Municipal Facility Planning

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Mercer Island City Hall

Over the past several years and following the unplanned closure of City Hall in 2023, the City of Mercer Island has been developing a comprehensive facilities plan to ensure continued and sustainable delivery of municipal programs and services to the residents of Mercer Island for the next 50+ years. The City is currently implementing two key strategies:

  • A new Public Safety and Maintenance (PSM) Facility that will house the Police Department, the Emergency Operations Center, the Customer Service Counter, the Public Works Maintenance Teams and Yard, and the City’s IT and GIS teams. It will be constructed on the City Hall and Public Works Building site. A bond measure to fund the new PSM Facility will be presented to Mercer Island voters at the November 4, 2025 General Election.
  • A recently acquired property at 9655 NE 36th Street, adjacent to the City Hall site, will eventually serve as the permanent location for additional City departments, including the Community Planning and Development Department, the Public Works Capital Projects and Engineering teams, and the Youth and Family Services Department.

Islanders are encouraged to stay informed on the facilities planning process here on Let’s Talk. You can review key documents, watch City Council meeting recordings, and view renderings of the proposed PSM Facility in the materials on this page.


Over the past several years and following the unplanned closure of City Hall in 2023, the City of Mercer Island has been developing a comprehensive facilities plan to ensure continued and sustainable delivery of municipal programs and services to the residents of Mercer Island for the next 50+ years. The City is currently implementing two key strategies:

  • A new Public Safety and Maintenance (PSM) Facility that will house the Police Department, the Emergency Operations Center, the Customer Service Counter, the Public Works Maintenance Teams and Yard, and the City’s IT and GIS teams. It will be constructed on the City Hall and Public Works Building site. A bond measure to fund the new PSM Facility will be presented to Mercer Island voters at the November 4, 2025 General Election.
  • A recently acquired property at 9655 NE 36th Street, adjacent to the City Hall site, will eventually serve as the permanent location for additional City departments, including the Community Planning and Development Department, the Public Works Capital Projects and Engineering teams, and the Youth and Family Services Department.

Islanders are encouraged to stay informed on the facilities planning process here on Let’s Talk. You can review key documents, watch City Council meeting recordings, and view renderings of the proposed PSM Facility in the materials on this page.


  • February 4, 2025 City Council Planning Session

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    At the February 4, 2025, City Council Planning Session the Public Safety and Maintenance Facility (PSM) design team gave the City Council an update on the progress of schematic design of the PSM Facility. You can review the agenda bill, the presentation, and the meeting recording is available here.

    Staff provided an overview of the facilities and the circumstances leading to the design to design the PSM Facility. The City’s architect team Northwest Studio presented the early schematic design documents and cost estimates to the City Council. They also sought feedback from the City Council on design strategies and early design choices. 

    The design team presented a preliminary cost estimate of the PSM Facility, estimating that it will have a cost range between $105 and $110 million. This estimate includes constructions costs, soft costs, an escalation factor, and state and local sales tax.

    A more detailed cost estimate will be prepared during the Schematic Design process as the building and site plans are further refined. The revised Schematic Design Cost estimate will be presented to the City Council in June 2025.

  • December 2024 - Councilmembers Take Project Team Tours

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    In the fall of 2024, Mayor Nice, Councilmember Weinberg, and the PSM design team toured Police Department facilitiesin Shoreline, the University of Washington campus, and Kirkland. The team heard about both successes and lessons learned from the construction or renovation of these police facilities to help inform work as we plan for our new facility.

    The design team and Councilmembers Anderl and Jacobson toured the Kitsap County Public Works facility in December of 2024. This tour focused on their office space and training space layout, ingress/egress for large vehicles and equipment, covered storage, lighting, security, and staff amenity spaces.

    The project team will continue to learn from comparable sites and neighboring agencies as the design process progresses.

  • November 2024 - Interim Police Facilities

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    The Police Department has been significantly impacted by the closure of City Hall, which housed the police precinct. The City explored a number of alternatives for the Police Department, landing on leasing modular buildings. The lead time on these buildings was over a year. The Department initially relocated to the Mercer Island Community & Event Center and then over the summer moved to the Luther Burbank Building. The modular buildings opened for use in the fall of 2024.

