$5,450,000
Est. $30,188/moPrice reduced $575,000 from the original $6,025,000 asking price
6 bd•4.5 ba•6,005 sq ft
9818 SE 42nd Place, Mercer Island, WA 98040
• Listed May 18, 2026•177 days active · 177 cumulative
Listing Broker: Windermere Real Estate Midtown; Shawna Ader; 206-251-2337; shawna@windermere.com
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Listing Broker: Windermere Real Estate Midtown; Shawna Ader; 206-251-2337; shawna@windermere.com
About this home
This beautiful home offers six bedrooms, or five with an office, with ensuite bathrooms, a gym, a wine room, and a basement. This house has thoughtful additions and upgrades beyond its original build, offering a turn key home with transitional aesthetics. A seamless, meticulous renovation has made it a calm, sophisticated retreat, with high ceilings, Karastan carpeting throughout, Wolf appliances, high-quality stairs, and a fireplace in the living area. An elevator runs from the three-car garage to the top floor. The HVAC and AV systems have been updated by Cascade Integration and High Tech Living, including a brand-new security system with 24-hour recording. Views abound, and the kitchen patio is a must-see. The backyard is level and lush, fully landscaped with Wells Medina plants and designed for privacy, with sound barriers and raised beds. Six-foot fencing with privacy trees as well as several specimens of magnolias make for a peaceful home life adjacent to two urban corridors. With easy access to East Mercer Way and I-90, the home is 15 minutes from downtown Seattle and 10 minutes from downtown Bellevue. SHARED WATERFRONT: 25% fractional waterfront ownership with private pathway to personal beach access for swimming and kayaking.
Listed by Shawna Ader • Windermere Real Estate Midtown
Listing updated: October 5, 2026 at 05:27pm
RexMont checked: moments ago
Source: NWMLS as Distributed by MLS Grid #2525750
Around this home
How much should you offer?
9818 SE 42nd Place, Mercer Island, WA 98040
Source:RexMont analysis of Northwest MLS sales data for this ZIP code plus third-party market data (RentCast). The estimates are RexMont's, not Northwest MLS listing data.
Estimates only and not guaranteed. Consult a RexMont agent for accurate, personalized guidance before making an offer. RexMont OfferEdge™ · © 2026 RexMont Real Estate. Proprietary tool.
Property details
Interior features
- Second Primary Bedroom
- Bath Off Primary
- Built-In Vacuum
- Dbl Pane/Storm Window
- Dining Room
- Elevator
- Fireplace
- High Tech Cabling
- Pantry
- Security System
- Sprinkler System
- Walk-In Closet(s)
- Water Heater
- Wet Bar
- Wine Cellar
- Wired for Generator
- Fireplace (gas)
- Daylight, Finished basement
Kitchen
- Dishwasher
- Disposal
- Double Oven
- Dryer
- Microwave
- Refrigerator
- Stove(s)/Range(s)
- Tankless Water Heater
- Washer
Bedrooms
- 6 bedrooms total
- 2 on the main level
- 4 upstairs
Bathrooms
- 1 full bathroom
- 4 three-quarter bathrooms (shower, no tub)
- 1 half bathroom
- 4.5 bathrooms total (NWMLS count)
- 2 on the main level
Layout
- 2 Stories w/Bsmnt
- 6,005 sq ft finished
Flooring
- Ceramic Tile
- Hardwood
- Carpet
Heating & cooling
- Forced Air heating
- Heat Pump heating
- Central Air cooling
Schools
Ratings via SchoolDiggerMercer Island School District
- Buyer To VerifyPublic · Grades Elementary—
- Islander Middle SchoolPublic · Grades 6-8 · State rank 9 of 51410/10
- Mercer Island High SchoolPublic · Grades 9-12 · State rank 2 of 39610/10
Assigned schools for this property per the listing's MLS data. School district boundaries change — verify the exact assigned schools with the district before purchasing.
