Calgary has many homes with secondary/basement suites or backyard/carriage suites.
City of Calgary: all suites require a building permit.
legalize an existing secondary suite, adding a new suite or building a backyard suite
The City of Calgary is waiving fees for the development permit and secondary suite registry for all secondary and backyard suites until December 31, 2021.
All secondary and backyard suites must be on City of Calgary suite registry by December 31, 2021. In January 2022, the city will reinstate fees for the development permit and suite registry.