Bret O'Brien of O'Brien Commercial Properties represented three landlords in the Hopkinton Technology Park in leasing transactions totaling 41,750 s/f, over the last year. The Hopkinton Technology Park is a master-planned commerce center offering tenants identity, amenities, and expansion capabilities; located between 86 South St. and 122 South St. encompassing ten buildings on South St. and Aves. C, D, E and F. Tenants involved in leasing activity were Trenergi Inc., Project Just Because Inc., Qualmark Inc., A123 Systems, Interstate Electical Corp., HOP Energy LLC and The Boston Athletic Association. Eric O'Brien, who also represented the landlords with Project Just Because, Qualmark and HOP Energy, LLC, was the only other broker on either side of any of these deals. O'Brien Commercial Properties continues to lease space in the boroughs at a brisk pace. O'Brien Commercial recently completed five leases totaling over 45,000 s/f at industrial and flex locations within a half mile of Exit 23C off Interstate 495 in Marlboro. Bret O'Brien represented Webco Engineering in a new lease of 12,432 s/f at 155 Northboro Rd. in Southboro. Webco, which is relocating from their 16,000 s/f building which O'Brien Commercial Properties has under agreement at 45 Hopkinton Rd. in Westboro, manufactures custom equipment for the paper industry. Bret O'Brien also represented Aspen Systems in a 10,770 s/f renewal at 24 Saint Martin Dr., and Joel Aho represented New England Optical Systems in a 7,500 s/f lease at 237 Cedar Hill St. Bret O'Brien and Joel Aho procured Qteros in a lease of the 8,900 s/f freestanding Building I at the Marlboro Technology Center, while in the main building at the same address, Eric O'Brien and Aho represented 257 Simarano, LLC in a 5,600 s/f lease with Dotgain Systems.