The Summerhouse on the Capitol Grounds surrounded by pink azalea flowers.
A few ideas to help you in planning a visit to Capitol Hill.


Photo of Capitol Hill steps.
Download a PDF of the full list.


War of 1812
The War of 1812 Tour: Three Points of View Weekdays at 11 a.m. – Join a Visitor...

Cannon Renewal Project FAQs

The Cannon House Office Building is the oldest office building on the Capitol campus, dating back to 1908. Due to its advanced age, the Cannon Building will undergo a top-to-bottom renewal. Below are frequently asked questions about the Cannon Renewal Project.

Why is this work necessary now?
This iconic facility, built in 1908, is the oldest congressional office building. The building structure and many of the building systems have not been modernized during the building’s existence. A critical stage has been reached in the life of the Cannon Building – the century-old building is plagued with serious safety, health, environmental and operational issues that are rapidly worsening. Without action, the essential systems housed behind the walls and in mechanical rooms will continue to crumble and fail, impacting Members, staff and constituents. To address these urgent problems and to ensure the Cannon Building provides an effective congressional workplace into the next century, the Architect of the Capitol (AOC) plans a complete renewal of the building.

What are the benefits of the project?
Over the last several years, the building has experienced plumbing leaks, plaster ceiling failures and chunks of decorative stone dislodging from the building exterior and falling to the ground. The project will improve the functionality of the building for both Members and staff, making it far more efficient, comfortable and safer, while retaining the historic grandeur of the building. The renewal project will replace or repair key building systems such as heating, cooling, lighting, plumbing, fire and life safety, accessibility and structural integrity.

How long will it take?
The renewal project is scheduled to take approximately 10 years, broken into five distinct phases of work. The duration of each phase will align with the congressional move cycles. The first phase, Phase 0, began in early 2015 and focuses on the entire basement level. Tunnel access to adjacent buildings remains open during this phase. 

Graphic of the different Cannon Renewal Project phases.

What is the current status of the project?
Phase 0 is well underway and a majority of the noise-producing work is being conducted at night.

When will this impact Members of Congress and their staff?
Members in the Cannon House Office Building will not be relocated until December 2016 in advance of the Phase 1 construction, which is scheduled to start in January 2017. Phases 1-4 of the project will require that affected wings be vacated. Members and their staffs will remain in the upper campus, while some Committee and support staff will relocate to the Ford House Office Building or the Thomas P. O'Neill, Jr. Federal Building (located next to the Ford Building).

When will this impact other offices?
During Phases 0 through 2, there will be work to prepare new Member suites in the Longworth and Rayburn House Office Buildings. These future suites are located in spaces currently occupied by congressional and support staff. In support of the renewal, occupant relocations began in 2014 to the Thomas P. O’Neill, Jr. Federal Building and other House Office Buildings.

How does this impact the Member office lottery?
Additional Member suites will be built out in the Longworth and Rayburn Buildings and included in the existing election cycle lottery process. During each construction phase, offices in the section of the Cannon Building closed for renovation will be excluded from the lottery process. Temporary member suites will be created by relocating certain House support offices and committee staff to the Ford Building and/or leased space in the newly renovated O'Neill Building (located next to the Ford Building). House leadership will make final space use decisions.

How can the Architect of the Capitol ensure the project delivers good value to the taxpayer?
The Architect of the Capitol (AOC) is committed to maximizing taxpayer value, reducing the risk of cost overruns and delays and minimizing disruption to the work of Congress. During the initial steps of the project, AOC is working closely with the House to clearly define requirements to avoid future changes that may cause cost increases and delays. Additionally, AOC is partnering with the Government Accountability Office and General Services Administration to incorporate lessons learned from other similar, complex projects and to implement risk mitigation strategies. Similar projects have been conducted throughout the executive branch including the Eisenhower Executive Office Building and the headquarters of the Departments of Interior, Justice, Treasury and Commerce.

What is the budget for the renewal?
The renewal process is scheduled to take approximately 10 years, with each of the five phases (0-4) aligned to fall between congressional move cycles. The entire project budget is $752.7 million with allocations for planning, design, construction, management, furniture, information technology, security equipment and swing space build-out and moves.

Cannon Renewal Updates

Resources for House Staff
The pages below are restricted to the Capitol Network only.

Phase 1 Closure Map
January 2017-November 2018

Cannon Renewal Closure Map, click to enlarge.

Click image above to enlarge.

Contact Info
Kristen Frederick

View the AOC's "Renewing the Cannon" magazine on Flipboard.