Judge Judith Sheindlin first announced the end of her 25-year-running show Judge Judy on The Ellen DeGeneres Show on March 2, 2020, catching CBS by surprise since the network had no firm plans for the show's conclusion.

Sheindlin and her agent Scott Koondel deliberately rejected first-run syndication in favor of first-run streaming, making Judy Justice the first standard arbitration-based reality court show to air new episodes exclusively through a streaming service.

Bailiff Petri Hawkins-Byrd, Sheindlin's longtime Judge Judy bailiff, said he only learned about the end of Judge Judy and the development of the Judy Justice spin-off when Sheindlin announced it on The Ellen DeGeneres Show.

Kevin Rasco, who plays the bailiff on Judy Justice, previously worked as the head of behind-the-scenes security on Judge Judy for its final three years, while original bailiff Byrd did not join the new show, disappointing many fans.

Sheindlin's real-life granddaughter Sarah Rose Levy, a 2022 New York Law School graduate and former Judge Judy and Hot Bench production assistant, serves as the show's legal analyst, offering a Gen Z perspective in chambers segments with her grandmother.

The first season's 120 episodes were filmed in just three months, from mid-July to October 2021, under strict COVID-19 protocols including masking, social distancing, regular testing, and vaccination requirements that added significant time to production.

Judy Justice is filmed at Culver Studios in Culver City, California, the same city where Judge Judy was filmed, while the courthouse exterior shown in the opening credits is actually the San Diego Central Courthouse.

For Judy Justice, Sheindlin abandoned her trademarked lace collar and traditional black judicial robe in favor of a burgundy robe, and initially replaced her clip-on hair bun with a natural mini-ponytail before reviving the bun in season 2.

Despite Judy Justice being the No. 1 original program on IMDb TV in its first season with over 25 million streaming hours, it was still vastly outperformed in total viewership by Judge Judy reruns on CBS.

Executive producer Randy Douthit faced allegations from sixteen former Judge Judy producers of workplace misconduct, including claims he made racially discriminatory remarks about not wanting Black people 'arguing' on the show, though most cases were dismissed or settled out of court.