The self-similar expansion of a warm non-ideal magnetized dusty plasma filling semi-infinite half space has been investigated by incorporating the van der Waals equation of state for the dust species. The analysis has been carried out by using an MHD model wherein the plasma is frozen to the magnetic field lines and quasi charge-neutrality is maintained. The expansion dynamics is described by a self-similar set of nonlinear equations, which are numerically solved for the dust density, velocity and pressure profiles. ©2000 American Institute of Physics.