The Council of the Inspectors General on Integrity and Efficiency (CIGIE) external peer review team (Review Team), conducted the required external peer review of the U.S. Department of Housing and Urban Development’s Office of Inspector General (HUD OIG). The Review Team conducted this external peer review in accordance with the CIGIE Inspection and Evaluation Committee guidance as contained in the Guide for Conducting Peer Reviews of Inspection and Evaluation Organizations of Federal Offices of Inspector General. This peer review is part of the first 3-year cycle of CIGIE-sponsored external peer reviews of the Quality Standards for Inspection and Evaluation (Blue Book). During this cycle, peer reviewers do not provide ratings of “pass/fail” or “compliant/non-compliant.” Rather, the purpose of the peer review is to (1) facilitate learning across the inspections and evaluations community and (2) support a fully professional inspection and evaluation function across the IG community.