Bring this ad and receive a $9 application fee! Ask about other Specials Trillium Heights is located on the beautiful Kitsap Peninsula, just above the city of Silverdale. The one, two, and three-bedroom luxury apartment homes feature beautiful Olympic mountain views and were designed expressly for those who appreciate the Northwest lifestyle at its best. Trillium Heights is located on the beautiful Kitsap Peninsula, just above the city of Silverdale.