9:30 a.m. The Landmarks Preservation Commission holds a daylong public hearing regarding the appropriateness of numerous applications requesting modifications to historic properties. Landmarks Preservation Commission, Municipal Building, 1 Centre Street, 9th Floor, Conference Room. See here for the times at which specific properties will be discussed.
12 p.m. Celebrate the topping off of the 48,000-square-foot Triangle Building—the new home of the Dominican community organization, Alianza Dominicana. Intersection of 166th Street and St. Nicholas and Audubon avenues, Washington Heights. Free.
5:30 p.m. to 9 p.m. Madison Commercial Real Estate Services hosts “Creative Solutions: How to Manage a Real Estate Portfolio During an Economic Downturn,” featuring seminars, panel discussions, and dinner. Continuing Professional Education course credits can be earned. Schick’s Manor, 4901 12th Avenue, Brooklyn. $40. Reservations required. Call 1-877-338-2871.