By day, Martin Trainor is a CBC News video producer.

But when he's not at work, he lives in a green cube on Sumach Avenue — complete with an office space, one-and-a-half bedrooms, kitchen and bathroom.

"Everybody should live in cubes," Trainor said. "This is a great way to live. It's fun, it's functional, there's a lot of stairs — but it's good for your exercise."

A tour of Toronto's cubes2:05

The structure was built in 1996 by architect Ben Kutner and his partner Jeff Brown. It was inspired by Dutch architect Piet Blom's cube houses, built in in Rotterdam in the 1980s.

"This land, which was once considered marginal when the original developer put the cubes up, is now considered very valuable if you look at what's happening in this neighbourhood," Trainor said.

That area is home to the Pan Am Games athletes village, which is now a mixed-use community with retail condominiums and George Brown College's first student residence.

Cube house inside

Trainor says the cube is quite spacious. (Grant Linton/CBC)

But after 15 years of cubic dwelling, Trainor's future in the home is unclear. The property went up for sale last fall, and while the land is valuable, the cubes aren't worth much.

"I'm afraid it's going to go the way of Captain John's boat and Honest Ed's or the Sam the Record Man sign, unless this was preserved and saved — or at least targeted to go somewhere else," Trainor said. "I think it'd be a real shame for Toronto to lose this landmark."

Cube Rotterdam

Trainor once took a trip to Rotterdam to visit its cube community. (Martin Trainor/CBC)

Interested buyers have to sign a non-disclosure agreement, so the price of the land is under wraps.

Cube house exterior

The cubes were built in 1996. (Grant Linton/CBC)

With files from Ali Chiasson