While often grouped with the Hague School, Daalhoff developed a style that leaned towards Symbolism. His work is defined by a hazy, atmospheric quality that suggests a dreamlike state rather than a literal depiction of the Dutch countryside. He used a muted palette to create quiet scenes of rural architecture and still lifes. His technique involved a soft application of paint that avoided sharp lines or aggressive contrasts. This approach created a sense of stillness and mystery that set him apart from his more naturalistic contemporaries.

Daalhoff's paintings are often selected for contemporary living spaces due to their quietude. Because his work avoids the heavy detail of traditional realism, it functions as a visual pause on a wall. The soft colours and simple compositions provide a sense of order and peace. These paintings offer a subtle alternative to more assertive modern art. They are suitable for those who prefer art that invites quiet observation without demanding immediate attention.