21e Avenue, Rosemont-La Petite-Patrie: property records by address

Data as of November 1, 2026 · updated every week

138 addresses on 21e Avenue in Rosemont-La Petite-Patrie, Montréal, built between 1954 and 2011, zoned residential. Open any address for its building permits, zoning, floodplain and heritage records.

The oldest building on 21e Avenue dates from 1954; half were built before 1959, and the newest in 2011. Most houses and plexes are assessed between $737,300 and $3,086,500; the typical one at $950,800. Main land use: residential (138). 49 condo buildings. 50 addresses have a serious finding, such as a notice of deterioration, a flood zone or a contaminated lot.