The Observatory Sun Valley, A Viceroy Resort, offers twelve single-level penthouse residences with sweeping mountain views, with only eight remaining. The only 4-bedroom residence remaining features 4 en suite baths plus a powder room, an approx. 900 SF partially covered terrace, and unobstructed views of Bald Mountain, the southern hills, Wood River Valley and Dollar Mountain. 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.
West wing, Highway 75 side, south and east views with full unobstructed views of Bald Mountain, the southern hills and down the Wood River Valley, and views east to Dollar Mountain. 3,480 saleable square feet. The only four-bedroom, 4 ensuite bath and powder room, remaining for purchase. This includes an approximate 900 square foot exterior terrace assigned exclusively as limited common area. The exterior terrace is partially covered as well by the exterior "butterfly" roof that extends to the south.
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.
New construction
$11,750,000
300 E River St E #350, Ketchum, ID 83340
4beds
3,480sqft
Condominium
Built in 2026
-- sqft lot
$-- Zestimate®
$3,376/sqft
$-- HOA
What's special
Sweeping mountain viewsSingle-level penthouse residence
- 4 days
- 212
- 10
Zillow last checked:
Listing updated:
Listed by:
Burnett Properties 208-720-0906,
Keller Williams Sun Valley Southern Idaho
Source: Sun Valley BOR MLS,MLS#: 26-335089
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 5
- Full bathrooms: 4
- 1/2 bathrooms: 1
Heating
- Has Heating (Unspecified Type)
Features
- Flooring: Wood
- Has fireplace: Yes
Interior area
- Total structure area: 3,480
- Total interior livable area: 3,480 sqft
- Finished area above ground: 3,480
Property
Details
- Parcel number: RPK00000830020
- Zoning: K/T
Construction
Type & style
- Home type: Condo
- Architectural style: Contemporary,1st Floor Primary
- Property subtype: Condominium
Materials
- Concrete
Condition
- New Construction
- New construction: Yes
- Year built: 2026
Community & HOA
HOA
- Has HOA: Yes
- Services included: Insurance, Maintenance Structure, Sewer, Snow Removal, Trash, Water
- HOA name: Viceroy Hotel Group
Location
- Region: Ketchum
Financial & listing details
- Price per square foot: $3,376/sqft
- Date on market: 11/6/2026
- Inclusions: Washer, Refrigerator, Range - Elec, Oven - Elec, Microwave, Hood Fan, Dryer, Disposal
- Road surface type: Paved
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 11/6/2026 | Listed for sale | $11,750,000$3,376/sqft |
Source: | ||
Public tax history
Tax history is unavailable.
Monthly payment
Est. payment
