Home Why are so many supporting documents required for Certification? The City of Austin requests the minimum documentation needed to determine if an owner is socially and/or economically disadvantaged. This information includes documents that will demonstrate ownership, management and control. We will also need documentation that demonstrates the owner and/or owners' expertise and the Personal Net Worth (PNW). For more information, email smbrcertification@austintexas.gov or call 512.974.7645.