The Ritz-Carlton Club and Residences is preparing to convert half of its timeshare units to condos, according to Socketsite. If this plan is approved, those 24 timeshare units at the 690 Market Street location would bring the number of condos to 81. There are a total of 106 units in the Ritz-Carlton Club and Residences, according to Socketsite. Now, 49 of those units are time shares. The Ritz-Carlton Club and Residences project was originally approved for development in 2007 when it added eight…