A key element in the state-wide regulation of manufactured building is the state-local interface relationship. This study sought to isolate existing interface problems and to provide recommended solutions. Problem analysis and solutions presume a regulatory framework drawn along the lines suggested by the proposed Model Manufactured Building Act and Coordinated Evaluation System Documents. Inadequacies in the legislative areas coupled with the lack of a well defined communication system constitute the prime interface problems. Suggestions for legislative changes, including revisions to the Model Act, are presented in this report together with recommendations designed to achieve better communications. Results of the data collection and analysis of existing state legislation are included.