Help renters be buyers As condo conversions spread, L.A. must innovate to provide affordable housing. By Marc B. Haefele, LOS ANGELES faces an enormous rental housing crisis. Condominium conversions are taking thousands of apartment units off the market, which is driving up rents even as the number of people who can only afford to rent increases. About 12,000 rent-controlled apartments have been converted into condos or demolished in the last five years — 8,000 of them since 2005. And...more than 60% of Angelenos live in apartments, and the average monthly rent is $1,600 citywide. But housing activist Paul DeSantis envisions...