His style follows the principles of Dutch Classicism. This movement favoured symmetry and clear proportions over the heavy ornamentation of the Baroque. In his drawings for interior decorations, Post uses restrained lines and balanced compositions. He often includes natural motifs like garlands or birds to soften the geometric precision of his architectural plans. These drawings provide a rare view into the luxury of seventeenth-century maritime travel.

Collectors value Post for his technical clarity and historical accuracy. His drawings function as both fine art and architectural records. They offer a window into the formal aesthetics of the Dutch Golden Age. The clean lines of his drawings fit well in modern spaces that value minimalism. His focus on order and proportion remains relevant for those who appreciate structured beauty in their home decor.