Define "accessory structure" in the context of the North Carolina Residential Code.

An accessory structure is defined as a building or other structure that is secondary to the primary structure on a property. It serves a supportive role and is typically incidental and subordinate in nature to the main building. Accessory structures include items such as garages, sheds, and gazebos, which enhance the functionality of the main dwelling without being crucial to its primary use.

In the context of the North Carolina Residential Code, this definition is important for zoning and building regulations, as it helps differentiate between primary buildings and those that are supplementary. Accessory structures must comply with specific guidelines and requirements but do not have the same level of regulatory scrutiny as the main structures.

The other options do not accurately capture the essence of an accessory structure. Definitions that imply a central role or specify a sole use for recreational purposes or hazardous materials do not align with the broader, supportive nature of accessory structures in residential settings.