In 1990 Rosemary House formed Rock Island Productions and made the award-winning short When Women are Crazy. Since then she's made over 25 films, including the feature film comedy Violet (2001) starring Mary Walsh, and NFB docs Rain, Drizzle and Fog (1998), and Salvation (2003) nominated for the Donald Brittain Award. She wrote and produced the feature film Hold Fast (2013) and the digital series Hungry Month of March (2016) for the National Film Board.
Her adaptation of Joan Clark’s novel, An Audience of Chairs, directed by Deanne Foley (Relative Happiness) received an award for Best Screenplay at the 2018 Atlantic Film Festival, among other honours for the film.
Other nominated productions include the feature doc Bloomsday Cabaret (2004), about writer James Joyce and Christopher House: Ahead of the Curve (2007), about the celebrated director of Toronto Dance Theatre (and House's brother). Hold Fast won the Audience Award at the Seoul International Youth Film Festival in 2014. House adapted the screenplay from Kevin Major's novel and Justin Simms (Away from Everywhere) directed. Hungry Month of March, co-produced with Annette Clarke of the NFB, was nominated for a 2018 Canada Screen Award for Best Digital Series.
House wrote and co-produced the documentary Puffin Patrol for CBC's Nature of Things in 2015. She developed Cougar Annie, a series for TV, with the CBC and Canada Media Fund. She is writing the feature, Game adapted from Joan Sullivan’s oral history of the 1974 Reach for the Top Championship. The film is slated for production in 2020 with producer Mary Sexton. Rosemary is also developing a series for Global called Salvage Bay.