120 Keystone St, Sun Valley, ID 83353

Sun Valley
Local realty services provided by:Better Homes and Gardens Real Estate 43° North
120 Keystone St,Sun Valley, ID 83353
$4,900,000
  • 52 Acres
  • Lots / Land
  • Active
Listed by: james tautkusjamestautkus@kw.com
Office: keller williams sun valley southern idaho
MLS#:98979014
Source:ID_IMLS

Price summary

  • Price:$4,900,000

About this home

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...

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Home facts

  • Subdivision & Development:Elkhorn Sub
  • Listing ID #:98979014
  • Added:197 day(s) ago
  • Updated:October 07, 2026 at 02:35 PM

Structure and exterior

  • Lot area:52 Acres
  • Lot Features:Borders Public Owned Land, Pasture

Utilities

  • Water:Geothermal, Well
  • Sewer:Septic Tank

Finances and disclosures

  • Price:$4,900,000
  • Tax amount:$1,206 (2025)
Property information provided by the RAFGC MLS – a service of the REALTOR® Association of Franklin & Gulf Counties.

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