The Landmark Preservation Board may recommend designation if a property, structure, object, landscape, site, or district is found to possess one or more of the following characteristics:
- Association with persons or events of historic significance to the city, region, state or nation;
- Illustrative of historic growth and development of the city, region, state, or nation
- In the case of structures or sites, embodying distinctive characteristics of a type, period or method of construction, or representing the work of a master, or possessing unique architectural and artistic qualities, or representing a significant and distinguishable entity whose components may lack individual distinction;
- In the case of districts, possessing a unique overall quality of architectural scale, texture, form and visual homogeneity even though certain structures within the district may lack individual distinction; and
- In the case of interiors, possessing one or more of the characteristics enumerated in paragraphs 1, 2, or 3 above; and, in addition, embodying distinctive characteristics of architectural scale, form, and visual homogeneity, which are an integral part of the character of the structure in which the space is contained.
In addition to possession of one or more of the characteristics noted above, the property must retain historic integrity, or the ability to convey its significance through its location, design, setting, materials, workmanship, feeling and/or association.