Palace of Westminster Restoration: Estimates Reach Nearly £40 Billion Over Six Decades

Monumental Costs and Decades-Long Project for UK Parliament's Home

New proposals from the restoration and renewal client board indicate that the comprehensive overhaul of the iconic Palace of Westminster could incur costs approaching £40 billion and extend over a period of up to 61 years. These figures, which include inflation, underscore the significant financial and logistical challenges facing the restoration of the United Kingdom's parliamentary seat. The board has presented Members of Parliament (MPs) and peers with two primary options for the long-awaited project.

One option involves a 'full decant,' where both the House of Commons and the House of Lords would temporarily vacate the palace entirely during the works. This approach is estimated to take between 19 to 24 years and cost up to £15.6 billion. Under this scenario, the Commons would temporarily relocate to the nearby Northern Estate from 2032, while the Lords would move to the QEII Conference Centre. The alternative, a 'staged decant' or carrying out the project in stages while Parliament remains partially operational, is projected to take between 38 to 61 years, with costs potentially rising as high as £39.2 billion.

Urgent Need Amidst Deterioration and Rising Repair Bills

The urgency of the restoration is highlighted by the current state of the Victorian-era building. The client board has stated, 'We are beyond the point where putting off these major works is sustainable,' emphasizing the advanced deterioration and growing risks to those working in or visiting the site. The UK Parliament is currently spending approximately £1.5 million weekly on ongoing repairs and maintenance, a figure described as 'unsustainable.'

The Palace faces a multitude of structural and infrastructural problems, including:

• Frequent heating failures in the House of Lords
• Significant issues with the sewerage system
• Closure of toilets due to the presence of Reinforced Autoclaved Aerated Concrete (RAAC)
• Widespread asbestos, found in an estimated 2,500 locations
• A history of safety incidents, including 36 fire incidents, 12 asbestos incidents, and 19 stonemasonry incidents since 2016
• Only 12% of the Palace's total floor area currently has step-free access

Initial Works and Future Decisions

MPs and peers are also being asked to approve an initial seven-year programme of essential works, estimated to cost up to £3 billion. If approved, this phase could commence in 2026 and would include refurbishing the Victoria Tower, constructing a Thames-side jetty for deliveries, and beginning underground tunnelling works. A final decision on the comprehensive restoration approach is anticipated by mid-2030. Delays in initiating the full programme are costly, with estimates suggesting an additional £70 million per year in reactive maintenance and a further £250 million to £350 million annually due to construction cost inflation.