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Most people searching for Liam Costner already know one thing about him: his father is Kevin Costner. What they find, though, is a story that goes much deeper than a famous last name. Born into a collision of Hollywood stardom, NFL ownership, and billionaire wealth, Liam has quietly built a life on his own terms — as a real estate agent in Palm Beach, Florida, far from any film set. This article covers everything verified about Liam Costner in 2026: his birth, the paternity controversy, his blended family, his career at Frankel Bell Group, his net worth, and why his story stands out among celebrity children.
Quick facts about Liam Costner
| Detail | Information |
| Full name | Liam Timothy Costner |
| Date of birth | November 15, 1996 |
| Age (2026) | 29 |
| Birthplace | Los Angeles, California |
| Father | Kevin Costner |
| Mother | Bridget Rooney |
| Stepfather | Bill Koch (billionaire businessman) |
| Nationality | American |
| Education | Oxbridge Academy (primary and secondary); higher education details private |
| Career | Real estate agent, Frankel Bell Group, Northern Palm Beach County |
| Estimated net worth | $1 million to $8 million |
| Relationship status | Single (not publicly dating as of 2026) |
| Social media | No public accounts |
| Current location | Palm Beach, Florida |
Who is Liam Costner?
Liam Timothy Costner is the son of Academy Award-winning actor Kevin Costner and socialite Bridget Rooney. He was born on November 15, 1996, in Los Angeles, and grew up at the intersection of three enormously powerful American families. His father is one of Hollywood’s most decorated figures. His mother is part of the Rooney family, who own the Pittsburgh Steelers. And after his mother married Bill Koch, a billionaire energy entrepreneur, Liam’s family circle expanded even further.
Despite all of that, Liam has never acted in a film or television show, holds no verified social media presence, and gives no press interviews. He works as a real estate agent in Palm Beach County, Florida, handling high-end properties at Frankel Bell Group. In 2026, he remains one of the rare celebrity children who has genuinely stepped back from the spotlight rather than simply claiming to.
The paternity controversy and early family dynamics
Liam’s entry into the world was not without drama. Kevin Costner and Bridget Rooney had a brief relationship in the mid-1990s, shortly after Kevin’s 1994 divorce from his first wife, Cindy Silva. When Bridget became pregnant, Kevin requested a paternity test before acknowledging Liam as his son.
In 2002, People magazine reported publicly on the situation. DNA testing confirmed Kevin as Liam’s biological father, and he accepted that responsibility fully. He established a trust fund for Liam and worked with Bridget toward co-parenting arrangements. Bridget later married Bill Koch, giving Liam a stepfather whose personal fortune is reported in the billions.
That combination of circumstances means Liam grew up with financial stability from multiple directions. What makes his story worth paying attention to is what he chose to do with that position.
Liam Costner’s education and early life
Liam attended Oxbridge Academy for his primary and secondary schooling. Oxbridge Academy is a private school in West Palm Beach, Florida, known for its academic focus. Details about his higher education remain private, though reports suggest he concentrated on business and finance, which aligns directly with his real estate career.
Growing up, he had access to every advantage that celebrity and generational wealth provide:
- Private schooling in Florida
- A father who maintained contact and financial support
- A mother connected to both NFL ownership and a billionaire household
- Half-siblings in both the entertainment and sports worlds
Yet his formative choices pointed consistently away from fame and toward professional discipline.
His real estate career at Frankel Bell Group
Rather than heading to Hollywood, Liam Costner became a licensed real estate agent. He works at Frankel Bell Group, a real estate agency operating in Northern Palm Beach County, Florida. Palm Beach is one of the wealthiest real estate markets in the United States, home to some of the country’s most expensive residential properties.
His work in that market suits him for a few specific reasons:
- Client discretion matters enormously in Palm Beach. Wealthy buyers and sellers value agents who are not chasing publicity.
- Family background gave him an intuitive understanding of luxury property needs.
- No reliance on his name — he built his professional reputation through transaction performance, not through leveraging “Costner” as a marketing tool.
