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Minimum cost - $20 per square foot. Maximum cost - $100 per square foot. The cost of terrazzo flooring is directly related to the materials out of which the floor itself is made. Since terrazzo flooring is made out of little chips and pieces of other materials, some terrazzo flooring costs more than others.
1 Terrazzo tiles come in a wide variety of color and texture combinations, and can cost $6-$20 or more a square foot, or $2,400-$8,000 for 20'x20'. 2  Professional installation can add another $6-$10 a square foot, bringing total costs for labor and materials to $12-$30 or more a square foot, or $4,800-$12,000 for 20'x20'.dditional costs: 1  Typically, a firm bed or flooring foundation is laid out (such as a concrete slab). 2  Then, grid sections (usually about 3 square feet each, or in a custom pattern) are laid out and attached to the foundation. 3  The terrazzo mixture (chips plus concrete or resin) is poured over the grid.