About This Home

This 2-bedroom, 3-bathroom condo at 300 E River St E #335 in Ketchum, ID is listed for $5,200,000 ($3,385 per sqft). Built in 2026, the home offers 1,536 sqft of living space on a N/A lot.

Key Features

  • Built in 2026
  • Fireplace

Property Details

1 story
2 full, 1 half
2-car garage
#335
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. This 2-bedroom, 2-bath west-wing residence features full western views of Bald Mountain, including the Roundhouse and Seattle Ridge.

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 in the west wing on the Highway 75 side, this 1,536-square-foot residence features 2 bedrooms, 2 bathrooms, and full western views of Bald Mountain, the Roundhouse and Seattle Ridge.

The floor plan is virtually a mirror image of Residence 310. 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

$27,811/mo

20% down · 6.5% · 30 years

Principal$3,761
Interest$22,533
Insurance$1,517

Estimates only. Actual payments may vary.

Location

300 E River St E #335

Ketchum, ID 83340

Features & Amenities

Interior Features

Smart ThermostatAir ConditioningCustom ClosetsElevatorFire SprinklerFireplace GasLock OffMain Flr Primary BdrmWalk-in ClosetWindow CoveringsProgrmabl ThermostatLED LightsWood Flooring

Exterior Features

Assn Hot TubAssn PoolBalconyViews

Property Details

Flooring

Wood

Construction

Concrete

Heating

Heat Pump (Heating)Radiant

Questions & Answers

This 2-bedroom, 3-bathroom condo at 300 E River St E is listed at $5,200,000 ($3,385/sqft). The estimated monthly payment is $27,811 based on 20% down, a 30-year loan at 6.5% interest, estimated insurance.

Key features include: Built in 2026, Fireplace. Interior Features: Smart Thermostat, Air Conditioning, Custom Closets. 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# 26-335088· 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 #335, Ketchum, ID 83340

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