Liam Costner, born on 15 November 1996 in Los Angeles, California, is an American real estate agent known primarily as the son of award-winning actor, producer, and director Kevin Costner and actress Bridget Rooney. Unlike his famous parents, Liam has deliberately distanced himself from the entertainment industry, opting for a career in real estate with the Frankel Bell Group in North Palm Beach County.
Early Life and Background
Liam Costner was born on 15 November 1996 in Los Angeles, California, United States. As of 2026, he is 29 years old, and his zodiac sign is Scorpio. He holds American nationality and is of white ethnicity. His current residence is in Los Angeles, California.
His parents, Kevin Costner and Bridget Rooney, dated for approximately three years but never married. They parted ways before Liam was born. Despite the separation, Bridget was confident about the paternity of her child. In a 1996 interview with New York Magazine, she stated, "I'm 110 percent sure who the father is. I'm just enjoying my pregnancy." She also added, "There was only one way to go with this. I'm 34 years old, and I'm fortunate to have a baby. I didn't even think of the A word, only the B word."
Career and Professional Life
Liam Costner works as a real estate agent for the Frankel Bell Group in North Palm Beach County. Not much is publicly known about his career, as he keeps his professional and personal life under wraps. His decision to stay out of the limelight contrasts sharply with his father's high-profile Hollywood career.
Kevin Costner, Liam's father, has earned numerous accolades throughout his career, including Academy Awards, a Primetime Emmy Award, and Golden Globe Awards. He made his acting debut in 1981 and is widely known for starring in films and television series such as Yellowstone, Dances with Wolves, and Robin Hood: Prince of Thieves.
Family and Siblings
Liam has seven half-siblings. Three older half-siblings—Annie, Lily, and Joseph—are from Kevin Costner's first marriage to Cindy Silva. He also has three younger half-siblings—Cayden Wyat, Hayes Logan, and Grace Avery—from his father's former marriage to Christine Baumgartner, which ended in 2024. Additionally, Liam has a half-sister, Kaitlin K.K. Koch, from his mother's marriage to billionaire Bill Koch.
His older half-siblings have pursued careers in the entertainment industry. Annie is a film producer, Lily began her career in acting before shifting to music, and Joe works primarily in music and sound engineering. Liam shares a strong bond with his mother, Bridget Rooney, who is known for her role in the short film Zombie or Not Zombie.
Paternity and Trust Fund
Kevin Costner requested a paternity test to confirm that Liam was his son. After confirmation, he established a sizable trust fund for Liam. This initial step marked the beginning of a supportive relationship, with Kevin publicly acknowledging all seven of his children.
Personal Life and Net Worth
Liam Costner's relationship status is single. As of 2026, he has not publicly confirmed a partner, wife, or children. He is known for keeping his personal life entirely private, consistent with his broader approach to staying out of the public eye.
Liam's net worth is not publicly confirmed by any official financial publication. However, his estimated income sources include real estate commissions from the Frankel Bell Group, a trust fund established by Kevin Costner, and potential family inheritance. Kevin Costner's estimated net worth is around $100 million in 2026, down from previous estimates of $200 million in 2025.
