About This Home

This 3-bedroom, 4-bathroom condo at 300 E River St E #430 in Ketchum, ID is listed for $11,950,000 ($3,430 per sqft). Built in 2026, the home offers 3,484 sqft of living space on a N/A lot.

Key Features

  • Built in 2026

Property Details

1 story
3 full, 1 half
2-car garage
#430
2026
Listing Description

The Observatory Sun Valley, A Viceroy Resort, offers twelve single-level penthouse residences with sweeping mountain views, with only eight remaining. This extraordinary northwest-corner, fourth-floor residence features 3 bedrooms, 3 en suite baths plus a powder room and office.

Enjoy views west to Bald Mountain, north from the dining room and primary suite, and south from two bedrooms. 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. This extraordinary northwest-corner residence is located on the building's fourth floor and offers 3,484 livable square feet. Featuring 3 bedrooms, 3 en suite baths plus a powder room and office space, the residence enjoys views west to Bald Mountain from the great room, north from the dining room and primary suite, and south from two bedrooms.

The spacious primary suite features an exceptionally large closet and bathroom. 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. All conveniently located at the gateway to downtown Ketchum and just minutes from the mountain adventures Sun Valley has to offer.

Monthly Cost Estimate

$63,911/mo

20% down · 6.5% · 30 years

Principal$8,642
Interest$51,783
Insurance$3,485

Estimates only. Actual payments may vary.

Location

300 E River St E #430

Ketchum, ID 83340

Features & Amenities

Interior Features

Air ConditioningElevatorFire SprinklerHigh CeilingsMain Flr Primary BdrmWalk-in ClosetWindow CoveringsLED LightsWood Flooring

Exterior Features

Assn Hot TubAssn PoolBalconyViews

Property Details

Flooring

Wood

Construction

Concrete

Heating

RadiantHeat Pump (Heating)

Questions & Answers

This 3-bedroom, 4-bathroom condo at 300 E River St E is listed at $11,950,000 ($3,430/sqft). The estimated monthly payment is $63,911 based on 20% down, a 30-year loan at 6.5% interest, estimated insurance.

Key features include: Built in 2026. Interior Features: Air Conditioning, Elevator, Fire Sprinkler. Exterior Features: Assn Hot Tub, Assn Pool, Balcony.

This property is listed by Burnett Properties.

BP

Burnett Properties

Agent at Keller Williams Sun Valley Southern Idaho

Listed by Keller Williams Sun Valley Southern Idaho · Broker phone: (208) 622-7722 · View on Broker Site

MLS# 26-335091· Source: Sun Valley Board of Realtors· 5 days on PropertySimple

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.

300 E River St E #430, Ketchum, ID 83340

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