 LOS ANGELES TORONTO--BUSINESS WIRE--Hudson Pacific Properties, Inc. Hudson Pacific NYSE: HPP and Canada Pension Plan Investment Board CPP Investments have completed their previously announced acquisition of 1918 8th Avenue, a 668,000-square-foot Class A office building in Seattles Denny Triangle neighborhood for US625 million before closing adjustments. Through the joint venture, CPP Investments owns a 45 interest and Hudson Pacific owns 55 and acts as general partner and as 