Sadée used a muted palette of greys and earthy browns to capture the overcast North Sea light. His work is defined by a rhythmic arrangement of figures, often seen in works like Scheveningse vrouwen bij het nalezen van een gerooid aardappelveld. Sadée avoided the overly sentimental style common in Victorian genre painting. Instead, he employed a documentary realism that captured the physical weight of baskets and the wind-swept textures of traditional Dutch clothing. His sketches, including Figuurstudies van vrouwen en kinderen, reveal a rigorous study of anatomy.

Modern collectors value Sadée for his honest depiction of a vanished way of life. His work, such as Fisherwoman with Children in the Dunes, offers a sense of quiet dignity without relying on artifice. The neutral tones and natural subjects make his prints suitable for contemporary interiors that favour a calm, balanced aesthetic. His ability to find beauty in the mundane tasks of coastal existence ensures his work remains relevant for those who appreciate the history of the Dutch coast.