In the Netherlands the state does not take direct responsibility for the care of archaeological monuments. Instead, the emphasis is on supporting private owners to look after monuments in their care. This article focuses on the range of non-governmental trust organisations that have been established to care for built heritage in the Netherlands. One such organisation is the Utrechts Landschap Foundation, established in 1927, which has recently championed what can be termed a 'triple heritage helix' to describe the role played by the foundation, public government and civil society. In this triple heritage helix model, all three partners have a role, but Utrechts Landschap is the central, lead partner that provides the long-term vision, skills and administration to ensure that the heritage sites under the trust's care are managed and protected effectively.