Well    ....a  quick fix  would be to encourage conversion of homes  to multiple units  ....and  have 2 versions of rent control ...one  for  large corporate interests  and  one for  mom and  pop rentals  ...think about it ...if  individual  owners could ,  quickly and  easily ( ie  no red tape , few regulations  and  charges )  convert part of their homes to  a rental unit  .....there would be thousands of new units available  with in months .