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The article describes the importance of freehand drawing in the daily practice of an architectural design office. It presents the areas of activity in which freehand drawing is essential as well as those in which its importance has decreased. It presents the function of freehand drawing in communication with both an investor and other entities participating in the design process. The author emphasizes the individual character of every creator’s freehand drawing as well as the easiness and freedom of thoughts expression offered by this tool in daily professional work.