This document is intended to assist organizations that want to become certified or recertified by the California Energy Commission (CEC) to provide Home Energy Rating System services and operate a residential data registry for documents demonstrating compliance with the Title 24 Building Energy Efficiency Standards. It describes the mandatory requirements for new applications and recertifications to existing, approved applications. This document provides a checklist for applicants to use when developing applications and describes the process and criteria that CEC staff will use in reviewing each application. Staff’s review and recommendations will be considered by the CEC commissioners or executive director to approve or deny each application.