About Us Liegenschaften Treuhand St.Gallen AG was founded in 1975. Since the beginning of our operations, we have been managing real estate in the greater St. Gallen area. Our clientele includes private individuals, condominium owners’ associations, communities of heirs, and real estate companies. Services • Consulting and support • Administration and valuation records • Documentation • Real estate management • Property management • Planning and maintenance • Sales & valuation Whether you need assistance with a single-family home, condominium, multi-family residence, commercial property, or building plot, we provide comprehensive advice in every case.