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4102 100th Avenue SEMercer Island, WA 98040Price: $8,998,000

  • Price: $8,998,000
  • Est. Mortgage of $/month
  • 38 Days on Market
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Federal 30-year interest rate: 6.37% last updated on May 7, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • $8,998,000List Price
  • 5Bedrooms
  • 5Bathrooms
  • 0.51Acreage
  • 5,535Square Feet
Listed by Joan C. Bayley of Windermere Real Estate/East

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A Modern Craftsman has come available on the desirable north end! Offering 90 feet of sparkling waterfront, a boater's dream dock & an unforgettable beachside guest house, this exceptional property is set on a 1/2 acre of richly manicured grounds w/ a pancake flat lawn stretching right to the water's edge. Inside, experience timeless architectural detail...chubby triple crown molding, board-and-batten 3/4 wainscot, an absolute exquisite level of craftsmanship awaits. Entertain in the Epicurean's dream kitchen where a massive island anchors the rm, offering space for gathering, prepping & entertaining. Flow seamlessly into the Great Rm, where an entire window wall & double sets of French doors open, blurring the line between the outdoors & the in. A separate upper wing hosts an expansive office/apartment suite w/ kitchenette ideal for work, guests, or multigenerational living. Retreat to the main flr primary, a sanctuary in itself, w/ stunning views & bath area reminiscent of a Four Seasons spa. The lower level unfolds into a wonderland of space w/ 3 bdrms (1 an ensuite), exercise + big bonus/billiard rm. At the shoreline, discover a charming 1-bdrm beachhouse w/ upper view loft that could be the perfect music rm, office or art studio. Control 4 smart home. 3 laundry rms. 5 bdrm/4.5 bth, 5,535 sf main house, 1 bdrm/1bth, 950 sf casita. With a 3-car garage, generous auto court & newer boat ready dock, you'll never want to leave. Welcome home to the ultimate in wtrfrnt living!

Property Details of 4102 100th Avenue SE

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Listing data courtesy of NWMLS as provided by MLS Grid as of May 14, 2026 6:32 PM EDT . All data is obtained from various sources and has not been, and will not be, verified by broker or NWMLS. All information should be independently reviewed and verified for accuracy.  Properties may or may not be listed by the office/agent presenting the information. Supplied Open House Information is subject to change without notice. Many homes contain recording devices, and buyers should be aware they may be recorded during a showing. Listing data shown with the three tree icon are provided courtesy of NWMLS. Some IDX listings have been excluded from this website. IDX information is provided exclusively for consumers’ personal non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.  The data is deemed reliable but is not guaranteed.

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