There are several types of staircases commonly used in homes: Straight Staircase: The most common and straightforward design, consisting of a straight flight of stairs from one level to another. L-Shaped Staircase: A 90-degree turn, typically consists of two straight flights connected at a landing. U-Shaped Staircase: Two parallel flights of stairs that make a 180-degree turn, often with a landing between them. Spiral Staircase: A circular design and typically occupies less space. It consists of individual steps that form a spiral shape around a central pole or column. Floating Staircase: Created using treads attached to a wall or concealed structural support, without visible risers or supports.