In this work we numerically simulate the expansion of preexisting bubbles, typically known as heterogeneous nucleation. We use this to predict nucleation thresholds for single bubble attached to walls and study the dependency of this threshold on the solid surface properties. To that end we modify the boundary conditions at the wall to demonstrate the critical effect of two limiting boundary conditions to correctly predict the nucleation threshold of bubbles: a) The contact point is receding freely at a constant angle of contact b) The contact point is pinned at particular location and cannot move due to obstruction. The understanding of heterogeneous bubble nucleation is very important to devise techniques of well controlled cavitation for biomedical applications such as histotripsy, lithotripsy etc.