About Us

Yellowstone Realty began in 1972. We are dedicated to making your land, home or business purchase as simple as possible.

Our knowledge of the area is our greatest asset. This is an outdoor recreational dreamland. Hunting, fishing, hiking, camping in the summer and skiing, snowmobiling and snowshoeing are just a taste of the activities you will find here at the West gate to Yellowstone National Park. Big Sky Ski and Summer Resort is just 45 miles to the north. There are too numerous blue ribbon streams, rivers and lakes to mention within a short drive. Give us a call. We are sure you will like what you find!

Rocky Hermanson is a lifetime resident of West Yellowstone. He and his wife Ann have made the Yellowstone area their home by choice. They could not imagine living anywhere else. Rocky has worked for and been involved with many business’ in his fifty plus years here but connecting people with something they love is what brought him to Real Estate. His knowledge and commitment to the area is a valuable tool that he is happy to share with anyone.

John Costello began his West Yellowstone real estate career in 1975 with the creation of the Real Estate Agency which he owned and operated until the early nineties at which time he sold to Rob Klatt. Since that time John has continued in West Yellowstone real estate and a few years ago joined Yellowstone Realty. Over these past 40 plus years, John has been very active in the community serving on the Town Planning Board, the Town Council, Fire Chief of the Volunteer Fire Department and heading up the local Search and Rescue group for many years. John’s wife Marysue is the Executive Director of the West Yellowstone Chamber of Commerce and the two of them remain vitally active and interested in the Town as we move forward into the years to come. The past four plus decades of Real Estate experience has provided John a wealth of knowledge of all things real estate in the whole Hebgen Lake Basin. Stop by and visit with John for your real estate wants, desires and dreams.