His style merged the disciplined draftsmanship of his French origins with the theatricality of the Italian Baroque. Boulanger was a specialist in perspective and architectural illusion. He used these techniques to open up interior spaces. Solid ceilings appeared as open skies filled with mythological figures. His figures possess a sculptural quality, likely informed by his studies of classical monuments and tomb sculptures. This precision allowed him to balance large compositions without losing the clarity of individual forms.

Modern collectors value Boulanger for his ability to combine grand historical themes with decorative grace. His work offers a window into the courtly life of the seventeenth century. These prints bring a sense of architectural scale to a room. The balanced compositions and soft palettes work well in contemporary interiors. His drawings and studies provide a more intimate look at his technical skill. They are suitable for those who appreciate the foundations of classical art.