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New construction
  • $9,000,000

    300 E River St E #300, Ketchum, ID 83340

    3beds
    2,818sqft
    : 
    $55,198/mo
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    Condominium
    Built in 2026
    -- sqft lot
    $-- Zestimate®
    $3,194/sqft
    $-- HOA

    What's special

    Sweeping mountain viewsCovered outdoor terracePowder room
    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.
    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#: 26-335083MLS Logo

      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

        DateEventPrice
        11/6/2026Listed for sale$9,000,000$3,194/sqft
        Source: Sun Valley BOR MLS #26-335083 Report a problem

        Public tax history

        Tax history is unavailable.

        Monthly payment

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        All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
        HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
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        Climate risks

        Neighborhood: 83340

        Getting around

        70 / 100
        Very Walkable
        51 / 100
        Bikeable

        Nearby schools

        GreatSchools rating

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