Dual-Parsel Mountain
For Sale
$4,900,000
120 Keystone St, Sun Valley, ID 83353
Land, Sun Valley, ID
Property SizeContact for details
Lot Size52.00 Acres
Days on Market177
Property Features for 120 Keystone St
General Information
Property type
Land
Property subtype
Single Family Residence
Zoning
BC/R-10
Exterior features
Barn/Shed, Corral, Deeded Water Rights, Fence, Outbuildings, Views, Undergrnd Utilities, Leased Propane Tank, Horses Permitted
Fencing
Fenced
Directions
Located at the gated, private terminus of Keystone Street within the exclusive Elkhorn community of Sun Valley, Idaho.
Subdivision
Elkhorn in Sun Valley
Standard status
Active
APN
RP1M0000000750
Lot size
52.00 Acres
Taxes and HOA fees
Tax Year
2025
Tax Description
Elkhorn 46, Keystone 41 A, Carbon Hill 74 A, SEC 15 4N 18E
Tax Annual Amount
1207
Legal Description
Elkhorn 46, Keystone 41 A, Carbon Hill 74 A, SEC 15 4N 18E
Utilities
Water front features
Pond
Water front
1
Building Details
Additional Structures
Outbuilding
Listing Agency:
Keller Williams Sun Valley Southern Idaho · Keller Williams Realty
(208) 734-1991
Listed By:
James Tautkus · License #AB43803
(208) 622-7722
Added: Mar 12
Changed: Aug 29
Last Checked: Sep 4 at 6:06PM
MLS# 26-334170
Copyright © 2026 Sun Valley Board of Realtors. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
Investment Insights
Based on property information with market context.
This offering is a 52-acre, dual-parcel landholding comprising 18.6 acres and 33.5 acres, presented as a development-oriented property. The land is described as featuring a pond and senior 1883 water rights for irrigation and stock, along with a high-yield well. The site also includes stated geothermal potential associated with the pond, and it is noted as having patented mining claims.
The property is located at 120 Keystone St in Sun Valley, Idaho, in Blaine County. Public remarks state the land borders U.S. Forest Service land and provides private canyon access for horseback riding and hiking, and it is described as being minutes from Ketchum and Sun Valley Resort.
According to the provided information, utilities are already installed, including a well, septic, and buried power, and the property is zoned BC/R-10. The remarks also cite the possibility of an 18-acre U.S. Forest Service land swap and mention that recent analysis indicates potential for a third building site.
The property is located at 120 Keystone St in Sun Valley, Idaho, in Blaine County. Public remarks state the land borders U.S. Forest Service land and provides private canyon access for horseback riding and hiking, and it is described as being minutes from Ketchum and Sun Valley Resort.
According to the provided information, utilities are already installed, including a well, septic, and buried power, and the property is zoned BC/R-10. The remarks also cite the possibility of an 18-acre U.S. Forest Service land swap and mention that recent analysis indicates potential for a third building site.
Key Highlights
- Premier 52‑acre legacy estate in the exclusive Elkhorn area.
- Borders U.S. Forest Service land, providing unparalleled private canyon access.
- Senior 1883 water rights and a high‑yield well ensure water security.
Property Analytics
Property Profile
Current Use
Lease Details
Yes
Utilities to site
Yes
Water rights
Location Intelligence
Trade Area within ½ mile
5
Businesses Nearby
Explore this area
Business Placement
Demographics for 83353, ID
1,774
Population
2,391
Households
0.7
Avg Household Size
61
Median Age
74%
College-Educated
95%
High-School Grad
8.9 sq mi
ZIP Area
199
Density / Sq Mi
$95,568
Median Household Income
$37,455
Median Earnings
$2,114
Median Rent
$829,000
Median Home Value
Questions? Ask Rey
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Frequently Asked Questions
What type of property is this?
Residential land & home lot - 52-acre dual-parcel land with existing well, septic, and buried power, plus senior water rights and a pond.
Where is this residential land & home lot located?
The property is located at 120 Keystone St Sun Valley, ID.
What is the asking price?
The asking price for this property is $4,900,000.
What are key features of this property?
This property features: Premier 52‑acre legacy estate in the exclusive Elkhorn area.; Borders U.S. Forest Service land, providing unparalleled private canyon access.; Senior 1883 water rights and a high‑yield well ensure water security.
