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$2,800,000

3 Beds 3 Baths 3,875 SQFT 12.84 Acres
Type: Single Family

850 Fortress Road
Big Sky, MT 59730

MLS#: 414590
Ashley Keller
Ashley Keller
Outlaw Realty
Phone: 406.407.2520
Office: 406.995.2404
Presented by: PureWest Real Estate Big Sky

Property Description

 

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.


 

Interior Features

Bedrooms

Total Bedrooms3

Bathrooms

3/4 Baths2
Total Baths3

Other Interior Features

LivingAreaSource0 sqft
Above Grade Finished Area2,363 sqft
BasementBathroom, Bedroom, Egress Windows, Kitchen, Rec/Family Area, Walk-Out Access
Basement (Y/N)Yes
Fireplace FeaturesWood Burning
Fireplace Y/NYes
FlooringHardwood, Partially Carpeted, Tile
Heating Y/NYes
Interior AmenitiesWet Bar, Fireplace, Vaulted Ceiling(s), Walk-In Closet(s), Window Treatments, Sun Room
Window FeaturesWindow Coverings

Other Rooms

Room TypeThree Quarter Bath, Bonus Room, Bedroom, Dining Room, Kitchen, Laundry, Loft, Living Room, Office, Family Room, Wine Room

General

AppliancesDryer, Dishwasher, Range, Refrigerator, Washer
Architectural StyleCabin
Assoc Fee Paid PerAnnually
Association Fee IncludesRoad Maintenance, Snow Removal
Attached Garage No
Builder NameRocky Mountain Rustics
CityBig Sky
Construction MaterialsLog, Shingle Siding, Shake Siding, Wood Siding
CoolingCeiling Fan(s)
CountyGallatin
DirectionsHwy 191 south past Big Sky, right on Windy Pass, right on Fortress Road. Property at top of the hill on the left.
Full Baths1
Garage Spaces2
Garage Y/NYes
HOAYes
HOA Fee$1500
HeatingPropane, Radiant Floor, Radiant Ceiling
Legal DescriptionPORCUPINE PARK SUB, S17, T07 S, R04 E, LOT 21A, ACRES 12.844, PLAT J-308B
LevelsTwo
Lot Size Square Feet559,484 sqft
Lot Size UnitsAcres
MLS AreaGreater Big Sky
MLS Area Minor5CS - Gallatin Canyon South
ModificationTimestamp2026-10-23T19:49:56.710-00:00
New ConstructionNo
Occupancy TypeVacant
Other StructuresGuest House, Stable(s)
OwnershipFull
Patio/Porch FeaturesCovered, Deck, Patio
PostalCityBig Sky
Property Sub Type AdditionalSingle Family Residence
Property SubtypeSingle Family Residence
Property TypeResidential
RoofAsphalt, Shingle
Security FeaturesFire Sprinkler System, Heat Detector, Smoke Detector(s)
SewerSeptic Tank
Standard StatusActive
StatusActive
Stories Count2
Subdivision NamePorcupine Park
Tax Annual Amount$19,380
Tax Year2025
UtilitiesElectricity Available, Propane, Phone Available, Septic Available, Water Available
ViewMeadow, Mountain(s), Trees/Woods
Virtual TourClick here
Year Built2002
Zoning DescriptionRCSF

Exterior

Building Area Total3,875 sqft
FencingPartial
Horse Amenities Stable(s)
HorsesY
Irrigation/Water RightsN
Lot Size Acres12.844
Lot Size Area12 sqft
Parking FeaturesDetached, Garage
Road Surface TypeGravel, Paved
Water SourceWell

Additional Details

Price History

  

Similar Properties

$2,800,000

3 Beds 3 Baths 3,875 SQFT 12.84 Acres
Type: Single Family

850 Fortress Road
Big Sky, MT 59730

MLS#: 414590
Ashley Keller
Ashley Keller
Outlaw Realty
Phone: 406.407.2520
Office: 406.995.2404