300 E River St E #350 Ketchum, ID 83340 New

UPDATED: 11/07/2026 03:50 AM ON MARKET: 4 days on market

$11,750,000

4 Beds4.5 Baths3,480 SqFt

Key Details

Property Type Condo

Sub Type Condominium

Listing Status Active

Purchase Type For Sale

Square Footage 3,480 sqft

Price per Sqft $3,376

MLS Listing ID 26-335089

Style 1 Story,Contemporary,1st Floor Primary

Bedrooms 4

HOA Y/N Yes

Year Built 2026

Tax Year 2026

Property Sub-Type Condominium

Source Sun Valley Board of REALTORS®

Land Area 3480

Property 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.