BPI-1200-S-201x: Standard for Basic Analysis of Buildings is now available for public comment for a period of 45 days. BPI-1200-S-201x was developed in conjunction with BPI-1100-T-201x: Home Energy Auditing Standard in an effort to standardize and clarify how to conduct a whole-building, science-based energy audit of existing homes. To submit comments, visit: Formal Public Comment Process.