The Casa Loma Heritage Conservation District (HCD) Study Area is a residential neighbourhood that primarily contains houses built between the late 19th and mid-20th centuries in a variety of styles, including Arts and Crafts, Tudor Revival, Edwardian, and Georgian Revival. The area’s initial period of development was defined by its being an exclusive enclave of residential estates atop the Davenport Escarpment overlooking the growing city of Toronto, valued for its sweeping views  and park-like setting.

The Casa Loma HCD Study was initiated in Fall 2017, and included historic and archival research, a built form survey, analysis and evaluation to determine if the Study Area warrants designation as a HCD. The HCD Study was received by the Toronto Preservation Board on July 12, 2018, including the recommendation to proceed with developing HCD Plans for Hilton Avenue and Wells Hill Avenue.