120 Keystone St
Sun Valley, ID 83353
52Acres(Lot)
Sun Valley Legacy Estate & Development Masterpiece. Discover the pinnacle of mountain living at 120 Keystone St, a premier 52-acre legacy estate in the exclusive Elkhorn area of Sun Valley, Idaho. This rare dual-parcel landholding (18.6 & 33.5 acres) offers a breathtaking canvas for a private horse property or a high-end boutique residential development. Search address on YouTube for video tours. The Ultimate Equestrian & Outdoor Retreat: Bordering U.S. Forest Service land, the estate provides unparalleled private canyon access for horseback riding and hiking. Secure your legacy with senior 1883 water rights (irrigation/stock) and a high-yield well. The property features a serene pond with on-site geothermal potential, creating a year-round alpine oasis for wildlife and residents alike.
Property Details
Map
Map
What's Nearby
Nearby Areas
Features
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Lot Information
Main Square Feet: 52 Acres Lot Size Acres: 52 Lot Size Square Feet: 2265120Property Information
Subdivision: Other Source Property Type: Land MLS Area Minor: Sun Valley Property SubType: Single Family Residence
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Listing Price Information
Listing Price: $5250000 1031 Exchange, Cash, Owner Will Carry
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Tax Information
Parcel Number: RP1M0000000750 Tax Year: 2025 Annual Tax: $1206.84 Tax Legal Desc: Elkhorn 46, Keystone 41 A, Carbon Hill 74 A, SEC 15 4N 18E
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Utility Information
Underground Utilities -
Location Information
Direction: Located at the gated, private terminus of Keystone Street within the exclusive Elkhorn community of Sun Valley, Idaho. WaterSource: Well, Private
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Nearby Home Value
| Address | Estimate | Bed | Bath | Sq. Ft | Lot Size |
|---|---|---|---|---|---|
| 224 Blue Bell Rd, Sun Valley, ID, 83353 | $2,100,000 | -- | -- | -- | 4.77 Acres(Lot) |
| 92 Elkhorn Rd, Sun Valley, ID, 83353 | $2,195,000 | -- | -- | -- | 0.92 Acre(Lot) |
Similar Land To 120 Keystone St
Nearby For Sale
The data relating to real estate for sale on this website comes in part from the Internet Data exchange (IDX) program of the Sun Valley Board of REALTORS®. IDX information is provided exclusively for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Real estate listings held by brokerage firms other than ByOwner, are indicated by detailed information about them such as the name of the listing firms. Information deemed reliable but not guaranteed. Copyright ©2026 Sun Valley Board of REALTORS®. All Rights Reserved.
ByOwner last updated this listing 06/07/2026 @ 08:42
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