École secondaire publique De La Salle occupies a site along the edge in Ottawa’s Lowertown district, where its massing responds to the fine-grained historic fabric of the surrounding neighborhood. The building presents itself as a mid‑scale institutional block, organized in a series of rectilinear volumes that step and shift subtly to break down its overall presence along Old St. Patrick Street. Its façades typically combine brick masonry common to the area’s architectural language. Windows are arranged in rhythmic vertical groupings, providing generous daylighting to interior learning spaces while reinforcing the building’s ordered, civic expression.

Set within a heavily altered urban environment the structure is relatively compact for its program with large site areas devoted to parking and an athletics field. Landscaping is modest but intentional primarily along Old St. Patrick Street: small forecourt gardens, street trees, and planting beds soften the building’s perimeter and create welcoming threshold spaces for students and visitors. The relationship between built form and landscape is pragmatic yet community-oriented, with outdoor areas supporting circulation, casual gathering, and seasonal programming. In its overall context, École secondaire publique De La Salle successfully balances the character of a neighborhood institution with the functional requirements of a modern educational facility, offering a cohesive architectural presence with unique touches and varied massing that aligns with both its surroundings and its role as an important educational institution within the Lowertown neighbourhood of Ottawa.