If you are interested in purchasing a home, this checklist can be used to assess new homes for sale. This guide includes information on St. Charles County’s minimum energy efficiency standards, as well as other voluntary measures the builder can take to increase energy efficiency. When builders meet or exceed these requirements and pay attention to these important details, it’s a good indication of the quality of construction and an indicator of whether the home will use energy efficiently. Energy efficient homes are more comfortable, cost less to operate, and cause less air pollution. This checklist doesn’t cover every aspect of St. Charles County’s energy code, but it addresses the requirements that are easiest to see and understand in a new home after construction is complete. With the information below, a home buyer can determine whether a new home likely meets minimum energy efficiency requirements.