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 in-unit laundry, dishwasher, central heat, on-site laundry, and balcony. It has building amenities including storage, on-site laundry, controlled access, and garage parking. Cats and dogs are allowed, making it a pet-friendly building.