813990 Other Similar Organizations (Except Business, Professional, Labor, and Political Organizations) This industry comprises establishments (except religious organizations, social advocacy organizations, civic and social organizations, business associations, professional organizations, labor unions, and political organizations) primarily engaged in promoting the interest of their members. The data published with NAICS code 813990 are comprised of these parts of the following SIC industries: 6531 (pt) Condominium, Cooperative Housing, and Homeowners' Associations 8641 (pt) Homeowner's and Condominium Associations (Not Providing Property Management) 8699 (pt) Other Similar Organizations