|  | This article includes a list of general references, but it lacks sufficient corresponding inline citations .(May 2024) | 
| Category | Heritage Status Criteria [1] | 
|---|---|
| A | Buildings of national or international importance, either architectural or historic, or fine little-altered examples of some particular period, style or building type. | 
| B | Buildings of regional or more than local importance, or major examples of some particular period, style or building type which may have been altered. | 
| C | Buildings of local importance, lesser examples of any period, style, or building type, as originally constructed or moderately altered; and simple traditional buildings which group well with others in categories A and B. |