Brett Herron today announced his resignation as mayoral committee member for transport and urban development and a Democratic Alliance (DA) member.
Mr Herron, who has also been found guilty of wrongdoing in the Bowmans report, addressed the media at the Forecourt to the Salt River Market.
His departure comes a day after former Cape Town mayor Patricia de Lille left her position and the DA.
Mr Herron becomes the ninth DA member to resign in the space of a week.
Mr Herron also accused some white DA councillors of blocking a low cost housing project in Salt River and elsewhere.
He also said the DA would never govern South Africa as it is a lost cause.