Originally a small lakefront town in the 19th century, this neighborhood has since been transformed into new subdivisions along the waterfront. (West Rouge is the area east of Port Union Road, and Centennial (named for its main north-south street) lies between Port Union Road and the Highland Creek parklands.)

The spotlight of this neighbourhood is the paved walkway and bike path along the shore of Lake Ontario. (The Waterfront is a popular summer destination, where one can enjoy picnics, long walks, and a variety of sports fields.) The area is also surrounded by well wooded ravine valleys, and an abundance of parks filled with beautiful mature trees, Many of the houses in this neighbourhood date from the 1940’s and 50’s, and include a collection of split-level and two-storey homes, frame cottages, and ranch style bungalows. (there is 93% home ownership in this neighbourhood) In the Centennial neighbourhood, a number of newer custom-designed houses are prominent, while the Port Union neighbourhood at the southern point features a more historic flavour. The houses are infused with elements of English, Spanish and Swiss designs and emphasize decorative accents such as sweeping porches, second-storey front decks and quirky turrets, all meant to take advantage of the view overlooking Lake Ontario.

(Port Union Village is a new home subdivision located south of Lawrence Avenue. Many semi-detached and detached houses as well as townhomes flourish the area)

History: In the 1800s Port Union was a major port and fishing village which grew in importance in 1856 when the Grand Trunk Railway built a station, though the port declined in significance. In the 1960s the area underwent a housing boom, and in the 1980s the development of the former Rouge Hills Golf and Country Club added housing in the Rouge Valley. In the 1990s, the redevelopment of the Port Union waterfront added high density townhouses.