Consulting engineers commissioned to report on the condition of mechanical, electrical and public health (MEP) systems in Palace basements. They concluded that a significant amount of services plant and equipment needed replacement within 5-10 years and that repair and maintenance was uneconomic.
Several surveys undertaken and solutions to the MEP works proposed, including an evaluation exercise on steam vs pressurised hot water, and the formation of the Palace Basement Engineering Project.
Due diligence report commissioned of works completed so far in expectation of a significant programme of MEP works.
House authorities halted all previous plans, adopted a medium-term strategy to buy time and began working on a fully integrated long-term strategy. It was intended that the interim programme of work should secure the operation of the Houses in the Palace against risks of interruption owing to MEP failure until 2020.
Publication of Pre-feasibility Study (PDF, 76 pages, 1.21MB) on the Palace of Westminster Restoration and Renewal Programme on the condition of the Palace and the case for a major renovation.
Appointment of Deloitte Real Estate-led consortium to produce independent appraisal of range of options for a Restoration and Renewal Programme.
Publication of the Independent Options Appraisal (IOA) report.
Formation of Joint Select Committee to consider findings of IOA.
The Joint Committee publishes its recommendations on a preferred way forward for the restoration and renewal of the building.
Both Houses vote for a full move out of the Palace of Westminster as the 'best and most cost effective way' of carrying out the works.
Mid 2020s (tbc)
Earliest anticipated start date for the Restoration and Renewal Programme.