




























$3,395,000
ActiveListing provided by Chris Tanaka, Sound Real Estate Services LLC
5
Beds
4
Baths
5,766
Sq Ft
45
DOM
About this property.
Crafted by John Buchan Homes—one of Washington State's longest-standing and most respected luxury builders with more than six decades of excellence—this exceptional Cougar Mountain estate embodies the timeless craftsmanship, architectural distinction, and enduring quality that have defined the Buchan name for generations. The crown jewel of this estate is its extraordinary outdoor setting. Situated on a beautifully landscaped 0.8-acre lot, the home offers a rare amount of flat, usable yard space that is seldom available on Cougar Mountain. Whether hosting large gatherings, enjoying outdoor recreation, or simply relaxing in a private park-like environment, the expansive grounds provide a lifestyle opportunity that truly sets this home apart. Inside, soaring ceilings, expansive gathering spaces, rich architectural details, and walls of windows create a warm yet sophisticated living experience while capturing tranquil territorial and sunset views. Designed for elevated entertaining and everyday comfort, the residence seamlessly blends elegance with livability—a hallmark of the Buchan legacy. Multiple outdoor entertaining areas extend the living experience beyond the home and into the property's remarkable grounds. The result is a residence that lives as beautifully outdoors as it does within. A rare opportunity to own one of Cougar Mountain where extraordinary outdoor living, timeless architecture, just minutes from DTWN Issaquah, and top-rated Issaquah schools.
Property details.
Features.
Interior
Exterior
Heating
Cooling
Flooring
View
Site Features
Agent information.

Schedule a Showing
Pick a day and time, and Austin will follow up to confirm.
By continuing, you consent to be contacted by Welcome to Whatcom and John L. Scott - Bellingham about this showing via call, text, or email.
Listed by: Chris Tanaka, Sound Real Estate Services LLC
Courtesy of Sound Real Estate Services LLC
Source: NWMLS, MLS#: 2519557![]()
Listing data deemed reliable but not guaranteed. Based on information submitted to the MLS GRID as of 06/28/2026, 07:45:28 PST. 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. Provided by NWMLS as distributed by MLS Grid.
IDX information is provided exclusively for consumers' personal, noncommercial use. It 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 by MLS GRID.
Any use or search of data on this website, other than by a consumer looking to purchase real estate, is prohibited.

Listed by Chris Tanaka, Sound Real Estate Services LLC
$3,395,000
Active5927 178th Court SE, Bellevue, WA 98006-5957
5
Beds
4
Baths
5,766
Sq Ft
0.80
Lot Acres
2015
Year Built
45
Days on Market
About This Property
Crafted by John Buchan Homes—one of Washington State's longest-standing and most respected luxury builders with more than six decades of excellence—this exceptional Cougar Mountain estate embodies the timeless craftsmanship, architectural distinction, and enduring quality that have defined the Buchan name for generations. The crown jewel of this estate is its extraordinary outdoor setting. Situated on a beautifully landscaped 0.8-acre lot, the home offers a rare amount of flat, usable yard space that is seldom available on Cougar Mountain. Whether hosting large gatherings, enjoying outdoor recreation, or simply relaxing in a private park-like environment, the expansive grounds provide a lifestyle opportunity that truly sets this home apart. Inside, soaring ceilings, expansive gathering spaces, rich architectural details, and walls of windows create a warm yet sophisticated living experience while capturing tranquil territorial and sunset views. Designed for elevated entertaining and everyday comfort, the residence seamlessly blends elegance with livability—a hallmark of the Buchan legacy. Multiple outdoor entertaining areas extend the living experience beyond the home and into the property's remarkable grounds. The result is a residence that lives as beautifully outdoors as it does within. A rare opportunity to own one of Cougar Mountain where extraordinary outdoor living, timeless architecture, just minutes from DTWN Issaquah, and top-rated Issaquah schools.
Property Details
Features
Interior
Exterior
Heating
Cooling
Flooring
View
Site Features
Agent Information

Schedule a Showing
Pick a day and time, and Austin will follow up to confirm.
By continuing, you consent to be contacted by Welcome to Whatcom and John L. Scott - Bellingham about this showing via call, text, or email.
Listed by: Chris Tanaka, Sound Real Estate Services LLC
Courtesy of Sound Real Estate Services LLC
Source: NWMLS, MLS#: 2519557![]()
Listing data deemed reliable but not guaranteed. Based on information submitted to the MLS GRID as of 06/28/2026, 07:45:28 PST. 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. Provided by NWMLS as distributed by MLS Grid.
IDX information is provided exclusively for consumers' personal, noncommercial use. It 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 by MLS GRID.
Any use or search of data on this website, other than by a consumer looking to purchase real estate, is prohibited.
