Neil Amper, SIOR vice president of Capstone Properties has sold a 23,940 s/f building located at 450 Valley St. He was hired by the trustee of the estate of Panbro Realty. The buyers were R.P. Iannuccillo and Sons Construction Company. The property will be used for the continued expansion of the company. The asking price was $650,000. Amper has also leased 5,600 s/f of warehouse space located at 31 Graystone St. in Warwick, to Mexica International Foods. Mexica grows avocados in Mexico, processes them into avocado oil in California and distributes the oil throughout the United States.