This industry comprises government establishments primarily engaged in the administration and planning of housing programs. Cross-References. Government establishments primarily engaged in-- ? Operating government rental housing--are classified in Subsector 531, Real Estate; ? Conducting building inspections and enforcing building codes and standards--are classified in Industry 926150, Regulation, Licensing, and Inspection of Miscellaneous Commercial Sectors; and ? Buying, pooling, and repackaging mortgages or home loans for sale to others on the secondary market--are classified in U.S. Industry 522294, Secondary Market Financing.