The Grand Concourse Authority was awarded the 2005 National Honour Award by the 15,000 member American Society of Landscape Architects (ASLA), during the ASLA Annual Meeting in Fort Lauderdale, Florida on October 10, 2005. The award, in the ASLA's Professional Awards Communications category, goes to the Walkway Maintenance Manual published by the Authority in 2004.

In making the award - one of the only two presented that year - the ASLA's nine-member international jury noted that the Walkway Maintenance Manual offers, "Critical information for landscape architects to be able to ensure the future of their projects... anticipates long-term maintenance issues, " and is a "wonderful owner's manual... the design of the book is so clever." The National Honour Award recognizes "achievements in communicating landscape architecture works, techniques, technologies, history, or theory, and their lesson value to the intended audience."

The Grand Concourse Authority received the Canadian Society of Landscape Architects 2004 Regional Honour Award for the planning, design and construction associated with the Duck Pond Rehabilitation Project in Bowring Park.

This award is given to work which shows superior professional accomplishment and is the highest award given by the CSLA at the regional level.

The St. John's Clean and Beautiful volunteer organization recognizes the efforts and dedication of the many volunteers and businesses, organizations and community groups that have, through their own initiative, worked on clean up and beautification projects and maintained a commitment to environmental stewardship. The Grand Concourse Authority was presented with the 2003 Community Organizations Award for the Beautification of Harbourside Park, which is located in downtown St. John's.

The Historic Sites Association's 2003 Manning Award in the Community Importance category, was given to the Grand Concourse Authority for its design and construction of the Bishop Spencer Memorial at Rawlins Cross. Named for the late Bill Manning, former Parks Canada Superintendent of Historic Sites for Newfoundland and Labrador, the award honours outstanding projects that present the historic significance of special places within a community and the group that made the project happen. This award was shared between the City of St. John's, the Bishop Spencer Class of '59, and the Grand Concourse Authority.