Voters could slam S.F. house flippers with major tax – San Francisco Business TimesFlip a house, get slapped with a tax. That is what a group of San Francisco supervisors have proposed in an effort to punish real estate flipping, the practice of buying, renovating and then quickly selling property. Supervisors John Avalos, David Campos, Jane Kim and Eric Mar are backing a “Stop the Flip” proposal that will appear on the...