Some of the most affordable rental housing in Nova Scotia is rapidly becoming less so, according to Canada Mortgage and Housing Corporation data analyzed by CBC News.

This is especially pronounced in Halifax where, according to the data, the median rent for apartments built in 1979 or earlier has increased more than 40 per cent in the last four years.

Those older apartments are among the most affordable in the city, with the median rent being around $1,300 per month in 2024.

This erosion of the volume of affordable rental housing in the private market is a trend researchers have observed across Canada, said Cape Breton University associate professor Catherine Leviten-Reid.