1. A property will be used as it was historically,
or be given a new use that maximizes the retention of
distinctive materials, features, spaces, and spatial
relationships. Where a treatment and use have not been
identified, a property will be protected and, if necessary,
stabilized until additional work may be undertaken.
2. The historic character of a property will be
retained and preserved. The replacement of intact or
repairable historic materials or alteration of features,
spaces, and spatial relationships that characterize
a property will be avoided.
3. Each property will be recognized as a physical
record of its time, place, and use. Work needed to stabilize,
consolidate, and conserve existing historic materials
and features will be physically and visually compatible,
identifiable upon close inspection, and properly documented
for future research.
4. Changes to a property that have acquired historic
significance in their own right will be retained and
5. Distinctive materials, features, finishes, and
construction techniques or examples of craftsmanship
that characterize a property will be preserved.
6. The existing condition of historic features will
be evaluated to determine the appropriate level of intervention
needed. Where the severity of deterioration requires
repair or limited replacement of a distinctive feature,
the new material will match the old in composition,
design, color, and texture.
7. Chemical or physical treatments, if appropriate,
will be undertaken using the gentlest means possible.
Treatments that cause damage to historic materials will
not be used.
8. Archeological resources will be protected and
preserved in place. If such resources must be disturbed,
mitigation measures will be undertaken.