# 300 E River St E #310, Ketchum, ID 83340 > **TL;DR:** 2bd/3ba condo, $4,750,000 ($3169/sqft), built 2026, 1,499 sqft. > Fireplace, 2-car garage. Est. $25,404/mo. Listed 6 days. ## Property at a Glance | Attribute | Value | |-----------|-------| | Price | $4,750,000 | | Price/sqft | $3169 | | Bedrooms | 2 | | Bathrooms | 2 full, 1 half | | Square Feet | 1,499 | | Year Built | 2026 | | Stories | 1 | | Garage | 2-car | | Property Type | Condo (Condominium) | | Status | Active | | Days on Market | 6 | ## Estimated Monthly Costs | Category | Amount | |----------|--------| | Principal & Interest (20% down, 30-year at 6.5%) | $24,019 | | Estimated Insurance | $1,385 | | **Total** | **$25,404** | ## Key Amenities - Fireplace - 2-car garage ## Property Highlights - Built in 2026 - Fireplace ## 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 2-bedroom east-wing residence features 2 en suite baths plus a powder room, with the second bedroom serving as a hotel lock-off. Terrace balconies offer eastern views up Trail Creek toward Dollar Mountain and the Pioneers. 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 east wing along Leadville Avenue, this residence offers 1,499 saleable square feet with eastern views up Trail Creek, toward the northwest slope of Dollar Mountain and the Pioneer Mountains. Featuring 2 bedrooms, 2 en suite baths plus a powder room, the residence includes a great room, laundry room, and dry bar with a Sub-Zero 42-bottle undercounter wine refrigerator. Terrace balconies are located off the great room and primary bedroom, while the second bedroom serves as a hotel lock-off room. 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 #310, Ketchum, ID 83340 - **County:** Blaine - **Coordinates:** 43.678985, -114.361242 - **Google Maps:** https://www.google.com/maps?q=43.678985,-114.361242 ## 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=335084&c=propsimple) ## Photos ![300 E River St E #310 - Photo 1](http://lh.rdcpix.com/b4cca0ea9cba2dd50ca03d65fb5bde67l-f3552000840r.jpg) ![300 E River St E #310 - Photo 2](http://lh.rdcpix.com/b4cca0ea9cba2dd50ca03d65fb5bde67l-f60273731r.jpg) ![300 E River St E #310 - Photo 3](http://lh.rdcpix.com/b4cca0ea9cba2dd50ca03d65fb5bde67l-f1775438015r.jpg) ![300 E River St E #310 - Photo 4](http://lh.rdcpix.com/b4cca0ea9cba2dd50ca03d65fb5bde67l-f472522573r.jpg) ![300 E River St E #310 - Photo 5](http://lh.rdcpix.com/b4cca0ea9cba2dd50ca03d65fb5bde67l-f2774018583r.jpg) ![300 E River St E #310 - Photo 6](http://lh.rdcpix.com/b4cca0ea9cba2dd50ca03d65fb5bde67l-f3606827470r.jpg) ![300 E River St E #310 - Photo 7](http://lh.rdcpix.com/b4cca0ea9cba2dd50ca03d65fb5bde67l-f215835460r.jpg) ![300 E River St E #310 - Photo 8](http://lh.rdcpix.com/b4cca0ea9cba2dd50ca03d65fb5bde67l-f980030186r.jpg) ![300 E River St E #310 - Photo 9](http://lh.rdcpix.com/b4cca0ea9cba2dd50ca03d65fb5bde67l-f1201123385r.jpg) ![300 E River St E #310 - Photo 10](http://lh.rdcpix.com/b4cca0ea9cba2dd50ca03d65fb5bde67l-f4157809413r.jpg) ![300 E River St E #310 - Photo 11](http://lh.rdcpix.com/b4cca0ea9cba2dd50ca03d65fb5bde67l-f2135985516r.jpg) --- **MLS#:** 26-335084 | **Updated:** 2026-11-06 **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-b890655ca3fb453eb31c6e5271702a47) --- ## Structured Data ```json { "@context": "https://schema.org", "@type": "RealEstateListing", "@id": "https://www.propertysimple.ai/listing/300-e-river-st-e-ketchum-id-83340-b890655ca3fb453eb31c6e5271702a47#listing", "url": "https://www.propertysimple.ai/listing/300-e-river-st-e-ketchum-id-83340-b890655ca3fb453eb31c6e5271702a47", "name": "300 E River St E #310, 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 2-bedroom east-wing residence features 2 en suite baths plus a powder room, with the second bedroom serving as a hotel lock-off. 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