HIAG Immobilien Holding AG provides site and project development services in Switzerland. The company operates through three segments: Yielding Portfolio, Development Portfolio, and Transaction. It engages in the management and maintenance of properties; site and project development, including interim use, implementation, and transaction management to the investment property portfolio; and implementation of the capital recycling strategy. HIAG Immobilien Holding AG was founded in 1876 and is headquartered in Basel, Switzerland.