NEW YORK CITY — New York City-based Kamber Management Company is under contract to acquire the Riverside Garage portfolio of parking facilities on Manhattan’s Upper West Side. The portfolio consists of three parking garage condominiums, located at 80, 100-120, and 220-240 Riverside Boulevard. The portfolio, which comprises space at the base of five luxury residential towers, is a strong cash-flowing asset fully leased to Icon Parking Systems. Meridian Capital Group arranged the deal. David Shechtman was the exclusive broker for the sellers, and Kamber Management Company was represented by Steven Levy.