The Cannon Renewal Project provides an effective workplace for the next century to serve the needs of the U.S. House of Representatives and support Congressional operations.

The Cannon House Office Building is the oldest office building on the U.S. Capitol campus, dating back to 1908. After a long-term effort, a top-to-bottom renewal of the Cannon Building is in progress.

The interior of each wing has gone through extensive renovation and the historic exterior has received a partial facelift. Once renewal is complete, the Cannon Building courtyard will become usable green space for the first time since the garage below it was built in the 1950s. 

Current Phase: South Wing & Courtyard

Historic Preservation

As an authority on historic preservation, the Architect of the Capitol (AOC) follows conservation principles. The renewal of the Cannon House Office Building is an example of the AOC's commitment to preserving our nation's history one project at a time for future generations to appreciate and enjoy.

Historic Preservation: Cannon House Office Building

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The Caucus Room chandelier, a prominent feature of the space, can be seen in original photos dating to 1908.
Projects

Cannon Light Fixture Restoration

While light fixtures are like jewelry to a room, they can also set a tone for the significance of the space. Naturally, they also provide illumination to enable work and safe movement.
Restoring the windows of the Cannon House Office Building in Washington, D.C.
Projects

Preserving Historic Windows and Doors

The preservation of the Cannon House Office Building's historic windows and doors allows the building to retain much of its original character and charm, while increasing the building's functionality for those who work and visit within its walls. Learn more about the process.
A bowler hat discovered during the renewal of the Cannon House Office Building.
History & Discoveries

Cool Cannon Construction Finds

During the process of renewing the Cannon House Office Building, workers have found hidden treasures that had been lost or discarded by the laborers who constructed the building more than 100 years ago. Here's a small sampling of what has been discovered since the start of the project.

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