This statement is based on GAO's prior reports in 20 and ongoing monitoring of the project. This statement describes: (1) the status of the Cannon project and (2) changes to the project's estimated cost at completion. Each phase is scheduled around a 2-year congressional session.
The project-nearing year 7 of its planned 10-year duration-is being implemented in five sequential phases with an initial phase (Phase 0) for utility work and four subsequent phases (Phases 1 through 4) to renovate the north-, south-, east-, and west-facing sides of the building. In its Cannon project, the AOC intends to preserve the historic character while improving the functionality of the 113 year-old Cannon Building-the oldest congressional office building-as well as address deterioration to the building and its components. Toward this end, in May 2021, AOC began updating its integrated cost-schedule risk analysis, with the aim of more accurately determining the extent to which the project's costs are increasing and its estimated cost at completion. In its March 2021 project summary, AOC reported that a revised budget would be formulated after the completion of an analysis in December 2021.
Two unknown risks materialized after the December 2019 estimate: the effect of COVID-19 and the January 2021 security events–their impact on the project is uncertain. AOC updated the analysis in December 2019 and estimated the project cost at $890 million. However, AOC's 2018 analysis indicated that inaccurate estimates of costs for risk mitigations, unknown risks, and optimistic assumptions about the effect of risk mitigations on the project's cost and schedule could affect its total cost. AOC's 2018 analysis arrived at the same conclusion as its earlier analysis-that the project's estimated $753 million total cost was adequate to complete the project. In January 2018, AOC updated its analysis of risks by undertaking an integrated cost-schedule risk analysis. GAO made recommendations for AOC to incorporate leading practices into agency guidance and submit confidence levels of cost estimates to Congress. GAO found that AOC's cost estimating policies and guidance did not require a quantitative risk and uncertainty analysis nor the reporting of the resulting confidence level of the estimate.
C.įrom 2009 to 2018, AOC consistently estimated the project cost at $753 million, In 2014, GAO found that AOC's cost estimate of $753 million reflected several of GAO's leading practices for high-quality, reliable cost estimates, including that AOC had conducted a risk and uncertainty analysis. AOC completed Phase 0 utility work the Phase 1 work to renovate the building's west side, the Phase 2 work to renovate the building's north side and work is underway on Phase 3 of the building's east side.Ĭannon House Office Building, Washington, D. The Architect of the Capitol (AOC) has substantially completed three of five planned phases to renovate the Cannon House Office Building (Cannon project).