The rotational stiffness and moment capacity of wall-to-floor connections in platform type CLT structures, as influenced by the connection type, wall and floor thicknesses, and the load level in the CLT wall, were experimentally investigated. For determination of the nonlinear moment-rotation behavior of the connection, a novel test setup with simultaneous loading of the connection by two hydraulic actuators, in combination with digital image correlation (DIC), was used. Findings from this study allow for enhanced engineering design of CLT structures by considering the connection stiffness and its dependence on the investigated influence factors.