A rare Sun Valley offering—this gated 52-acre estate spans two parcels with on-site geothermal water, sweeping Bald Mountain views, and direct access to untouched nature. A secluded forking canyon, accessible to almost no one else, enhances its sense of privacy. The property features a high-yield 20 GPM well and buried electricity for clean aesthetics and reliability. Just minutes from Sun Valley’s core, it offers the perfect blend of seclusion and convenience. Bordering Forest Service land, it’s a haven for wildlife—elk bugling in fall, ducks in spring, and deer year-round. Enjoy iconic sunsets over the bowls from this elevated retreat. Appraised at $10.2M in 2022, the private road is now being widened and improved. To view the full video tour, search the property address on YouTube.
Property Details
Price:
$5,900,000
MLS #:
98950150
Status:
Active
Beds:
0
Baths:
0
Type:
Land
Subtype:
Build to Suit Residential
Subdivision:
0 Not Applic.
Neighborhood:
blainecustercounty1525
Listed Date:
Jun 6, 2025
Lot Size:
2,265,120 sqft / 52.00 acres (approx)
See this Listing
Schools
Interior
Exterior
Financial
Tax Year
2024
Taxes
$809
Map
Community
- Address120 Keystone St. Sun Valley ID
- Subdivision0 Not Applic.
- CitySun Valley
- CountyBlaine
- Zip Code83340
Subdivisions in Sun Valley
Market Summary
Current real estate data for Land in Sun Valley as of Nov 15, 2025
1
Land Listed
162
Avg DOM
$5,900,000
Avg List Price
Property Summary
- Located in the 0 Not Applic. subdivision, 120 Keystone St. Sun Valley ID is a Land for sale in Sun Valley, ID, 83340. It is listed for $5,900,000 and features 52 acres. To schedule a showing of MLS#98950150 at 120 Keystone St. in Sun Valley, ID, contact your Ralston Group Properties, LLC agent at 2087035666.
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Listing courtesy of Keller Williams Sun Valley Southern Idaho
Disclaimer: All data relating to real estate for sale on this page comes from the Broker Reciprocity (BR) of the Realtor Association of Intermountain Multiple Listing Service. Detailed information about real estate listings held by brokerage firms other than Ralston Group Properties, LLC include the name of the listing broker. Information provided by IMLS is deemed reliable but not guaranteed. The Broker providing this data believes it to be correct, but advises interested parties to confirm any item before relying on it in a purchase decision. Copyright 2025. Intermountain Multiple Listing Service, Inc. All rights reserved. 120 Keystone St.
Sun Valley, ID