A single-storey extension is a type of building project that adds extra space to a home by extending it outward on one level. This can be used to create additional rooms, such as a kitchen, living room, or bedroom, and is often a popular choice for homeowners looking to increase their living area without the complexity of adding multiple floors. These extensions can enhance the functionality of a home while also potentially increasing its value. They typically require planning permission, depending on local regulations, and can be designed to match the existing architecture, ensuring a seamless integration with the original structure.