Star Equity Holdings Inc is a multi-industry diversified holding company with two segments: The construction segment manufactures modular housing units for commercial and residential applications. It operates in two businesses: modular building manufacturing and structural wall panel and wood foundation manufacturing, including building supply retail operations, and The investments segment holds corporate-owned real estate, which currently includes two manufacturing facilities in Maine that it leases back to KBS and manufacturing facility. The company derives maximum revenue from Construction Segment.