the lower part of the London Port Health Authority District up to Twickenham in the upper part. Many of these are Port of London Authority (PLA) licensed moorings which also have Riparian Local Authority planning approval for their existence, whilst others have neither. North America Canada Toronto's Bluffer's Park is home to a small float home community with 24 properties within the park's marina. A city bylaw states that no more than 25 floating homes can be built. The homes in Toronto are built on concrete barges chained to the lake bottom and docked at the marina to allow residence year round. These homes have no motor and thus are not vessels. Ladner's Canoe Pass Village is a small float home community along the Fraser River near Westham Island, located along River Road in West Ladner, in the Port Guichon neighborhood. It was opened in 1985 as Canada's first legalized floating home community. United States Seattle is home to a relatively large collection of houseboats (capable of moving under their own power) or "floating homes" (houses built on floats) in several neighborhoods, particularly in Lake Union and Portage Bay. These began to appear soon after the time of first European settlement. At their peak in the first half of the 20th century, there were over 2,500 such homes in the city, not even counting seaworthy live-aboard boats. From the first, they included floating slums of shabby shacks, but gentrified houseboats go back at least to 1888 when the Yesler Way cable car reached Leschi on Lake Washington and a string of luxury summer getaways (none of them surviving today) lined the shore from there north to Madison Park. , there were about 480 floating homes on Lake Union and a lesser number elsewhere in the city. Most houseboats are designed and built for inland lakes and waterways only. Portland, Oregon also has many houseboats along both the Willamette River and the Columbia River, with the neighborhood of Hayden Island as a prominent example. Float houses are mostly used on the Pacific coast. Renting houseboats has also become popular. In addition, houseboats have been used for commerce; on the Northern Neck of Virginia, Chesapeake National Bank had a floating bank branch called the Boat 'n Bank that provided bank services to watermen. Halibut Cove, Alaska has one of the only floating post offices in the US. Mystic Island, New Jersey had