NAI Friedland Realty recently sold the 36-acre site opposite Cortlandt Town Center to Westrock Development for an undisclosed price. Westrock proposes to build a mixed-use development on the site with both retail and housing components. Steven Oder, CEO of Friedland Realty, will be the exclusive broker for the retail development.   The 10-acre retail parcel with over 1,000 ft. of road frontage is the proposed site of Cortlandt Crossings, a new grade level retail shopping center. The center will include 85,000 s/f of retail space and a 5,000 s/f bank pad site with 445 parking spaces. Construction is scheduled to start in November 2009, with a delivery date of November 2010.