If a home assessment is justified and requested, the report from the Indoor Environmental Professional (IEP) must provide accurate, useful and actionable information. An outline is provided including the necessary criteria for a report. These criteria include, ¨a rationale for each specific activity/measurement/sample, ¨ observations supported by objective evidence, ¨ conclusions prepared by the on-site investigator and incorporating data collected with ¨ priority assignments to any recommendations provided.