$8,998,000
Est. $45,641/mo5 bd•0.5 ba•5,535 sq ft
4102 100th Avenue Se, Mercer Island, WA 98040
• Listed 2026-04-07•8 days on market
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About this home
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!
Listed by Joan C. Bayley • Windermere Real Estate/East
Listing updated: May 20, 2026 at 03:08pm
RexMont checked: moments ago
Source: NWMLS as Distributed by MLS Grid #2501508
Around this home
Schools
Ratings via SchoolDigger- School #1413581447Public · Grades PK-5 · 8.9 mi · State rank 43 of 1,0002/10
- School #1717310986Public · Grades 6-8 · 4.1 mi · State rank 687 of 1,0008/10
- School #1887451275Public · Grades 9-12 · 4.5 mi—
Schools shown are the nearest public Elementary, Middle, and High school for this property. School district boundaries change — verify the assigned school with the district before purchasing.
Sold comparable homes
5 recent nearby sales, priced between $2.75M and $5M.
$4,995,000Last sold price
4243 Shoreclub Drive, Mercer Island, WA 98040
$2,750,000Last sold price
4275 95th Avenue Se, Mercer Island, WA 98040
$3,530,000Last sold price
4419 Ferncroft Road, Mercer Island, WA 98040
Property details
Bedrooms
- 5 bedrooms total
Bathrooms
- 1 half bathroom
Mortgage payment forecast
$54,640 per month
Great rateTakes about 5 minutes & won't affect your credit
Get pre-approvedEstimate only. Actual payment depends on credit, lender, and program. PMI not included for down payments below 20%.
Lifestyle
2.2/10
Car required
Almost all errands need a car
3.8/10
Some bikeability
Minimal bike infrastructure
1.0/10
Minimal Transit
It is possible to get on a bus
Provided by Walk Score
Ask about this home
A licensed RexMont broker will get back to you, usually in under 5 minutes during business hours.
Market pulse
Mercer Island is a seller's market.
Inventory is low and competition is high. Sellers have more negotiating power.
Offer insight: Well-priced homes draw multiple offers; others sell close to asking.
List to sale price: The average home sells very close to list price.
Time on market: The average home goes pending in around 28 days.
Recent sales nearby
Within 1 mile · last 6 months$2,215,000 Sold
1 week ago
4 bd•2.5 ba•~4,440 sq ft•Single Family
9261 Se 46th Street, Mercer Island, WA 98040
8%
Under list
—
Days on market
0.8 mi
Distance
$2,785,000 Sold
2 weeks ago
4 bd•2.5 ba•~3,270 sq ft•Single Family
3712 88th Avenue Se, Mercer Island, WA 98040
3%
Under list
—
Days on market
0.9 mi
Distance
$3,900,000 Sold
4 weeks ago
4 bd•2.5 ba•~3,779 sq ft•Single Family
3406 97th Avenue Se, Mercer Island, WA 98040
2%
Under list
—
Days on market
0.6 mi
Distance
$2,950,000 Sold
5 weeks ago
5 bd•2.5 ba•~4,740 sq ft•Single Family
9810 Se 35th Place, Mercer Island, WA 98040
5%
Under list
—
Days on market
0.4 mi
Distance
$2,700,000 Sold
5 weeks ago
4 bd•2.5 ba•~2,570 sq ft•Single Family
8841 Se 37th Street, Mercer Island, WA 98040
0%
Over list
—
Days on market
0.8 mi
Distance
Closed sales from MLS GRID / NWMLS within the past 6 months, matched on property type and within 1 mile. Comps approximate.
Want a deeper read on this market?
Ask a RexMont agentMarket data via RentCast · Updated May 2026
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MLS GRID Disclaimer
Based on information submitted to the MLS GRID as of May 29, 2026 at 12:12 PM PDT (date and time MLS GRID Data was obtained). 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.
Listing information courtesy of Northwest Multiple Listing Service (NWMLS). The listing data relating to real estate for sale on this web site comes in part from the Northwest Multiple Listing Service. Real estate listings held by brokerage firms other than RexMont Real Estate are marked with the “Listing courtesy of NWMLS” designation. Information provided is for the consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
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