[4] The series was created by Bronagh O'Hanlon and is a co-production between Brown Bag Films in Ireland and Cyber Group Studios in France.

By the end of the series, the largest rift yet grows between both worlds, and Sadie, with her newfound strengthened magical abilities, manages to close it while risking her life, encouraged by her friends' immense support.

When creator Bronagh O'Hanlon entered the animation industry, she wanted to produce cartoons starring more female protagonists.

When initially conceptualizing the series, O'Hanlon wondered why rabbits came out of magician's hats, and created a jaded wizard-mentoring rabbit who worked with the likes of Merlin and Rasputin; after a slump in his career, he started working with his complete antithesis: a young energetic teenage girl, who he would slowly, but surely, warm up to.

[8][9] The test pilot was later re-animated with the current CGI Sadie model to better demonstrate the series to clients, but this second version still has not resurfaced.

[13] To help Selina gain an interview with the actor Sloane Walker, Sadie brings the character he plays in Gilbert's favorite TV show, "Best Frenemies", Jerry, to life.

Two series of shorts were also created and released alongside the show in 2019; one simply title Sadie Sparks Shorts, which exclusively uses the 3D segments of the series with original voice-over, and a second titled Sadie Sparks: Funny Ol' Bunny, which features original 2D animated content.

In 2021, the series premiered in Finland on Yle Areena on 26 March, on Disney+ throughout western Europe on 14 May, and in Japan on Disney Channel on 4 September.