Liam Costner is an American celebrity family member and real estate agent, widely recognized as the son of Academy Award-winning actor Kevin Costner and socialite Bridget Rooney.
Growing up away from Hollywood’s spotlight, he built a career in luxury real estate in Florida rather than following his father into acting.
Who is Liam Costner?
Liam Timothy Costner is an American real estate agent best known as the son of Kevin Costner, the Oscar-winning actor and director behind films such as Dances with Wolves and The Bodyguard.
His mother, Bridget Rooney, comes from one of the most storied families in American sports history, the Rooneys of the Pittsburgh Steelers.
Despite his high-profile family background, Liam chose a quiet professional path far from entertainment. He works as a licensed real estate agent in Northern Palm Beach County, Florida, with the Frankel Bell Group.
His identity became a matter of public record in 2002, when a court-ordered paternity test confirmed Kevin Costner as his biological father.
Since then, Kevin reportedly set up a trust fund in Liam’s name and visited him occasionally, though the two were not reported to be particularly close during Liam’s childhood years.
Liam maintains a very low public profile and does not appear to use any public social media platforms.
Early Life of Liam Costner
Liam Timothy Costner was born on November 15, 1996, in Los Angeles, California.
His birth came during a brief romantic relationship between Kevin Costner and Bridget Rooney, which began in 1995 following Kevin’s divorce from his first wife, Cindy Silva.
His mother, Bridget Rooney, is a granddaughter of Art Rooney, the founder of the Pittsburgh Steelers, and niece of the late Dan Rooney, the team’s long-time owner.
This placed Liam within two prominent American dynasties from the very start of his life. Liam grew up primarily with his mother, not with his biological father.
Bridget Rooney later married billionaire businessman William “Bill” Koch in 2005, meaning Liam’s household was one of significant wealth and privacy.
He grew up with a half-sister, Kaitlin Koch, from his mother’s marriage to Bill Koch.
Through his father’s side, he has six half-siblings: Annie, Lily, and Joe Costner from Kevin’s first marriage to Cindy Silva, and Cayden, Hayes, and Grace Costner from Kevin’s second marriage to Christine Baumgartner.
Liam Costner Age / Birthday
Liam Costner is 29 years old as of 2026, born on November 15, 1996. His zodiac sign is Scorpio, a sign often associated with determination and a strong sense of privacy.
By his late twenties, Liam had already built a stable professional career in real estate, well away from any entertainment industry ties.
Liam Costner Ethnicity and Nationality
Liam Costner is an American citizen, born in Los Angeles, California.
His ethnic background is Caucasian, with roots in both his father’s American heritage and his mother’s Irish-American family lineage tied to the Rooney dynasty.
Both sides of his family carry deep American cultural traditions, from Hollywood to professional sports.
Liam Costner Height and Weight
Liam Costner stands 5 feet 8 inches tall, which is approximately 172 centimeters or 1.72 meters. His weight is reported to be around 136 lbs, equivalent to 62 kg.
He has been described as bearing a physical resemblance to his father, with blonde hair and blue eyes, and carries himself with the kind of understated presence that fits his private lifestyle.
Liam Costner Career
Liam Costner chose a career path completely separate from his father’s world of Hollywood filmmaking.
Rather than pursuing acting, he entered the competitive luxury real estate market in Florida, working as a licensed agent with the Frankel Bell Group in Northern Palm Beach County.
Choosing Real Estate Over Hollywood
From an early age, Liam showed no interest in following Kevin Costner into the entertainment business. Kevin’s IMDb page lists decades of film and television work, yet none of it drew Liam toward the screen.
He moved toward real estate instead, a field that rewarded his preference for privacy and one-on-one client relationships over the public nature of acting.
His work at the Frankel Bell Group placed him in one of Florida’s most affluent real estate markets.
Northern Palm Beach County is home to a significant concentration of wealthy buyers and sellers, making it a demanding but lucrative environment for agents with the right network and discretion.
Work in Luxury Real Estate
Liam’s position at the Frankel Bell Group involves managing high-end residential property transactions for clients in Palm Beach County, Florida.
Reports from multiple sources describe him as handling properties for wealthy clients who value confidentiality, a skill set well-suited to someone who has navigated his own public identity with careful restraint.
His background, raised alongside billionaire Bill Koch and connected to one of Hollywood’s most famous families, gave him a natural understanding of how high-net-worth individuals think about property, privacy, and investment.
That insider perspective appears to have served him well in a market where luxury listings frequently change hands off the public radar.
