5454 194th Avenue SE, Issaquah, WA 98027 (MLS # 2532178)

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Listing provided courtesy of Northwest MLS; Windermere Real Estate/East

PRICE $5,690,000 dsIDX morgage calculator
BEDS 4
BATHS 4.75
HOME SIZE 7,057 sqft
LOT SIZE 1.68 ac
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Known affectionately as "Issaquah Castle," this singular estate crowns its own hilltop above the forest canopy, custom-built by original owner & never before offered to the public. Panoramic views of Lake Sammamish and the Cascades unfold from every angle, while a deep stand of trees and custom gate create a sense of seclusion that feels worlds away. Through a bird's eye view, beyond the estate's orchard is the Cougar Mountain Zoo with its incredible endangered species as a reminder of the beauty of the natural world. Inside this legacy estate, pointed arches, cathedral ceilings and marble & granite details throughout establish an interior of genuine architectural distinction. At the center, a 2-story great room is wrapped in glass, with a grand stone fireplace & presided over by a mezzanine balcony with a custom spiral staircase connecting the levels. Arched doorways lead to a formal dining room beneath a gilded chandelier. Spa-caliber bathrooms feature jetted tubs, stone vessel sinks & arched windows framing the treetops. Two ADA-accessible entries open to two self-contained floors, each designed for independent living with their own professional kitchens. A large capacity wine cellar & ample parking make this an unrivaled venue for grand entertaining. A soaring 60-foot tower completes this one-of-a-kind estate. The large lot offers potential for development. Just minutes from I-90, charming Issaquah downtown, premier shopping/dining in Bellevue & direct access to Seattle.

LAST UPDATED 6/4/2026 TRACT Cougar Mountain
YEAR BUILT 1996 COMMUNITY Cougar Mountain
COUNTY King STATUS Active
PROPERTY TYPE(S) Single Family

SCHOOLS
Elementary School Sunset Elem
Jr. High School Issaquah Mid
High School Issaquah High


ADDITIONAL DETAILS
AIR None
APPLIANCES Dishwasher, Disposal, Double Oven, Dryer, Microwave, Refrigerator, Washer
AREA 500 - East Side/South of I-90
CONSTRUCTION Stone, Stucco
EXTERIOR Garden
FIREPLACE Yes
GARAGE Attached Garage, Yes
HEAT Electric, Natural Gas, Radiant
INTERIOR Dbl Pane/Storm Window, Dining Room, Fireplace, Hot Tub/Spa, Jetted Tub, Loft, Pantry, Sauna, Second Kitchen, Security System, Vaulted Ceiling(s), Walk-In Closet(s), Wet Bar, Wine Cellar, Wine/Beverage Refrigerator, Wired for Generator
LOT 1.6751 acre(s)
LOT DESCRIPTION Open Space, Paved, Secluded, Value In Land
MLS STATUS Active
PARKING Driveway, Off Street, Attached, RV Access/Parking
STYLE 25 - 3 Story
SUBDIVISION Cougar Mountain
TAXES 27104.65
UTILITIES Cable Available, Sewer Connected
VIEW Yes
VIEW DESCRIPTION City, Lake, Mountain(s), Territorial
WATER Public
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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 6/8/26 11:54 AM 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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