Ordinance 54-14 amended the Rent Ordinance to increase relocation assistance to two years worth of rent payment differential between the existing unit and a comparable unit. At the moment, this has been found unconstitutional (see, Jacoby, et al. v. CCSF, San Francisco Superior Court Case No. CGC-14-540709, and Levin v. CCSF, Federal District Court case no. 3:14-cv-03352), but the City is appealing the decision. Keep checking Costa-Hawkins.com for updates.
Legislative language available here.