What is an ancillary structure?

An ancillary structure refers to a secondary building that exists within the same premises as a primary or main building. This definition is relevant in various contexts, particularly in zoning laws and building regulations, where the relationship between the principal structure and supporting or supplementary structures is significant for land use planning and building codes.

For example, a garage, shed, or guest house situated on the same property as a main residence can be considered ancillary structures. They serve a supportive role to the primary building, enhancing the functionality of the property without being the main structure.

The other options do not fit this definition. A principal place of business refers to a main operational site and is not a secondary structure. A temporary structure for storage suggests a non-permanent feature that may not be built to the same codes or standards as a permanent structure, which does not encapsulate the essence of an ancillary building. Similarly, a building under construction is not classified as an ancillary structure since it does not yet serve a defined purpose in relation to a primary building.