Mechanical, Electrical, Plumbing and Fire Protection renovation to a 101,500 sq. ft. abandoned and unoccupied six story mill building located in downtown Portsmouth that consisted of former factory space. The building was converted into 50+ residential apartments and some common areas for tenants to utilize. CSI provided cooling and heating to each unit using a wall hung split system and radiant flooring. The common areas were heated using radiant wall panels, and unit heaters were used in the stairwells. The building was designed with a combination of LED and Socket based lighting fixtures per the owners request, general use power, fire alarm, door entry system, and power for mechanical and plumbing equipment.