Precast stair units can be cast with or without stair landings. Stair units can be manufactured in various shapes, sizes, colors and finishes to fit the building’s aesthetic design. Abrasive metal nosings, which come in various styles and colors, can be cast in, or a cast concrete nosing created with the form can be utilized to provide anti-slip safety to treads. Hand railing connections can also be incorporated into the stair design as well.