About Cassie Dellwo

Cassie is a founding member of Five Valleys Law, P.L.L.C., where her practice focuses on real estate, estate planning, and business law. Raised in the Mission Valley with an agricultural background, Cassie has a particular interest in working with farming and ranching families. She believes strongly in thoughtful planning for both life and business and has seen firsthand how effective planning can protect families, businesses, and legacies—and how the absence of planning can create unnecessary hardship.

Before founding Five Valleys Law, Cassie practiced with a North Dakota law firm in the areas of foreclosure, bankruptcy, real estate, agricultural law, oil and gas, estate planning, business law, and litigation. That broad experience taught her how to help clients navigate complex issues, manage crisis situations, and identify contract provisions that may lead to future disputes. Her litigation background continues to inform her transactional work, giving her a practical eye for risk and a clear understanding of how careful drafting can help clients avoid problems before they arise.

After nearly six years in North Dakota, Cassie returned to Montana and practiced with a mid-sized firm in Missoula before helping establish Five Valleys Law. She now focuses her practice on estate planning, business law, and real estate transactions, bringing both technical knowledge and practical judgment to her work with individuals, families, and business owners.

Cassie is also active in the legal and nonprofit communities. She is a member of the Western Montana Estate Planning Council, an organization focused on helping professionals stay current on developments and innovative strategies in estate planning. She also serves as Vice President on the Board of Directors of Disability Rights Montana, where she supports advocacy for the rights of Montanans with disabilities.

Outside the office, Cassie enjoys spending time with her immediate and extended family throughout Western Montana. When time allows, she can often be found roaming the mountainside in search of huckleberries, golfing, riding her bike, or simply enjoying life with her family.

Admission Details

• 2012, North Dakota
• 2011, U.S. District Court, District of Montana
• 2011, Montana

Law School Attended

• University of Montana School of Law, Class of 2011, J.D.

University Attended

• Jamestown College, Class of 2008, B.A.

Associations & Memberships

• Montana Bar Association
• North Dakota Bar Association
• American Bar Association
• American Agriculture Law Association
• National Academy of Elder Law Attorneys