The Secretary of the Interior’s Standards for the Treatment of Historic Properties are common sense principles in non-technical language. They were developed to help protect our nation’s irreplaceable cultural resources by promoting consistent preservation practices. The Standards may be applied to all properties listed in the National Register of Historic Places: buildings, sites, structures, objects, and districts.

Secretary of the Interior’s Standards’ Homepage: www.nps.gov/tps/standards.htm

The Secretary of the Interior’s Standards for Rehabilitation & Illustrated Guidelines for Rehabilitating Historic Buildings – LINK

The Secretary of the Interior’s Standards for the Treatment of Historic Properties with Guidelines for Preserving, Rehabilitating, Restoring and Reconstructing Historic Buildings – LINK