A group of 18 condominiums in an Uptown building were sold by their individual owners to a company that will operate the units as rentals.It's the latest in a string of deconversions of former condo buildings, as groups of homeowners cooperate to unload their condos in bulk to investors who operate them as apartments. In July, two North Side buildings containing a total of 34 units went for a combined $12.2 million.
