What is a glass structure attached to the back of a house typically referred to as?

A glass structure attached to the back of a house is typically referred to as a conservatory. This type of structure is primarily constructed to serve as a space for growing plants or enjoying natural light while being sheltered from the elements. Conservatories often have a significant amount of glass in their design, allowing for maximum sunlight to enter the space, creating a warm and inviting atmosphere suited for relaxation or gardening.

In contrast, a sunroom is similar but may not always be entirely glass-enclosed; it can have walls that are partially solid as well. A deck is an outdoor platform typically made of wood or composite materials, often used for leisure activities, while a patio usually refers to a ground-level outdoor area that can be paved or decorated with outdoor furniture. Each of these options serves a distinct purpose, but the defining feature of having a glass structure is what makes the conservatory the most accurate term in this context.