17+ Mansions for Sale in Sammamish

Based on information submitted to the MLS GRID as of January 22, 2026 10 AM. All data is obtained from various sources and may not have been verified by broker of 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 consumers may be interested in purchasing. Some listings have been excluded from this website.
Properties with the icon are courtesy of Northwest MLS.