120 Keystone Sun Valley, ID 83353

Active (23 Days)

$5,250,000 ^(USD)

ACRES

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Description

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. 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 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. Developer Upside & Infrastructure: Zoned BC/R-10 with patented mining claims, the land is ready for a luxury compound or multi-homesite project. Utilities (well, septic, buried power) are already installed. Significant val Search address on YouTube for video tours.

MLS #:
98979014

Taxes
$1,207(2025)

Lot Size
52 acres

Type
Land

County
Blaine County

Community
Elkhorn Sub

Listed By

James Tautkus, Keller Williams Sun Valley Southern Idaho

Source
INTERMOUNTAIN MLS IDX
Last checked Apr 15 2026 at 7:06 PM GMT+0000

Bathroom Details

Subdivision

Elkhorn Sub

Lot Information

Pasture
Borders Public Owned Land
Wooded
Views
Sloped
Over 40 Acres

Utility Information

Utilities: Sewer Connected, Electricity Connected, Phone Connected, Underground Utilities, Propane
Sewer: Septic Tank

Estimated Monthly Mortgage Payment

*Based on Fixed Interest Rate withe a 30 year term, principal and interest only

Listing price

Down payment

Interest rate

Mortgage calculator estimates are provided by Windermere Real Estate and are intended for information use only. Your payments may be higher or lower and all loans are subject to credit approval.

Disclaimer:

IDX information is provided exclusively for consumers personal, non-commercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. IMLS does not assume any liability for missing or inaccurate data. Information provided by IMLS is deemed reliable but not guaranteed. Last Updated: 4/15/26 12:06