The Canadian government may be championing "high-tech wood products" as building materials, but some developers -- and buyers -- still prefer concrete, because of its sustainable qualities, "acoustic privacy, building quality and return on investment." Cressey Development is building a four-story, concrete residential property. “The advantages of concrete are undeniable. There are higher construction costs but it’s a premium product and has a higher resale value," says Hani Lammam, the company's vice president. "It stands up to the test of time."