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There is a rare sense of peace and privacy at 850 Fortress Road. A long private drive leads to a home surrounded by mature Douglas fir and pine, open land, and the quiet sounds of nature. Despite being only minutes from Big Sky’s shopping, restaurants, and amenities, the property feels worlds away from the activity of the resort. Here, the pace slows and Montana’s natural beauty takes center stage.
Privacy is one of the defining qualities of this property. Open space protects the land across from the home, preserving the expansive view and open landscape. The neighboring lot was also intentionally acquired by the owners and a neighbor to create an additional privacy buffer. The result is a peaceful setting with very little surrounding development and a true sense of seclusion.
The front porch is the heart of the property, overlooking the landscape and providing a front-row seat to Montana’s seasons. Mornings bring coffee and wildlife—deer in summer and elk in winter. Evenings offer sunsets, the calls of sandhill cranes, and hawks overhead, while the firepit provides the perfect place to gather. It is not unusual to watch bull elk spar from the property, and spring brings calves to the nursery pasture across the road.
The approximately 3,875-square-foot home is thoughtfully arranged across three levels, with three bedrooms and three bathrooms—one on each floor for exceptional privacy. The main level features a warm and inviting open living, dining, and kitchen area with views toward the Spanish Peaks, along with a sunroom opening to a spacious back deck. The upper level offers a loft office and private primary suite. The lower level includes a bedroom and bath, family room, second kitchen, sauna, wine room, storage, and large patio—ideal for guests, entertaining, or additional living space.
A beautiful guest cottage provides a sleeping area, living area, bathroom, porch, and campfire area. Above the garage, a partially completed space offers the opportunity to create a bonus room.
850 Fortress Road does not simply offer proximity to Montana—it feels like Montana. Mature forest, abundant wildlife, protected open spaces, privacy, adventure, and authentic Western character combine with convenient access to Big Sky to create a setting that is increasingly difficult to find.

• Bedrooms
  3
• Bathrooms
  3
• Sq Footage
  3875
• Acres
  12.84
• Days on Market
  14

Additional Features

• Above Grade Finished Area
  2363
• Appliances
  Dryer, Dishwasher, Range, Refrigerator, Washer
• Architectural Style
  Cabin
• Association Fee
  1500.00
• Association Fee Frequency
  Annually
• Association Fee Includes
  Road Maintenance, Snow Removal
• Association
  Yes
• Basement
  Bathroom, Bedroom, Egress Windows, Kitchen, Rec Family Area, Walk Out Access
• Bathrooms Full
  1
• Bathrooms Three Quarter
  2
• Bathrooms Total Integer
  3
• Bedrooms Total
  3
• Builder Name
  Rocky Mountain Rustics
• Building Area Source
  Public Records
• Building Area Total
  3875
• City
  Big Sky
• Construction Materials
  Log, Shingle Siding, Shake Siding, Wood Siding
• Contract Status Change Date
  2026-09-02
• Cooling
  Ceiling Fans
• Cumulative Days On Market
  9
• Directions
  Hwy 191 south past Big Sky, right on Windy Pass, right on Fortress Road. Property at top of the hill on the left.
• Documents Count
  8
• Fencing
  Partial
• Fireplace Features
  Wood Burning
• Fireplace
  Yes
• Flooring
  Hardwood, Partially Carpeted, Tile
• Garage Spaces
  2
• Garage
  Yes
• Heating
  Propane, Radiant Floor
• Heating
  Yes
• Interior Features
  Wet Bar, Fireplace, Vaulted Ceilings, Walk In Closets, Window Treatments, Sun Room
• Latitude
  45.227299
• Levels
  Two
• Listing Contract Date
  2026-09-02
• Listing Key
  1189683865
• List Price
  2800000
• Living Area
  3875
• Living Area Source
  Public Records
• Longitude
  -111.264653
• Lot Size Acres
  12.84400
• Lot Size Square Feet
  559485
• MLS Area Major
  Greater Big Sky
• MLS Area Minor
  5 C S - Gallatin Canyon South
• MLS Status
  Active
• Occupant Type
  Vacant
• Original List Price
  2800000
• Originating System Name
  S W M T
• Other Structures
  Guest House, Stables
• Ownership
  Full
• Parcel Number
  R L F44975
• Parking Features
  Detached, Garage
• Patio And Porch Features
  Covered, Deck, Patio
• Photos Count
  97
• Postal Code
  59730
• Property Sub Type
  Single Family Residence
• Property Type
  Residential
• Road Surface Type
  Gravel, Paved
• Roof
  Asphalt, Shingle
• Security Features
  Fire Sprinkler System, Heat Detector, Smoke Detectors
• Sewer
  Septic Tank
• Standard Status
  Active
• Stories
  2
• Subdivision Name
  Porcupine Park
• Tax Annual Amount
  19380.45
• Tax Legal Description
  PORCUPINE PARK SUB, S17, T07 S, R04 E, LOT 21A, ACRES 12.844, PLAT J-308B
• Tax Year
  2025
• Unparsed Address
  850 Fortress Road
• Utilities
  Electricity Available, Propane, Phone Available, Septic Available, Water Available
• View
  Meadow, Mountains, Trees Woods
• View
  Yes
• Water Source
  Well
• Window Features
  Window Coverings
• Year Built
  2002

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