Secretary of Interior Standards

The Secretary of the Interior's Standards for the Treatment of Historic Properties are common sense historic preservation principles in non-technical language. They promote historic preservation best practices that will help to protect our nation’s irreplaceable cultural resources.

Standards for Preservation

Standards for Rehabilitation

Standards for Restoration

Standards for Reconstruction

History of the Standards

Guidelines for the Treatment Guidelines for the Treatment of Cultural Landscapes

Guidelines for Rehabilitating Historic Buildings

Guidelines on Sustainability