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.
For sale
$2,800,000
850 Fortress Rd, Gallatin Gateway, MT 59730
3beds
3,875sqft
Single Family Residence
Built in 2002
12.84 Acres Lot
$2,660,200 Zestimate®
$723/sqft
$125/mo HOA
What's special
Mature forestPrivate primary suiteLong private driveOpen landProtected open spacesLoft office
- 18 days
- 1,638
- 161
Likely to sell faster than
Zillow last checked:
Listing updated:
Listed by:
Sandy Revisky de Leon 406-539-6316,
PureWest Real Estate Big Sky
Source: Big Sky Country MLS,MLS#: 414590Originating MLS: Big Sky Country MLS
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 3
- Bathrooms: 3
- Full bathrooms: 1
- 3/4 bathrooms: 2
Rooms
- Room types: Three Quarter Bath, Bonus Room, Bedroom, Dining Room, Kitchen, Laundry, Loft, Living Room, Office, Family Room, Wine Room
Primary bedroom
- Level: Upper
Bedroom
- Level: Main
Bedroom
- Level: Upper
Bonus room
- Level: Main
Den
- Level: Upper
Dining room
- Level: Main
Kitchen
- Level: Main
Laundry
- Level: Main
Living room
- Level: Main
Loft
- Level: Upper
Other
- Level: Main
Other
- Level: Upper
Heating
- Propane, Radiant Floor
Cooling
- Ceiling Fan(s)
Appliances
- Included: Dryer, Dishwasher, Range, Refrigerator, Washer
Features
- Wet Bar, Fireplace, Vaulted Ceiling(s), Walk-In Closet(s), Window Treatments, Sun Room
- Flooring: Hardwood, Partially Carpeted, Tile
- Windows: Window Coverings
- Basement: Bathroom,Bedroom,Egress Windows,Kitchen,Rec/Family Area,Walk-Out Access
- Has fireplace: Yes
- Fireplace features: Wood Burning
Interior area
- Total structure area: 3,875
- Total interior livable area: 3,875 sqft
- Finished area above ground: 2,363
Property
Parking
- Total spaces: 2
- Parking features: Detached, Garage
- Garage spaces: 2
Features
- Levels: Two
- Stories: 2
- Patio & porch: Covered, Deck, Patio
- Fencing: Partial
- Has view: Yes
- View description: Meadow, Mountain(s), Trees/Woods
Lot
- Size: 12.84 Acres
Details
- Additional structures: Guest House, Stable(s)
- Parcel number: RLF44975
- Zoning description: RCSF
- Special conditions: None
- Horse amenities: Stable(s)
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Cabin
- Property subtype: Single Family Residence
Materials
- Log, Shingle Siding, Shake Siding, Wood Siding
- Roof: Asphalt,Shingle
Condition
- New construction: No
- Year built: 2002
Details
- Builder name: Rocky Mountain Rustics
Utilities & green energy
- Sewer: Septic Tank
- Water: Well
- Utilities for property: Electricity Available, Propane, Phone Available, Septic Available, Water Available
Community & HOA
Community
- Security: Fire Sprinkler System, Heat Detector, Smoke Detector(s)
- Subdivision: Porcupine Park
HOA
- Has HOA: Yes
- Services included: Road Maintenance, Snow Removal
- HOA fee: $1,500 annually
Location
- Region: Gallatin Gateway
Financial & listing details
- Price per square foot: $723/sqft
- Tax assessed value: $3,699,300
- Annual tax amount: $19,380
- Date on market: 9/4/2026
- Cumulative days on market: 21 days
- Listing terms: Cash,1031 Exchange,3rd Party Financing
- Ownership: Full
- Electric utility on property: Yes
- Road surface type: Gravel, Paved
Estimated market value
$2,660,200
$2.53M - $2.79M
$5,297/mo
Price history
| Date | Event | Price |
|---|---|---|
| 9/4/2026 | Listed for sale | $2,800,000$723/sqft |
Source: Big Sky Country MLS #414590 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $19,380 +29.7% | $3,699,300 +18.9% |
| 2024 | $14,942 +6.1% | $3,111,600 |
| 2023 | $14,088 +28.5% | $3,111,600 +63.9% |
| 2022 | $10,960 -11.7% | $1,898,480 |
| 2021 | $12,407 +32.6% | $1,898,480 +18.2% |
| 2020 | $9,357 -2.9% | $1,606,279 +5.5% |
| 2019 | $9,640 +20.1% | $1,522,844 +22.5% |
| 2018 | $8,029 +6.3% | $1,243,110 |
| 2017 | $7,550 -2.6% | $1,243,110 +17.4% |
| 2016 | $7,751 | $1,058,741 |
| 2015 | $7,751 +4.4% | $1,058,741 +66.5% |
| 2014 | $7,424 +28.2% | $635,752 +11.2% |
| 2013 | $5,791 +3.1% | $571,816 +6.2% |
| 2012 | $5,618 | $538,433 |
| 2011 | -- | -- |
| 2010 | -- | -- |
| 2009 | -- | -- |
| 2008 | -- | $610,600 |
| 2007 | -- | $610,600 +12.8% |
| 2006 | -- | $541,500 |
| 2005 | -- | $541,500 |
| 2004 | -- | $541,500 +3.4% |
| 2003 | -- | $523,900 |
Find assessor info on the county website
Monthly payment
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