This U.S. industry comprises establishments primarily engaged in managing nonresidential real estate for others. Cross-References. ? Establishments primarily engaged in managing residential real estate for others are classified in U.S. Industry 531311, Residential Property Managers; ? Establishments primarily engaged in acting as lessors of buildings (except miniwarehouses and self storage units) that are not used as residences or dwellings are classified in Industry 531120, Lessors of Nonresidential Buildings (except Miniwarehouses); ? Establishments primarily engaged in renting or leasing space for self-storage are classified in Industry 531130, Lessors of Miniwarehouses and Self-Storage Units; and ? Establishments formed on behalf of individual nonresidential condominium owners are classified in Industry 81399, Other Similar Organizations (except Business, Professional, Labor, and Political Organizations).