Waterfront Homes for Sale in Mercer Island, WA

Based on information submitted to the MLS GRID by Northwest Multiple Listing Service as of Oct 2, 2026, 9:01 AM. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

IDX information is provided exclusively for consumers’ personal, noncommercial use; it may not be used for any purpose other than to identify prospective properties that consumers may be interested in purchasing, that the data is deemed reliable, but is not guaranteed by MLS GRID, and that the use of the MLS GRID Data may be subject to an end-user license agreement prescribed by the Member Participant’s applicable MLS, if any and as amended from time to time. © 2025 Northwest Multiple Listing Service. All Rights Reserved.