Facility Rentals

Planning a Celebration? We’ve got the perfect space for you!

From birthday parties and baby showers to retirement celebrations, graduations, and memorial services, Mt. Si Senior Center offers flexible, affordable, welcoming spaces to make your event special.
Choose our spacious dining room, which seats up to 100 guests, with the option to add access to a licensed commercial kitchen and coffee service—perfect for larger gatherings. Hosting something more intimate? Our multi-purpose room offers a bright, adaptable setting for smaller events.

Let us help you create memories in a space that's just right!

Please note: setup and cleanup are the responsibility of the renter.


For more information or reservations, contact  Demelza Riley at 425-888-3434, ext. 125.
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Multi Purpose Room:

Hosting a public meeting, workshop, or community event?
Our Multipurpose Room is the largest and most versatile space at Mt. Si Senior Center—perfect for events that need room to move and plenty of natural light.
This bright, open space features sliding glass doors that open to beautiful views of Gardiner Weeks Park, a newly updated floor, and a flexible layout ideal for public meetings to classes, celebrations, and group activities. The room includes a kitchenette and can be easily divided with a moveable wall for breakouts or smaller gatherings.
Included in your rental:
✔️ Tables and chairs
✔️ Separate entrance
✔️ Adjacent restrooms
✔️ Park views and fresh air

Dining Room:
Looking for the perfect place to host your next event?
Our beautifully renovated dining room at Mt. Si Senior Center offers a warm and welcoming atmosphere, complete with floor-to-ceiling windows, striking stonework, a spacious, flexible layout that’s ideal for gatherings of all kinds, with a licensed commercial kitchen.
From community fundraisers to private parties and even weddings, this space has been the backdrop for countless memorable moments. The room features 8-person round tables with chairs, brand-new carpet, a commercial coffee maker, and adjacent restrooms for convenience.

Classroom:
Perfect for small groups, meetings, or classes, Mt. Si Senior Center’s classroom offers a comfortable and focused setting just off the north entrance. This cozy space features a conference table with chairs, a serene view of the courtyard, and adjacent restrooms for added convenience—making it an ideal spot for workshops, discussion groups, or planning sessions. Quiet, convenient, and just the right size for meaningful connection.

Commercial Kitchen:
Our licensed commercial kitchen is fully equipped and ready to support your next culinary event or large-scale meal prep. The space includes two ovens, a four-burner gas range, a serving pass-through window, and a sanitizing dishwasher, along with a full inventory of pots, pans, and trays—all meeting Washington State Health Department standards.
A valid food handler's permit is required for anyone using the kitchen. This space can be rented on its own or paired with the dining room for full-service event hosting. Ideal for caterers, community meals, or cooking classes!