"Materials come off the truck and get installed," says Mike Waddell, Buckhead project manager. "It's easier to deal with."

Some contractors are further eliminating waste by pre-assembling some components. On the Raleigh job, for example, the electrical contractor pre-manufactured panels and box assemblies.

The Buckhead and Raleigh SkyHouses are on similar schedules, with the North Carolina contract heading for a January completion, and the Atlanta job wrapping up in February. Both are tracking slightly ahead of their original schedules.

Looking Ahead

The SkyHouse program has proven a nearly ideal education in lean, says Batson-Cook's Thrasher, the Buckhead project executive.

"It's the perfect example of how lean can work, because it's a repeat building over and over," he says, adding: "If you don't learn from your mistakes, you're not practicing lean."

Thrasher, who calls the lean experiment a "game-changer," says he plans to implement some of the processes on other projects. "You definitely can see how it would help out a job and improve coordination."

Meanwhile, Hall, the Batson-Cook CEO and president, thinks lean represents the future for his firm.

"Lean is a cultural shift," he says. "To change a company's mind-set takes time; I don't see us going back."