House started his career as a child actor. Among many others credits He played a recurring guest star role as Tim on the fifth season of the Canadian TV series Degrassi: The Next Generation. House also does extensive voice over work for radio and television including animated series, Smithy on Jane and the Dragon and Ozuma on Beyblade, as well as playing Ace on the new season of Bakugan Battle Brawlers. House also is the new voice for Alejandro on Total Drama. House guest-starred on many Canadian series such as Corner Gas and Life with Derek.
In 2010/2011 he starred in the role of Todd Smith in the Canadian 13-part television series Todd and the Book of Pure Evil for Space Channel . Alex and his co-stars were awarded a Gemini Award for Best Ensemble Performance in a Comedy Program or Series in August 2011.