Allan Loeb sold his first script in 1997 to DreamWorks Pictures. It was a romantic comedy titled "The Second Time Around" he sold as a pitch for 'low-six figures against mid-six figures'.
In 1998, Allan Loeb sold a pitch for a baseball dramedy with co-writer Steven Pearl titled "The 7th Game" to United Artists for 'low-six figures against mid-six figures'.
After struggling for 3 years without a sale, Allan Loeb sold his spec script thriller "Protection" to Davis Entertainment and 20th Century Fox in 2001 for 'low-six figures against mid-six figures'.
In September 2010, Screenwriter Allan Loeb bought a two-bedroom apartment at 141 Fifth Avenue in Manhattan, New York City, for close to $3.9 million.
In 2004, Allan Loeb's career was struggling and his agent dropped him. Nearly broke, Loeb moved to New York to join Gamblers' Anonymous and to write his "Hail Mary" script. In March 2005, he returned with his script "The Only Living Boy in New York". The script became a hit within Hollywood's agency circuit and soon, Loeb was signed by CAA. While that script was being pitched around town, Loeb started writing his next script, "Things We Lost in the Fire". Then, in May 2005, "The Only Living Boy in New York" sold to Bona Fide Productions and Sony. Then in July 2005, Dreamworks purchased "Things We Lost in the Fire" from Loeb. Both scripts landed in the top four spots on the inaugural 2005 Black List of the Best Unproduced Scripts in Hollywood.
Did an unused rewrite of the script for Made of Honor (2008) in 2003.
Performed a polish of the pilot script for the series Terra Nova (2011) in 2010.
Did an uncredited set of revisions on the script for San Andreas (2015) in 2011.