  • November 2024 - Staff Workshops on Planning and Design

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    Once City Council gave direction to begin planning for the Public Safety and Maintenance Facility, staff and the City’s architectural consultant team, Northwest Studio, have conducted workshops with the City teams anticipated to be housed in the future PSM building. This pre-design work considered the spaces needed in the building, in addition to how the spaces are best organized to achieve efficient workflows, to plan for future growth, and to accommodate changing space needs over time

    In the fall of 2024, the PSM design team conducted a follow-up site visit with the City’s Public Works Department operational leads assess how the Public Works teams utilize the facility and yard space for equipment and materials storage. The visit focused on optimizing these areas in the new facility to enhance efficiency, improve service levels, and reduce operational costs.

    The PSM design team also led a site tour of the City Hall and Public Works Building properties for all subconsultants working on the project. This tour allowed the various specialty contractors of the design team – such as civil and structural engineering, landscaping, and architecture – to see the conditions and context of each property and ask questions of staff and design team leads.

  • May 21, 2024 - Public Safety and Maintenance Building Design Progress Update

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    At the May 21, 2024 City Council meeting, City staff presented an update to the Public Safety and Maintenance Building design process.

    At the March 1 Planning Session, City Council directed the City Manager to begin planning for a new Public Safety and Maintenance Building (PSM) on the current City Hall Campus (see AB 6420). This new facility will replace the existing Public Works Building and provide a new combined home for the City’s Public Works teams, Police Department, Emergency Operations Center, and IT & GIS.

    Staff and the City’s architectural consultant team, Northwest Studio, have conducted workshops with the staff teams expected to be housed in the future PSM building to inform the ongoing design work. The pre-design work considers the spaces needed in the building, in addition to how the spaces are best organized to achieve efficient workflows, to plan for future growth, and to accommodate changing space needs over time.

    The presentation also included an overview of Risk Category levels in building design. The risk category of a building reflects the relative resilience to natural disasters and other building failure risks. The new PSM building is intended to be a Level IV Risk Category Building. Risk Category IV includes buildings that are essential in that their continuous use is needed, particularly in response to disasters. Police stations and emergency vehicle garages, Emergency Operations Centers, public works staff areas, and equipment necessary for emergency response, must remain operational during and after major disaster type events.

    The presentation concluded with a commitment to continue the work with Police, Public Works, EOC staff, and IT & GIS to gather feedback on design concepts and proposed building programming and workflow. City staff are preparing to return to the City Council in June to present preliminary design and siting concepts for the Public Safety and Maintenance building, including early cost estimates.

    Read the materials here and view the presentation here.

  • May 21, 2024 - Presentation to City Council: Follow Up to Public Works Building FCA

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    On May 21, 2024, City staff presented the City Council with a follow-up to the Facilities Conditions Assessment and related studies of the Public Works building.

    At the February 6, 2024 City Council meeting, City staff presented initial findings from the FCA and a high-level overview of the potential repairs and investments necessary to keep the Public Works building operational (see AB 6402). These include both critical systems repairs and basic safety, efficiency, and comfort centered upgrades. At the May 21, 2024 City Council meeting, City staff finalized the FCA report and presented initial findings from a detailed seismic analysis of the building.

    While the results of these studies confirm the functional obsolescence of the existing Public Works building, it remains necessary to operate the facility for approximately five years while a new building and yard is designed, funding is secured for construction, and the project is completed. Near-term issues that will be addressed include:

    • Completely remove the existing green roof and accumulated soil.
    • Install anchoring between the walls and the wood diaphragms at the two higher level roofs (the second-floor office space and high bay garage).
    • Install a subsurface concrete-grade beam along the exterior at each end of the high-bay garage doors.
    • Retrofit numerous unbraced interior CMU (concrete masonry unit) walls throughout the building.
    • Provide additional fire extinguishers or extinguishing systems throughout the building.
    • Include fall restraint guards at the Public Works building and select outbuildings.
    • Apply safety film to existing wired glass windows to prevent shattering.

    City staff have started to address the priorities identified in the report to extend the useful life of the Public Works Building. Funding recommendations for the identified capital projects will be included for consideration this fall as part of the Biennial Budget Development process.

    If occupancy of the Public Works building is anticipated to exceed five years, the next set of investments will be significant. Construction costs are expected to increase, and upgrades to meet current code requirements will become necessary, further expanding the cost of operating this facility at a minimally functional level.

    You can view the discussion and review the presentation here.

