The purpose of this report is to provide reference material on the technical options for energy conservation in buildings. Actions pertinent to existing buildings and new buildings are considered separately. Regarding existing buildings, principal topics include summer cooling, winter heating, and other energy-related features such as insulation, fenestration, lighting, appliances, hot water, and human comfort. Suggested actions include those which can be accomplished voluntarily or without expense and those which require some modest effort or expense on the part of the building owner or occupant. Regarding new buildings, energy conservation actions that deal with building design and mechanical systems are described. The report concludes with a summary of mechanisms for implementation of conservation methods and criteria for use in evaluation of them. Throughout the report, emphasis is placed on technical options. The economic implications of such options have not been detailed. (Author/MLF)