The Mantokuji Mission is currently listed on the Hawaii Register of Historic Places. Persistent erosion of the unprotected shoreline fronting the property has resulted in the movement of the shoreline closer to the temple building. In an effort to develop an understanding of the various options and associated costs to manage the future effects on the structure, the Mantokuji Mission engaged AHL to provide options for various floodproofing methods and/or relocation that may extend the time that the temple structure will remain usable, as well as estimated costs for these measures.