What preservation method aims to keep all historic fabric intact?

The method that aims to keep all historic fabric intact is preservation. This approach focuses on maintaining and protecting the existing materials, features, and integrity of a historic structure as it exists at present. Preservation emphasizes the idea of safeguarding the historical significance and authenticity by preventing deterioration and maintaining current conditions rather than making significant alterations or restoring elements to a past state.

While restoration involves returning a property to its original condition by repairing or replacing missing elements, and reconstruction recreates an accurate replica of a non-surviving building or structure, preservation seeks to retain all original materials and fabric without radical changes. Rehabilitation takes a more flexible approach by allowing some modifications to accommodate modern needs while still respecting the historical character of the property. Therefore, preservation is the most appropriate choice when the goal is to keep all historic fabric intact and maintain the existing character of a site.