Single-family home facts
As entered by the listing broker on Northwest MLS
Lot & site
- Topography
- Level,Partial Slope,Rolling
- Vegetation
- Garden Space
- Zoning code
- R15
- Zoning jurisdiction
- City
Systems
- Energy source
- Electric,Natural Gas
- Power production
- Electric, Natural Gas
- Water heater
- Tankless
- Power company
- Puget Sound Energy
- Water company
- City of Mercer Island
- Sewer company
- City of Mercer Island
- Gas company
- Puget Sound Energy
- Irrigation water rights
- No
- Cable connected
- Xfinity
Rooms & extras
- Spa
- Yes
- Fireplaces on main
- 1
New construction
- Builder
- Millad LLC
- Square footage source
- Builder Plans
- Lot size source
- KCR
Manufactured home
- Land lease
- No
Neighborhood mobility
Doorstep, Pedal & Station Scores
Three RexMont scores for this exact address: what is on foot, what is by bike, and what rides past the door.
Ground Truth™
The ground, the slope, the flood zone and the noise at this address
Read from public hazard, flood, terrain and noise maps for this exact home.
Address Insider™
The members' report
Commute, transit, zoning and ADU potential, internet providers and the lifestyle around the home: the nearest grocery, coffee, park, services and transit stop. One free registration opens every home on rexmont.com.
Opens with the report above.
Sales & Tax Records for 9818 SE 42nd Place
NWMLS via MLS Grid · King County AssessorEvery listing, pending, price change and closing filed on this home with the NWMLS, the county’s recorded sales, and its assessed values by tax year.
- Oct 6, 2026Price reducedNWMLS via MLS Grid · #2525750$5,450,000$908/sq ft
- May 18, 2026ListedNWMLS via MLS Grid · #2525750$6,025,000$1,003/sq ft
- Sep 22, 2023SoldNWMLS via MLS Grid · #2153883$5,200,000$866/sq ft
- Sep 14, 2023PendingNWMLS via MLS Grid · #2153883$5,475,000$912/sq ft
- Aug 22, 2023ListedNWMLS via MLS Grid · #2153883$5,475,000$912/sq ft
Mortgage payment forecast
$34,020 per month
Great rateTakes about 5 minutes & won't affect your credit
Get pre-approvedSource: RexMont estimate, not Northwest MLS listing data. Interest rates from Freddie Mac's Primary Mortgage Market Survey via FRED (Federal Reserve Bank of St. Louis). Property tax and HOA dues from the NWMLS listing where provided, otherwise estimated; insurance estimated at 0.3% of price per year.
Estimate only. Actual payment depends on credit, lender, and program. PMI not included for down payments below 20%.
Ask about this home
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Listing Broker: Windermere Real Estate Midtown; Shawna Ader; 206-251-2337; shawna@windermere.com
Market pulse
Mercer Island is a balanced market.
Supply and demand are roughly in balance. Neither side has a clear edge.
Offer insight: Homes typically sell with one offer near asking price.
List to sale price: The average home sells for about 2% below list price.
Time on market: The average home goes pending in around 61 days.
Recent sales nearby
Within 1 mile · last 6 months$1,585,000 Sold
4 days ago
4 bd•3 ba•~2,220 sq ft•Single Family
4215 Island Crest Way, Mercer Island, WA 98040
6%
Under list
65
Days on market
0.9 mi
Distance
$1,950,000 Sold
5 days ago
3 bd•2.25 ba•~2,880 sq ft•Single Family
9726 SE 40th Street, Mercer Island, WA 98040
11%
Under list
51
Days on market
0.3 mi
Distance
$6,350,000 Sold
2 weeks ago
5 bd•4.25 ba•~5,535 sq ft•Single Family
4102 100th Avenue SE, Mercer Island, WA 98040
8%
Under list
41
Days on market
0.2 mi
Distance
$1,400,000 Sold
2 weeks ago
3 bd•1.75 ba•~1,410 sq ft•Single Family
9712 SE 41st, Mercer Island, WA 98040
5%
Under list
124
Days on market
0.2 mi
Distance
$2,825,000 Sold
2 weeks ago
4 bd•3.25 ba•~3,728 sq ft•Single Family
4520 89th Avenue SE, Mercer Island, WA 98040
2%
Under list
40
Days on market
0.7 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 from MLS GRID / NWMLS · Updated Oct 2026
Information and statistics derived from Northwest Multiple Listing Service. Source: Northwest Multiple Listing Service, as distributed by MLS GRID.
MLS GRID Disclaimer
Based on information submitted to the MLS GRID as of October 13, 2026 at 7:08 PM PT (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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© 2026 Northwest Multiple Listing Service. All rights reserved.
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