  • March 6, 2024 - A Message to the Community from the Mercer Island City Council Regarding Planning for the Development of a Replacement Public Safety and Maintenance Building

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    Last week, your City Council took a pivotal step in the future of City operations by unanimously approving the costing and design for a new Public Safety and Maintenance Building on the current City Hall campus. This facility would house the City’s Police Department and public works crews, providing a safe and functional facility that meets the urgent needs of our City today.

    The motion, put forward by Deputy Mayor Rosenbaum during the Council's annual planning session, demonstrates a collective commitment to enhancing the safety and well-being of our employees and community. The existing Public Works Building is well beyond its useful life and hasn’t met our needs for some time. The closure of City Hall only exacerbated this challenge, displacing staff across all teams and the specialized functions of our Police Department.

    Careful evaluation and planning brought us to this path forward. Building a new facility serving both our police and public works teams meets the unique needs of both departments in a much more efficient manner. The City Manager will now commence planning for this new facility, with a preliminary scope and cost estimate due in Q2 2024.

    What does this mean for a future City Hall and the rest of the City’s teams? We continue to discuss opportunities for a home in Town Center – a shift that represents a generational investment in a more accessible, efficient, and community-focused downtown City Hall. These decisions are not just about buildings and staffing but about laying the groundwork for a more connected, safe, and vibrant Mercer Island. We’ll continue to keep you updated on Let’s Talk, the City’s public engagement platform.

    The success of last week’s Council Planning Session reflects extensive preparation by City staff and the Council's supportive and collaborative spirit aimed at recognizing the valuable contributions of all City employees. Together, we are able to navigate the complexities of our current challenges and make informed decisions that reflect the priorities and needs of you, our residents.

    A great deal of dedication, insightful discussions, and strategic decisions have set in motion what we believe will be a very positive trajectory for the City of Mercer Island. These initiatives will bring about meaningful and positive changes in our community – we look forward to working across the Island to articulate this vision and we’re excited to see the impact our collective efforts will have for the Island’s future.

    Mercer Island City Council

    Mayor Salim Nice
    Deputy Mayor Dave Rosenbaum
    Councilmember Lisa Anderl
    Councilmember Jake Jacobson
    Councilmember Craig Reynolds
    Councilmember Wendy Weiker
    Councilmember Ted Weinberg

  • March 1, 2024 - Council Directs City Manager to Commence Planning for a New Public Safety and Maintenance Building

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    At the City Council Planning Session on March 1, 2024, the Council unanimously approved AB 6420 directing the City Manager to commence planning for a new Public Safety and Maintenance Building on the current City Hall campus. This new facility will replace the existing Public Works Building and provide a new combined home for the City’s Public Works teams and Police Department.

    A preliminary scope and cost estimate will be presented to the Council in Q2 2024.

    In early 2023, the City began a process to complete Facility Conditions Assessments (FCAs) for various municipal buildings, including City Hall, the Public Works Building, the Annex Building at the Mercer Island Community & Event Center, the Luther Burbank Administrative Building, the Mercer Island Thrift Shop, and the former Tully’s Building. Due to the emergency closure of City Hall in April 2023, this work was reprioritized to meet the most pressing needs.

    Given the age and condition of the Public Works Building, the City Manager directed staff and consultants to complete a FCA for this building, while pausing assessment work on the other buildings.

    The assessment identified multiple systems that are failing or in need of significant repair or investment. This information was presented to the City Council on February 6, 2024 (AB 6402).

    Combined with the City’s urgent space needs for teams displaced by the City Hall closure, the City Manager recommended that the Council prioritize the Public Works Building for replacement. Council’s direction allows the City Manager to proceed with building this new facility on the existing campus.

    More information about this project will be shared soon. You can review the full Let’s Talk page to learn more about the City’s Long Range Facility Planning work.

  • February 1, 2024 - Council to Review Preliminary Findings from Public Works Building Facility Conditions Assessment

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    As part of the process to evaluate the condition of municipal buildings and develop a plan for their future, the City Council will review preliminary findings from the Public Works Building Facility Conditions Assessment at the February 6, 2024 regular meeting. Staff and consultants will present the preliminary findings from the assessment and answer councilmember questions.

