Canada Lands Corp. will sell much of the land in Pleasantville to private companies as part of an ambitious redevelopment plan. (CBC)

A Crown corporation hopes to see a mix of houses, condos and apartments built on the site of a former U.S. military base in St. John's, on one of the prime undeveloped areas of the city.

Canada Lands Corp. is showcasing its plans for redeveloping Pleasantville and on Wednesday night will make a formal presentation on how it hopes the site — north of Quidi Vidi Lake, and within walking distance of downtown St. John's — can be transformed.

Project manager John Dalton said the idea behind the mixed development is to create a community within a community.

"If you get that mix, you get what you call aging in place, where someone can move in as a young couple. If they need a bigger place, they could buy a home [and] they could have children," Dalton said.

"Then, as they become empty-nesters, they could potentially move to an apartment or a condominium, and finally, at that stage of life which we're all heading, as you're getting to be … needing some assistance, we're even providing an opportunity of assisted living."

The U.S. military developed much of the land as Fort Pepperrell, which was built during the Second World War.

Project manager John Dalton said he hopes a mix of residents will make Pleasantville their home in the years to come. (CBC)

Years later, the site was turned over to the Canadian government, which used part of it as Canadian Forces Station St. John's and other parts as offices for government departments. The former Janeway children's hospital was built there in the 1960s, but was demolished earlier this year.

Canada Lands Corp.'s plan of divesting the lands, now considered surplus, will see about 960 residential units built, including single-family and multi-unit homes and hundreds of condominiums. The plan also includes two 10-storey towers that would be built along Logy Bay Road.

Housing advocates and social agencies have long called for a greater mix of housing in the central part of St. John's, particularly for affordable housing for low- and middle-income earners.

The plan will come under a lot of scrutiny from residents of neighbouring streets, including Alister Eaton, who lives on Ross Road.

"That's probably the best site left in metropolitan St. John's. I mean, I grew up here," said Eaton, adding that the Pleasantville site has had historic attachments, including a training site for the Royal Newfoundland Regiment in 1914.

"It's always been a sort of historic place and I think done properly it will be great."

The plan incorporates a $101-million upgrade planned for Canadian Forces Station St. John's, which is relocating to one corner of the land it currently occupies.

Canada Lands Corp. will make a formal presentation to area residents on Wednesday at 7 p.m. at the Royal Canadian Legion on The Boulevard.