Sandy is the quintessential American suburb: single-family homes, shopping malls and neighborhoods intersected by big boulevards that weren’t designed with pedestrians and bicycles in mind.

But an ambitious, long-range plan seeks to retool that vision: Think villages with condos and apartments, offices and shops within walking distance, lots of green space, parks and trails. And, yes, mass transit.

Sandy officials are calling it a “suburban renaissance for the 21st century” ­— a master plan for a 30-year build-out that will yield a much more defined “suburban downtown.” It seeks to create a city center that would build on existing amenities, including Rio Tinto Stadium and the Expo Center, and attract a critical mass of residents, offices and small retail within a pedestrian-friendly framework.

“Change is going to happen,” said Tom Dolan, mayor of the city of about 87,000 residents. “If we don’t plan, it won’t be beneficial for our residents.”

Following World War II, the American dream was centered around single-family homeownership and transportation based largely on the automobile. Communities were planned around cars, backyards and shopping malls.

Suburbia made for a comfortable lifestyle on one hand, but it had downsides, too: sprawl, traffic jams and air pollution. It meant driving to school, work, shopping and recreation.

Now there’s a new trend, particularly among young adults, who want housing without yardwork that is close to recreation, entertainment, shopping and work.

“The new lifestyles will be different,” Dolan said. “We can’t continue to spread out and sprawl.”

Sandy will first focus the proposed master plan on 835 acres from 9000 South to 10600 South, between the TRAX line and Interstate 15. The new concept builds upon a general land-use plan called Wasatch Choice for 2040, developed by Envision Utah and the Wasatch Front Regional Council for Weber, Davis, Salt Lake and Utah counties.

Wasatch Choice for 2040 looks to accommodate a future with 1.4 million additional residents from Provo to Ogden — an increase of 65 percent. The plan emphasizes mass transit and higher-density housing near transit hubs. It also outlines, generally, walkable village centers with bike paths.

Sandy has contracted with the IBI Group, a multinational planning organization, to apply the general vision to a specific plan for Sandy.

“There is a great opportunity there,” said Peter Pillman, director of the IBI Group in Salt Lake City, “because there is a significant amount of open land.”

Within the 835 acres, Sandy has identified what will be two housing centers, called East Village and North Village. Pillman said those developments will include roughly 60 percent residential, 30 percent office space and 10 percent retail up to five stories high. But the concept is also intended to be developer-friendly and incorporates a lot of latitude to accommodate a changing real estate market.

“This master plan is a framework that allows it to happen when we’re ready,” Pillman said of the anticipated demand for housing and commercial space as the population grows.

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Making it happen » It’s not a done deal, yet. The master plan is subject to public hearings and requires approval by the planning commission and City Council.