    The Public Works building, located behind City Hall, was constructed primarily as a workshop and mechanic facility in 1981. Since then, it's been repurposed several times to meet the changing needs of City operations. The building is 15,350 square feet and currently houses the following operational and administrative teams made up of Full Time Equivalent Employees (FTEs) and Limited Term Employees (LTEs):

    • Right-of-Way and Stormwater Team (10 FTEs)
    • Water Utility (8.5 FTEs, 3 LTEs)
    • Sewer Utility (6.5 FTEs)
    • Parks Maintenance (10 FTEs)
    • Support Services Team (3 FTEs, 1 LTE)
    • Public Works Engineering and Administration Teams (19 FTEs)

    Following the closure of City Hall in April 2023, the City’s Utility Billing Team was also re-located at the Public Works Building (3 FTEs). In total, there are 64 employees (FTE and LTE equivalents) and 15 to 20 seasonal employees who currently operate out of this facility.

    The Facility Conditions Assessment process identified the following preliminary findings about the building's condition:

    • Roofing is at the end of its projected useful life and leaks are prevalent throughout the building.
    • The current 150kVA electrical service is insufficient to support the current needs of the facility.
    • The electrical distribution system is aged, with some critical components at the end-of-life.
    • The original HVAC system is mostly obsolete throughout the building, delivering poor performance, high energy consumption, and marginal air quality.
    • Plumbing is inadequate to meet the staffing levels for the building, requiring the use of portable toilets to meet sanitation requirements.

    Based on the findings from the FCA and known operational deficiencies, the City Manager is recommending the Public Works Building be prioritized for replacement. Staff and consultants are currently working on preliminary replacement strategies for the City Hall Building and the recommendation is to combine the planning process to address replacement of both buildings.

    While the initial assessment is preliminary, staff and consultants are finalizing the assessment and cost estimates - they expect to have this work complete by June 2024. Staff will identify critical system repairs needed to extend the life of the building temporarily (for five to ten years) while replacement strategies are developed. Staff will present those strategies to the City Council as part of the upcoming 2025-2026 Biennial Budget Development process.

    A follow-up discussion on City facilities is planned for the March 1, 2024, City Council Planning Session. This presentation and discussion will primarily focus on the replacement strategies for City Hall and the Public Works Building.

    You can review the City Council Agenda Bill 6402 for additional details on this presentation. The preliminary report is also available online.

  • November 2023 - An Update on City Operations, Planning Continues for City Hall Replacement

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    Earlier this year, the City Council voted to permanently close City Hall. City staff, the City Council, and outside experts have since been hard at work planning for a solution to the City Hall closure, as part of the City’s existing Long Range Facility Planning process.

    While City Hall may be closed, most City operations continue as normal. Approximately 80% of City employees continue to work in-person on Mercer Island, whether from shared workspaces in administrative areas of the Community Center, the Maintenance Building, the Luther Burbank Administrative Building, or out in the field. Remaining staff are working from a combination of home offices and in shared/rotating office spaces on-Island, often holding meetings at the Community Center or at other locations.

    The City is standing up temporary facility solutions for specialized operations that were displaced by the closure of City Hall, including City Court and Police Department facilities:

    Municipal Court: At the November 7 City Council meeting, the Council approved a lease agreement with the City of Newcastle allowing Mercer Island Municipal Court to temporarily operate out of Newcastle City Hall. Court staff are currently arranging operating details, with information on accessing court services in Newcastle coming soon.

    Police Department: While our Police Department staff have worked hard to continue normal levels of service without access to the Police wing of City Hall, day-to-day operations have been challenging for our officers. At the November 21 City Council meeting, the Council reviewed a budget allocation for Police Department portable facility solutions. These temporary facilities will provide dedicated spaces for the many specialized needs of a police department and greatly ease day-to-day challenges for our officers and staff.

    Work on a long-term replacement strategy for City Hall continues. The City will consider a wide range of options that will result in a responsible, efficient, and sustainable future for City Hall operations. While much of the planning related to real estate transactions must be conducted confidentially through the City’s broker, community engagement on the long-term options to replace City Hall is anticipated in 2024. Islanders are encouraged to stay updated and engaged with this project here on Let’s Talk.

    As always, City staff remain available and ready to assist you. For the quickest and fastest service, community members should contact the City of Mercer Island Customer Service Team at 206-275-7600 or at customerservice@mercerisland.gov.

Page last updated: 03 Jul 2025, 05:09 PM