two designated customer parking spots in front of the customer service entrance to the building.

    Contact either Customer Service and Development Engineering  outside office hours or email as follows:

    Customer ServiceDevelopment EngineeringEmergencies
    (Federal Way)
    Headquarters Building
    31627A 1st Ave S
    Water Operations Building
    31627B 1st Ave S
    Emergencies and Non-Emergencies:  
    * Call 253-941-1516 to report a water or sewer emergencies after business hours.
    Phone:253-941-1516 *253-945-1581
    Visit Contact Us for more information


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