Virtual Tour

120 Keystone Sun Valley, ID 83353 Active

UPDATED: 03/30/2026 08:48 PM ON SITE: 19 days on site

$5,250,000

52 Acres

Key Details

Property Type Vacant Land

Sub Type Build to Suit Residential

Listing Status Active

Purchase Type For Sale

Subdivision Elkhorn Sub

MLS Listing ID 98979014

HOA Y/N No

Annual Tax Amount $1,206

Tax Year 2025

Lot Size 52.000 Acres

Acres 52.0

Property Sub-Type Build to Suit Residential

Source IMLS 2

Location

State ID

County Blaine

Area Blaine-Custer County - 1525

Zoning BC/R-10 (UIB)

Direction Located at the gated, private terminus of Keystone Street within the exclusive Elkhorn community of Sun Valley, Idaho. This 52-acre landholding offers rare 'end-of-the-road' seclusion and serves as the ultimate gateway to Keystone Gulch, the Sawtooth National Forest, and Sun Valley Resort.

Interior

Fireplace No

Exterior

Fence Fence/Livestock

Community Features 2-4 Units

Utilities Available Propane,Phone Connected,Electricity Connected,Sewer Connected,Underground Utilities

Waterfront Description Pond/Stream/Creek

Street Surface Dirt,Gravel,Paved

Building

Lot Description Over 40 Acres,Pasture,Sloped,Views,Wooded,Borders Public Owned Land

Faces Located at the gated, private terminus of Keystone Street within the exclusive Elkhorn community of Sun Valley, Idaho. This 52-acre landholding offers rare 'end-of-the-road' seclusion and serves as the ultimate gateway to Keystone Gulch, the Sawtooth National Forest, and Sun Valley Resort.

Sewer Septic Tank

Water Well,Geothermal

New Construction No

Others

Senior Community No

Tax ID RP1M0000000750

Ownership Fee Simple

Acceptable Financing Cash,1031 Exchange,Owner Will Carry

Listing Terms Cash,1031 Exchange,Owner Will Carry

Virtual Tour https://youtu.be/dt4Q_1tvgq4?si=NGYdCyxonsAfk0R3

Property 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.