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$5,900,000
142 Days On Site

120 Keystone St.
Sun Valley, ID 83340

For Sale|Land|Active
Subdivision:
0 Not Applic.
County:
Blaine
Listing courtesy of Keller Williams Sun Valley Southern Idaho jamestautkus@kw.com
120 Keystone St.120 Keystone St.120 Keystone St.120 Keystone St.
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Monthly Payment (Est.)

$26,918
Calculator powered by Showcase IDX, a Constellation1 Company. Copyright ©2025 Information is deemed reliable but not guaranteed.

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.

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Listing Snapshot
Price 
$5,900,000
Days On Site 
142 Days
Bedrooms 
N/A
Inside Area (SqFt) 
N/A
Total Baths 
N/A
Full Baths 
N/A
Partial Baths 
N/A
Lot Size 
52 Acres
Year Built 
N/A
MLS® Number 
98950150
Status 
Active
Property Tax 
$809.1
HOA/Condo/Coop Fees 
N/A
Sq Ft Source 
N/A
Friends & Family
Recent Activity
4 weeks agoListing updated with changes from the MLS®
3 months agoPrice changed to $5,900,000
5 months agoListing first seen on site
General Features
Acres 
52
Sewer 
Septic Tank
Utilities 
Natural Gas Not AvailablePhone ConnectedElectricity ConnectedSewer ConnectedUnderground Utilities
Water Source 
Well
Zoning 
BC/R-10
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Exterior Features
Fencing 
Partial
Lot Features 
SlopedViewsWaterfront
Waterfront 
Yes
Waterfront Features 
Waterfront
Community Features
Financing Terms Available 
Cash
MLS Area 
Blaine-Custer County - 1525
Roads 
Dirt
Listing courtesy of Keller Williams Sun Valley Southern Idaho jamestautkus@kw.com



Listing information is provided by Participants of the Intermountain Multiple Listing Service. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed. Copyright 2025, Intermountain Multiple Listing Service.
Last checked: 2025-10-26 11:26 PM UTC

Neighborhood & Commute
Source: Walkscore
Disclosure: Community information and market data powered by Constellation Data Labs. Information is deemed reliable but not guaranteed.
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