Individual character
The building should have some distinctive feature that
is either architectural, historical, representative of a
particular style or form of building or make a positive
contribution to the street scene and its surroundings.
Group value
Although individual buildings are considered, in general, groups
of buildings are preferred because of their greater contribution to
the environment of the area.
State of preservation
Where possible buildings should be in their original, or near
original, condition. The greater the degree of alteration the less
suitable the property is for protection. The exception to this is
where one building in a group has been drastically altered but the
remainder are intact.
The surroundings
The quality of the building's surroundings is important, not so
much the state of upkeep as the proximity of Listed Buildings, or
other groups to be protected by a Direction.
Potential threat
Evidence that the building itself, or a similar building
elsewhere, is likely to be altered.
Suitability
The particular features or character of the building to be
protected must satisfy one of the categories controlled by an
Article 4 Direction.