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.
New construction
$9,000,000
300 E River St E #300, Ketchum, ID 83340
3beds
2,818sqft
Condominium
Built in 2026
-- sqft lot
$-- Zestimate®
$3,194/sqft
$-- HOA
What's special
Sweeping mountain viewsCovered outdoor terracePowder room
- 4 days
- 154
- 17
Zillow last checked:
Listing updated:
Listed by:
Burnett Properties 208-720-0906,
Keller Williams Sun Valley Southern Idaho
Source: Sun Valley BOR MLS,MLS#: 26-335083
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 3
- Bathrooms: 4
- Full bathrooms: 3
- 1/2 bathrooms: 1
Heating
- Has Heating (Unspecified Type)
Features
- Smart Thermostat
- Flooring: Wood
- Has fireplace: Yes
Interior area
- Total structure area: 2,818
- Total interior livable area: 2,818 sqft
- Finished area above ground: 2,818
Property
Details
- Parcel number: RPK00000830020
- Zoning: K/T
Construction
Type & style
- Home type: Condo
- Architectural style: Contemporary
- 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: $3,194/sqft
- Date on market: 11/6/2026
- Inclusions: Stack W/D, Refrigerator, Range - Elec, Oven - Elec, Microwave, Disposal, Dishwasher
- 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 | $9,000,000$3,194/sqft |
Source: | ||
Public tax history
Tax history is unavailable.
Monthly payment
Est. payment
