Edmonton Permits - Common Questions:

Can I build a two-storey garage?

Generally no. Only a one-storey garage is permitted.

Source:http://www.edmonton.ca/bylaws_licences/licences_permits/garage-or-carport-detached.aspx

 see: Building a Detached Garage Brochure (http://www.edmonton.ca/bylaws_licences/Garage_Brochure_June_2009.pdf)