8270 SE 31st Street, Mercer Island, WA 98040 (MLS # 2549087)

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Listing provided courtesy of Northwest MLS; Real Residential

PRICE $4,098,000 dsIDX morgage calculator
BEDS 4
BATHS 3.5
HOME SIZE 4,120 sqft
LOT SIZE 9,666 sqft
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A rare offering in new construction: true one-story living + a full daylight lower level in Summerwell, a bespoke community of custom homes designed by McCullough Architects. Truly an architectural masterpiece of incomparable fit & finish, bathed in abundant natural light from sunrise to sunset. Soaring 10-14' ceilings + clerestory windows crown the open concept main level, where the dramatic great room w/fireplace + gracious dining flow seamlessly into a chef's kitchen w/pro Miele appliances, Poggenpohl cabinetry + walk-in pantry. An entertainment deck extends the main level outdoors, ideal for effortless hosting + everyday relaxation. The main floor primary suite + second bedroom/office deliver the single-level ease so rarely found in new homes - perfect for those right-sizing without compromise, multigenerational flexibility, or simply planning ahead. The lower level is made for guests + gathering: 2 private guest suites (both ensuite) offer comfort + autonomy for visitors, while a generous rec room, dedicated media room + versatile flex room stand ready for movie nights, a home gym, hobbies, or work-from-home days. Step out to the covered outdoor living area w/its own fireplace + savor true year-round indoor-outdoor living, rain or shine. Wonderfully integrated spaces, sophisticated finishes + a floorplan that simply works: single-level ease up top, room for everyone to spread out below. A one-of-a-kind residence designed for you to love where you live.

LAST UPDATED 9/30/2026 TRACT Mercer Island
YEAR BUILT 2018 COMMUNITY Mercer Island
COUNTY King STATUS Active
PROPERTY TYPE(S) Single Family

SCHOOLS
Elementary School Northwood Elem
Jr. High School Islander Mid
High School Mercer Isl High


ADDITIONAL DETAILS
AIR Central Air
AIR CONDITIONING Yes
APPLIANCES Dishwasher, Disposal, Double Oven, Dryer, Microwave, Refrigerator, Tankless Water Heater, Washer, Water Heater
AREA 510 - Mercer Island
BASEMENT Finished, Yes
CONSTRUCTION Cement Siding, Stone
EXTERIOR Garden
FIREPLACE Yes
GARAGE Attached Garage, Yes
HEAT Electric, Forced Air, Natural Gas, Radiant
HOA DUES 83.33
INTERIOR Bath Off Primary, Dbl Pane/Storm Window, Dining Room, Fireplace, Fireplace (Primary Bedroom), High Tech Cabling, Pantry, Skylight(s), Vaulted Ceiling(s), Walk-In Closet(s), Water Heater, Wine Cellar, Wired for Generator
LOT 9666 sq ft
LOT DESCRIPTION Cul-de-sac, Curbs, Dead End Street, Paved, Sidewalk
MLS STATUS Active
PARKING Attached
STORIES 1
STYLE 16 - 1 Story w/Bsmnt.
SUBDIVISION Mercer Island
TAXES 24209
UTILITIES Cable Available, Sewer Connected
VIEW Yes
VIEW DESCRIPTION Territorial
WATER Public
MORTGAGE CALCULATOR
   

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Properties with the Logo icon are courtesy of Northwest MLS.

Listings courtesy of Northwest MLS as distributed by MLS GRID. Based on information submitted to the MLS GRID as of 10/6/26 4:22 PM PDT. All data is obtained from various sources and may not have been verified by broker or MLS GRID. IDX information is provided exclusively for consumers’ personal noncommercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. 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.

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