The Observatory Sun Valley, A Viceroy Resort, offers twelve single-level penthouse residences with sweeping mountain views, with only eight remaining. This top-floor, 2-bedroom residence features 2 en suite baths plus a powder room, office space, north-facing views to Griffin Butte and the Boulders, south-facing valley views, and partially exposed wood purlin ceilings. 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.
Located just off the center of the building's connecting north-south section, this 2,123-square-foot residence is one of only two remaining on the fourth and top floor. Featuring 2 bedrooms, 2 en suite baths plus a powder room, the residence offers north-facing views to Griffin Butte and the Boulders from the great room and primary bedroom, while the second bedroom enjoys southern views down the Wood River Valley. The floor plan includes a spacious kitchen, pantry, laundry room, and office space. Partially exposed wood purlin ceilings reflect the building's distinctive butterfly roof design.
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, café, restaurant, bar, ski concierge, and a state-of-the-art observatory. All conveniently located at the gateway to downtown Ketchum and just minutes from the mountain adventures Sun Valley has to offer.
New construction
$6,800,000
300 E River St E #420, Ketchum, ID 83340
2beds
2,123sqft
Condominium
Built in 2026
-- sqft lot
$-- Zestimate®
$3,203/sqft
$-- HOA
What's special
Butterfly roof designOffice spaceLaundry roomSweeping mountain viewsSouth-facing valley viewsSpacious kitchen
- 4 days
- 111
- 6
Zillow last checked:
Listing updated:
Listed by:
Burnett Properties 208-720-0906,
Keller Williams Sun Valley Southern Idaho
Source: Sun Valley BOR MLS,MLS#: 26-335090
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 2
- Bathrooms: 3
- Full bathrooms: 2
- 1/2 bathrooms: 1
Heating
- Has Heating (Unspecified Type)
Features
- Flooring: Wood
Interior area
- Total structure area: 2,123
- Total interior livable area: 2,123 sqft
- Finished area above ground: 2,123
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: $3,203/sqft
- Date on market: 11/6/2026
- Inclusions: Stack W/D, Refrigerator, Range - Elec, Oven - Elec, Microwave, Hood Fan, 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 | $6,800,000$3,203/sqft |
Source: | ||
Public tax history
Tax history is unavailable.
Monthly payment
Est. payment
