"These will be used as additional shelters for asylum claimants who are waiting to be processed by the CBSA [Canadian Border Services Agency]", said CBSA spokesperson Judith Gadbois-St-Cyr.
The Canadian military is building a camp to house the growing number of refugees crossing the USA border, officials have said.
A woman crosses into RCMP custody at Quebec-New York border.
The migrants fear the U.S.is becoming less welcoming and have made a decision to try their luck seeking asylum in Canada.
But the government of Canadian Prime Minister Justin Trudeau claims that, under the 1951 U.N. Refugee Convention, it is compelled to hear asylum claims made by people who cross the border illegally, through unofficial crossings, and make their refugee claims inland.
Patrick Lefort, a spokesman for the Canada Border Services Agency, told the Canadian Broadcasting Corporation there is now a backlog of asylum seekers at Roxham Road, a popular crossing point near Saint-Bernard-de-Lacolle, Quebec.
Canada said last week it planned to house some migrants in Montreal's Olympic Stadium.
More than 3,300 people crossed into Quebec between 1 January and 30 June.
On Wednesday, provincial authorities announced that they plan to turn the city's shuttered Royal Victoria Hospital into a shelter that will house about 320 people.
There are now about 700 asylum seekers waiting to be processed, many of them Haitians who were allowed into the United States under temporary protection status after a massive quake struck that country in 2010.