Ad #5597488
MLS #26-335083
The Observatory Sun Valley, A Viceroy Resort, offers twelve
300 E River St E 300, Ketchum, ID 83340
$9,000,000
3Beds
4Baths
2,818Sqft
--Acres
About this property
The Observatory Sun Valley, A Viceroy Resort, offers twelve single-level penthouse residences with sweeping mountain views, with only eight remaining. This 3-bedroom residence features 3 en suite baths plus a powder room, three-sided west, south and east views, with Bedroom 3 serving as a hotel lock-off room. A covered outdoor terrace features radiant snowmelt. Adorning The Observatory Sun Valley, A Viceroy Resort, twelve single-level penthouse residences with sweeping views of Idaho's Rocky Mountains are coming to life. Only eight remain available. East wing, Leadville Avenue side, and the southernmost floor plan. 2,818 saleable square feet includes a three sided (west, south and east views), 3-bedroom, 3-ensuite bathroom floor plan with powder room, great room (kitchen, living, dining), pantry, laundry room with LG stacked washer dryer unit and cabinet storage and sink and faucet, wet bar with Sub Zero 42 bottle, undercounter wine refrigerator. This residence features Bedroom 3 as lock-off hotel room unit allowing the Residence owner the flexibility of placing this bedroom (fully furnished as a hotel room to our hotel luxury design standards) into the hotel room rental pool. The residence also features an exterior outdoor covered terrace of 247 square feet with pedestal supported porcelain pavers with radiant snowmelt that is assigned as limited common area to this residence. Ownership of these singular residences includes highly personalized service and access to a full suite of amenities, from a spa and fitness center to thermal pools, meeting spaces, cafe, restaurant, bar, ski concierge, and a state of the art observatory conveniently located at the gateway to downtown Ketchum and just minutes from all the mountain adventures Sun Valley has to offer.
Property Features
3 Beds
4 Baths
2,818 Sqft
Built in 2026
0.000 Acres
1 Story
Siding: Concrete
Membrane Roof
Has Swimming Pool
Has Fireplace
Radiant, Heat Pump (Heating)
Blaine County
Additional Photos
Contact Information
Burnett Properties
Keller Williams Sun Valley Southern Idaho
208-720-0906
Location
Listing Agent: Burnett Properties 208-720-0906
Broker: Keller Williams Sun Valley Southern Idaho 208-622-7722 Listing Site
Copyright © 2026 Sun Valley Board of Realtors. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
Broker: Keller Williams Sun Valley Southern Idaho 208-622-7722 Listing Site
Copyright © 2026 Sun Valley Board of Realtors. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
BarrierFreeHome.com
Printed Nov 7, 2026
Photo Gallery
$9,000,000
3
Beds
4
Baths
2,818
Sqft
300 E River St E 300, Ketchum, ID 83340
By contacting this agent you agree to these Terms and Conditions.
MLS# 26-335083
$9,000,000
300 E River St E 300, Ketchum, ID 83340
3
Beds
4
Baths
2,818
Sqft
--
Acres
3 Beds
4 Baths
2,818 Sqft
-- Acres
Accessibility Features
Accessible Elevator Installed
The Observatory Sun Valley, A Viceroy Resort, offers twelve
The Observatory Sun Valley, A Viceroy Resort, offers twelve single-level penthouse residences with sweeping mountain views, with only eight remaining. This 3-bedroom residence features 3 en suite baths plus a powder room, three-sided west, south and east views, with Bedroom 3 serving as a hotel lock-off room. A covered outdoor terrace features radiant snowmelt. Adorning The Observatory Sun Valley, A Viceroy Resort, twelve single-level penthouse residences with sweeping views of Idaho's Rocky Mountains are coming to life. Only eight remain available. East wing, Leadville Avenue side, and the southernmost floor plan. 2,818 saleable square feet includes a three sided (west, south and east views), 3-bedroom, 3-ensuite bathroom floor plan with powder room, great room (kitchen, living, dining), pantry, laundry room with LG stacked washer dryer unit and cabinet storage and sink and faucet, wet bar with Sub Zero 42 bottle, undercounter wine refrigerator. This residence features Bedroom 3 as lock-off hotel room unit allowing the Residence owner the flexibility of placing this bedroom (fully furnished as a hotel room to our hotel luxury design standards) into the hotel room rental pool. The residence also features an exterior outdoor covered terrace of 247 square feet with pedestal supported porcelain pavers with radiant snowmelt that is assigned as limited common area to this residence. Ownership of these singular residences includes highly personalized service and access to a full suite of amenities, from a spa and fitness center to thermal pools, meeting spaces, cafe, restaurant, bar, ski concierge, and a state of the art observatory conveniently located at the gateway to downtown Ketchum and just minutes from all the mountain adventures Sun Valley has to offer.
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Property Details
HOME DETAILS
3 Beds
4 Baths
2,818 Sqft
Built in 2026
0.000 Acres
1 Story
EXTERIOR
Siding: Concrete
Membrane Roof
Has Swimming Pool
INTERIOR
Has Fireplace
Radiant, Heat Pump (Heating)
FINANCIAL & COMMUNITY
Blaine County
See More Details
Location
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Ad Statistics
Ad Number
5597488
Viewed
6 times
Listing Status
Active
Added
Nov 06, 2026
Last Refreshed
Nov 07, 2026 05:56:37 PM
Listing Information
Data Source
Sun Valley Board of Realtors
Source Property ID
26-335083
Listing Agent: Burnett Properties 208-720-0906
Broker: Keller Williams Sun Valley Southern Idaho 208-622-7722 Listing Site
Copyright © 2026 Sun Valley Board of Realtors. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
Broker: Keller Williams Sun Valley Southern Idaho 208-622-7722 Listing Site
Copyright © 2026 Sun Valley Board of Realtors. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
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