Mississauga officials are working to legalize basement apartments, as the city seeks to increase the stock of affordable housing.

Heather MacDonald, Mississauga's director of strategic housing initiatives, said the city is getting more students, seniors and new immigrants.

"There's a shift in demographics in the city of Mississauga and also the stage of development that we are at, where we are no longer a green-field municipality," she said. "Opportunities for providing affordable housing will be through affordable housing stock."

Some people in the city oppose the move, with people at a public meeting on Tuesday raising concerns about the potential arrival of lodging houses and a move away from single-family homes.

But Mississauga is also responding to provincial legislation that kicks in this year, which requires all municipalities to allow basement apartments.

City officials expect to have them legalized by the fall.