As mentioned in his biography, his parents were not wealthy and he grew up in a family with weak financial conditions. After completing his high school education, he enrolled at Stanford University to study journalism but ended up doing his majors in communication.

In 1977, he completed his bachelor's in science. He started his screenwriter career with the script of Mother's Day which is an American horror film in 1980. He began his career as a director in 1993 by directing "The Night We Never Met" which is an American romantic comedy film.

In the year 1982, he wrote Stuck on You! and Before the Nickelodeon: The Cinema of Edwin S. Porter. He is well known for writing TV shows and movies. His famous works are Me and Him, 100 Centre Street, The Night We Never Met and much more.

He produced “Law & Order: Criminal Intent" which is an American police procedural television drama series. The show brought him the fame as a producer in the industry. In his early days, he even worked as a showrunner, and Executive Producer of HBO's Peabody Award-winning In treatment and the FX drama Lights Out.

Warren dated Karen Hauser and eventually got married her. His wife, Karen Hauser is the research director of the Broadway League. She is also the creator of the Broadway Database.

He received the award for the author of the best play 1999 Tony Award for his play "Side Play." The Play even became the finalist of the 1999 Pulitzer Prize. His play "No Foreigners Beyond This Point" received Drama Desk Nomination, "Home Front," "Fame Takes a Holiday," "Glimmer, Glimmer and Shine” received ATCA nomination. He even wrote books such as "Mayor," "Leap of Faith," " Dark, No Sugar" and "StrayCats.” Leap of Faith" was even nominated for Outstanding Musical 2012 Drama Desk on the Broadway in New York City.

The writer is even the past President of the Writer's Guild of America, East. At present, he is the member of the Dramatists Guild Council. The writer gets his informational and humorous work published in International Herald Tribune, Rolling Stone, Village Voice, Mademoiselle, National Lampoon and BOMB magazine.

The tall and talented writer is seen active on the social media like Twitter and Instagram where he tweets about his shows and posts his personal family pictures.The screenwriter has a high net worth and is currently living in the New York City with his beloved wife and daughter. Warren Leight is currently developing programs for the Sony's television division.