Palace of Westminster Restoration Faces a Costly Choice Between Two Futures
The next chapter in Parliament’s long-running restoration debate may determine not only how the Palace of Westminster is repaired, but how long the process will take, how much it will cost, and how much disruption the institution is willing to absorb. As the British government prepares for tomorrow’s State Opening of Parliament, the building’s future remains unresolved, despite a decade of warnings about its condition.
In February, the Restoration and Renewal joint parliamentary committee submitted two costed proposals. Full Decant would empty the site and move both the House of Commons and the House of Lords elsewhere for most of the works. Enhanced Maintenance and Improvement Plus, or EMI+, would keep MPs working in the palace while construction proceeds around them, with only the Lords moving out for part of the project. The committee says Parliament has until 2030 to decide.
The financial and temporal stakes are severe. The full programme is estimated at £11.5bn to £18.7bn, with projected timelines ranging from 24 to 61 years. If EMI+ is chosen, the report says the work could continue until 2086. Jack Pringle, chair of the board of trustees at the Royal Institute of British Architects, called full decant the clear choice, arguing that it would save between £10bn and £24bn and cut 30 years from the schedule. Nick Smith MP, who chairs the House of Commons Administration Committee, said the Commons will debate the proposals in the coming weeks.
The case for action is sharpened by the building’s daily costs. Taxpayers are already paying about £1.5m a week for reactive maintenance and repair, while the committee estimates that delay could add £70m a year. The palace is also burdened by asbestos and reinforced autoclaved aerated concrete, and only 12% of its floor area is step-free. It is certified for life safety, not building safety.
Yet the structure remains one of Britain’s most layered monuments. Charles Barry began building the present palace in 1840 on reclaimed land from the Thames, incorporating earlier medieval fabric, including Westminster Hall, which is 929 years old. Survey work across the site and in the river has found no subsidence, and the concrete foundation slab Barry laid remains intact. The committee also points to conservation work on Victoria Tower, the Lords chamber roof, and damaged stonework in areas including Medieval Cloister Court, Cromwell Green, and the Colonnade.
Beyond the engineering, the project is being framed as a test of heritage stewardship. The committee says it could also support specialist skills and employment, much as the reconstruction of Notre-Dame de Paris revived traditional craft in wood and stone. For Parliament, the question is no longer whether the building needs major intervention. It is whether the country is prepared to choose the harder, cleaner solution before the costs rise further.