His work on the National World War I Museum in Kansas City as an honorary board member, and his recording of two radio spots for Kansas City radio networks in 2011, suggest he has also engaged with civic and community causes outside his real estate focus.
Relationship with Kevin Costner and Family Legacy
The circumstances of Liam’s early years shaped much of his public story. Kevin Costner initially did not acknowledge Liam as his son.
Bridget Rooney demanded a paternity test in 2002, and when the results confirmed Kevin’s paternity, Kevin stepped up financially, reportedly setting up a trust fund in Liam’s name.
According to reports from People magazine in 2002, Kevin visited Liam “occasionally but not regularly” during his childhood.
By the time Liam became an adult, the relationship between father and son was described as private and stable, though not closely public-facing.
Liam was notably absent from Kevin’s more high-profile family appearances, even as his half-siblings attended events like the Horizon screening at the Cannes Film Festival in 2024.
Kevin Costner has publicly stated that all of his children were raised with love and care.
Liam’s choice to stay far from any film projects or public appearances alongside his father reflects his consistent preference for a life defined by his own work rather than his famous last name.
Liam Costner Net Worth
Liam Costner’s estimated net worth is $1.2 million as of 2026.
His primary income source is his career as a real estate agent with the Frankel Bell Group in Northern Palm Beach County, Florida, where luxury property commissions can be substantial.
His financial position is also supported by the trust fund that his father, Kevin Costner, reportedly established for him after the 2002 paternity confirmation.
Kevin Costner’s own net worth is publicly estimated at around $250 million, built from his long career in film and his starring role in Yellowstone.
Liam’s stepfather, Bill Koch, is a billionaire industrialist, placing Liam in a family environment of considerable wealth even as his personal earnings remain modest by comparison.
He keeps his own financial details private and does not appear in any public financial filings or investment announcements.
Liam Costner Parents
Liam Costner’s mother is Bridget Rooney, a socialite and philanthropist from the influential Rooney family, founders of the Pittsburgh Steelers NFL franchise.
Her grandfather was Art Rooney, who founded the Steelers, and her uncle was the late Dan Rooney, the team’s celebrated long-time owner and former US Ambassador to Ireland.
Kevin Costner and Bridget Rooney began dating in 1995 after Kevin’s divorce from his first wife, Cindy Silva. Their relationship was brief, and neither ever confirmed that they had been married.
Liam’s birth in November 1996 initially led to a paternity dispute, as Kevin did not immediately acknowledge the child as his own.
Bridget took legal action, filing for a court-ordered DNA test in 2002, and the results confirmed Kevin Costner as Liam’s biological father.
Following that confirmation, Kevin established a trust fund for Liam and acknowledged him publicly. Bridget Rooney married billionaire businessman William “Bill” Koch in 2005, and Koch became Liam’s stepfather.
The family lived in Palm Beach, Florida, giving Liam access to the world of high-net-worth individuals that would later shape his career in luxury real estate.
Bridget and Bill Koch also have a daughter together, Kaitlin Koch, making her Liam’s half-sister on his mother’s side.
Additionally, Liam has two half-brothers named Joe and Hayes Logan Costner.
Liam Costner Wife
Liam Costner’s relationship status is not publicly confirmed as of 2026. He has kept his personal life entirely private, and no verified reports identify a girlfriend, partner, or spouse.
No credible source has confirmed a past or present romantic relationship, as well as children. This level of privacy is consistent with everything else known about Liam.
He has no verified public social media presence, makes no public appearances, and has given no known interviews.
His choice to remain out of public view extends fully to his personal relationships, making him one of the more enigmatic celebrity children in Hollywood’s extended family circle.
Liam Costner Social Media
Liam Costner does not appear to maintain any verified public social media accounts. No confirmed Instagram, Twitter/X, TikTok, or YouTube profiles have been linked to him by credible sources.
His absence from social media is consistent with his well-documented preference for privacy.
This makes Liam a notable exception among celebrity offspring, many of whom use platforms like Instagram to build their own public profiles.
For Liam, the choice to stay offline mirrors every other aspect of a life deliberately kept out of the spotlight, from his career in real estate to his refusal to engage with entertainment media.
Conclusion
Liam Costner’s story is one of deliberate distance from the world his father inhabits, choosing a private life in real estate over the public demands of Hollywood.
As the son of Kevin Costner and Bridget Rooney, he carries two of America’s most prominent family names yet has consistently defined himself on his own terms, building a professional career in luxury real estate in Florida that reflects his own ambitions rather than his lineage.