2405-2409 Carlsen 2409 Carlsen Ave, Ottawa, ON is a rental apartment building with 5 floorplans available. It is located in the Heron Park neighborhood of Ottawa. It has apartment amenities including central heat, on-site laundry, in-unit laundry, balcony, and dishwasher. It has building amenities including garage parking, on-site laundry, storage, and controlled access. Cats and dogs are allowed, making it a pet-friendly building.