It is undeniable that the Stonborough Villa was completed with the involvement of the philosopher Ludwig Wittgenstein. However, the architectural contribution of Paul Engelmann, who was commissioned by Margaret Stonborough to design the villa, should not be overlooked. Generally, his are only described as resembling a Loosian design because Adolf Loos was his mentor.

In this paper, Engelmann’s 79 sketches will be analyzed in order to examine the logic and floor plan transformations found in the earliest designs of the Stonborough Villa. These sketches allow us to understand the boundaries and inherent logic that Wittgenstein and Engelmann applied, thereby revealing more precisely the architectural features that Engelmann conceptualized.