His work combines technical precision with a soft colour palette. As an architect, Smith understood the structural logic of the buildings he painted. He used thin washes to define form rather than relying on heavy outlines. His watercolours often depict urban scenes or rural cottages with a clear sense of scale. He avoided cluttered details. Instead, he focused on the way light falls across stone surfaces and open spaces.

Modern collectors value the clarity and balance in Smith's compositions. His prints provide a sense of calm through their orderly perspective and muted tones. The architectural focus makes these pieces suitable for contemporary interiors that prioritise clean lines. His work captures a specific era of British and European topography. These watercolours offer a quiet view of the built environment.