Construction is continuing on a 53,000 s/f Class A office building at 155 Borthwick Ave.
The building, which is adjacent to the Portsmouth Hospital, is located off I-95, near the Portsmouth traffic circle. Pro Con Inc. of Manchester is the architect and the construction manager for the $5 million design build project, which is being developed by Millennium Borthwick II, LLC.
The 3-story office building will have an enclosed 3-story connector tying the new building to the existing 3-story office building on the same site and enabling people to walk between the two buildings without venturing outdoors. The professional office space will be ready for tenant fit-up when the building is completed in May.
The steel framed building will have a brick façade with ribbon windows and a curtain wall window system at the corners of the building. The main entrance features a 2-tiered canopy with brick and metal accent piers. Plans call for the building to have a below-grade parking garage with 36 spaces.
"The brick façade and the ribbon windows are currently being installed," according to the project manager for Pro Con Inc. "The interior partitions and mechanical, electrical, and plumbing systems are underway. We are on-schedule for a mid-spring completion."

Pro Con Inc. is a full service design and construction management firm specializing in all levels of commercial, industrial, institutional and multi-residential projects. This is one of several Class A Office buildings Pro Con Inc has recently designed and managed including The Bottomline Technologies headquarters at the Pease International Tradeport and Capital Commons, Concord, NH.