# 300 E River St E #430, Ketchum, ID 83340 > **TL;DR:** 3bd/4ba condo, $11,950,000 ($3430/sqft), built 2026, 3,484 sqft. > 2-car garage. Est. $63,911/mo. Listed 6 days. ## Property at a Glance | Attribute | Value | |-----------|-------| | Price | $11,950,000 | | Price/sqft | $3430 | | Bedrooms | 3 | | Bathrooms | 3 full, 1 half | | Square Feet | 3,484 | | Year Built | 2026 | | Stories | 1 | | Garage | 2-car | | Property Type | Condo (Condominium) | | Status | Pending | | Days on Market | 6 | ## Estimated Monthly Costs | Category | Amount | |----------|--------| | Principal & Interest (20% down, 30-year at 6.5%) | $60,426 | | Estimated Insurance | $3,485 | | **Total** | **$63,911** | ## Key Amenities - 2-car garage ## Property Highlights - Built in 2026 ## Description ### Agent 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. ## Location - **Address:** 300 E River St E #430, Ketchum, ID 83340 - **County:** Blaine - **Coordinates:** 43.678984, -114.361241 - **Google Maps:** https://www.google.com/maps?q=43.678984,-114.361241 ## Listing Agent - **Name:** Burnett Properties - **Brokerage:** Keller Williams Sun Valley Southern Idaho - **Broker Phone:** (208) 622-7722 - **Listing URL:** [View original listing](https://www.realtor.com/realestateandhomes-detail/300-E-River-St_Ketchum_ID_83340_M99517-02014?f=listhub&s=SVBORID-26&m=335091&c=propsimple) ## Photos ![300 E River St E #430 - Photo 1](http://lh.rdcpix.com/3be78b90d0cb53ab2980a57f8cf76fe1l-f3552000840r.jpg) ![300 E River St E #430 - Photo 2](http://lh.rdcpix.com/3be78b90d0cb53ab2980a57f8cf76fe1l-f60273731r.jpg) ![300 E River St E #430 - Photo 3](http://lh.rdcpix.com/3be78b90d0cb53ab2980a57f8cf76fe1l-f980030186r.jpg) ![300 E River St E #430 - Photo 4](http://lh.rdcpix.com/3be78b90d0cb53ab2980a57f8cf76fe1l-f2518331464r.jpg) ![300 E River St E #430 - Photo 5](http://lh.rdcpix.com/3be78b90d0cb53ab2980a57f8cf76fe1l-f1865536191r.jpg) ![300 E River St E #430 - Photo 6](http://lh.rdcpix.com/3be78b90d0cb53ab2980a57f8cf76fe1l-f690843927r.jpg) ![300 E River St E #430 - Photo 7](http://lh.rdcpix.com/3be78b90d0cb53ab2980a57f8cf76fe1l-f2774018583r.jpg) ![300 E River St E #430 - Photo 8](http://lh.rdcpix.com/3be78b90d0cb53ab2980a57f8cf76fe1l-f4157809413r.jpg) ![300 E River St E #430 - Photo 9](http://lh.rdcpix.com/3be78b90d0cb53ab2980a57f8cf76fe1l-f2135985516r.jpg) ![300 E River St E #430 - Photo 10](http://lh.rdcpix.com/3be78b90d0cb53ab2980a57f8cf76fe1l-f1201123385r.jpg) --- **MLS#:** 26-335091 | **Updated:** 2026-11-07 **Source:** listhub *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.* [View on PropertySimple](https://www.propertysimple.ai/listing/300-e-river-st-e-ketchum-id-83340-039ce0055eaa4d878c3ff9a3ead425cc) --- ## Structured Data ```json { "@context": "https://schema.org", "@type": "RealEstateListing", "@id": "https://www.propertysimple.ai/listing/300-e-river-st-e-ketchum-id-83340-039ce0055eaa4d878c3ff9a3ead425cc#listing", "url": "https://www.propertysimple.ai/listing/300-e-river-st-e-ketchum-id-83340-039ce0055eaa4d878c3ff9a3ead425cc", "name": "300 E River St E #430, Ketchum, ID 83340", "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. 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