About This Home

This 4-bedroom, 5-bathroom condo at 300 E River St E #350 in Ketchum, ID is listed for $11,750,000 ($3,376 per sqft). Built in 2026, the home offers 3,480 sqft of living space on a N/A lot.

Key Features

  • Built in 2026
  • Fireplace

Property Details

1 story
4 full, 1 half
2-car garage
#350
2026

Amenities

Fireplace
Listing Description

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.

Monthly Cost Estimate

$62,841/mo

20% down · 6.5% · 30 years

Principal$8,498
Interest$50,917
Insurance$3,427

Estimates only. Actual payments may vary.

Location

300 E River St E #350

Ketchum, ID 83340

Features & Amenities

Interior Features

Air ConditioningElevatorFire SprinklerFireplace GasPantryWalk-in ClosetWindow CoveringsLED LightsWood Flooring

Exterior Features

Assn Hot TubAssn PoolBalconyDeckViewsStorage Closet

Property Details

Flooring

Wood

Construction

Concrete

Outdoor Features

Deck

Heating

RadiantHeat Pump (Heating)

Questions & Answers

This 4-bedroom, 5-bathroom condo at 300 E River St E is listed at $11,750,000 ($3,376/sqft). The estimated monthly payment is $62,841 based on 20% down, a 30-year loan at 6.5% interest, estimated insurance.

Key features include: Built in 2026, Fireplace. 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# 26-335089· 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 #350, Ketchum, ID 83340

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