Working in high-end real estate requires consistent skill, trust-building, and market knowledge. It is not a field where a famous surname closes deals. Liam has operated in it quietly and, by available accounts, effectively.
Read more: Madison Alworth Net Worth: Career, Biography, and Rise in Financial Journalism
Liam’s siblings and the blended Costner family
Kevin Costner has seven children from three different relationships, making Liam part of a large and varied family structure. His siblings include:
| Sibling | Mother | Career |
| Annie Costner | Cindy Silva | Film producer |
| Lily Costner | Cindy Silva | Actress |
| Joe Costner | Cindy Silva | Actor |
| Liam Costner | Bridget Rooney | Real estate |
| Cayden Costner | Christine Baumgartner | Private |
| Hayes Costner | Christine Baumgartner | Private |
| Grace Costner | Christine Baumgartner | Private |
Among his older half-siblings, Annie, Lily, and Joe each work in entertainment. Liam is notably the only child from Kevin’s relationships to have chosen a career entirely outside the industry. His three younger half-siblings from Kevin’s second marriage to Christine Baumgartner are still growing up, with little public information available about their paths.
Liam Costner’s net worth in 2026
Liam’s estimated net worth sits between $1 million and $8 million as of 2026, according to multiple sources. Some outlets have published wildly inflated figures, including claims of $800 million, which have no factual basis. The realistic range reflects:
- Trust fund income established by Kevin Costner after paternity was confirmed
- Real estate commissions from transactions at Frankel Bell Group
- Family wealth access through both the Rooney family and the Koch household
He does not live visibly. No public property records, no luxury purchases covered in press, no documented extravagance. His lifestyle in Palm Beach is described consistently as comfortable and low-key.
Final thoughts
Liam Costner’s story is worth knowing precisely because it refuses to follow the expected script. He had every resource a person could want, a name that opens rooms, and family connections that span Hollywood, professional football, and billion-dollar enterprise. He chose Palm Beach real estate, client discretion, and a life without social media.
That is not a default outcome for someone in his position. It reflects a clear, sustained set of choices. What stands out most, looking at the full picture in 2026, is not what Liam avoided but what he built: a professional identity grounded in something other than inherited fame. That is harder than it sounds, and he seems to have managed it without making a show of it either.
For those curious about where celebrity children go when they quietly step away, Liam is one of the clearest examples available. The Costner family, which has always balanced Hollywood ambition with real family complexity, appears to have given him the foundation to find that path. Kevin Costner, his father, built one of the most recognized careers in American cinema. Liam, by contrast, is building something smaller and entirely his own.
Frequently asked questions about Liam Costner
How old is Liam Costner in 2026?
Liam was born on November 15, 1996, which makes him 29 years old as of mid-2026. He turns 30 in November 2026.
Who is Liam Costner’s mother?
His mother is Bridget Rooney, a member of the Rooney family that owns the Pittsburgh Steelers NFL franchise. She later married billionaire businessman Bill Koch, making him Liam’s stepfather.
Does Liam Costner have social media?
No. As of 2026, Liam has no verified public accounts on Instagram, Facebook, X (formerly Twitter), or any other platform. His decision to stay off social media is consistent with his broader commitment to privacy.
Where does Liam Costner work?
He works as a real estate agent at Frankel Bell Group, which operates in Northern Palm Beach County, Florida. He specializes in high-end residential properties in one of America’s most expensive real estate markets.
Why did Kevin Costner request a paternity test?
According to a 2002 People magazine report, Kevin Costner requested a DNA test before acknowledging Liam as his son. The test confirmed his paternity. He subsequently set up a trust fund for Liam and maintained a co-parenting relationship with Bridget Rooney.
Has Liam Costner ever appeared in any films or TV shows?
No. Despite being the son of one of Hollywood’s most accomplished actors, Liam has never appeared in any film or television production. His career has been entirely in real estate.
What is Liam Costner’s relationship with Kevin Costner like today?
The two are understood to have a respectful and supportive relationship, though Liam keeps personal details private. Kevin has spoken publicly about being a committed father to all his children. Liam’s acceptance of family support without converting it into public attention suggests a stable dynamic.
