the old chamber's style. The work was undertaken by John Mowlem & Co., and construction lasted until 1950. The Lords Chamber was then renovated over the ensuing months; the Lords re-occupied it in May 1951. Recent history As the need for office space in the Palace increased, Parliament acquired office space in the nearby Norman Shaw Building in 1975, and in the custom-built Portcullis House, completed in 2000. This increase has enabled all Members of Parliament (MP) to have their own office facilities. The Palace of Westminster, which is a Grade 1 listed building, is in urgent need of extensive restoration to its fabric. A 2012 pre-feasibility report set out several options, including the possibility of Parliament moving to other premises while work is carried out. At the same time, the option of moving Parliament to a new location was discounted, with staying at the Westminster site preferred. An Independent Options Appraisal Report released in June 2015 found that the cost to restore the Palace of Westminster could be as much as £7.1 billion if MPs were to remain at the Palace whilst works take place. MPs decided in 2016 to vacate the building for six years starting in 2022. In January 2018, the House of Commons voted for both houses to vacate the Palace of Westminster to allow for a complete refurbishment of the building which may take up to six years starting in 2025. It is expected that the House of Commons will be temporarily housed in a replica chamber to be located in Richmond House in Whitehall and the House of Lords will be housed at the Queen Elizabeth II Conference Centre in Parliament Square. Restoration and Renewal Client Board In September 2022, the formation of a new joint committee of the House of Lords and the House of Commons was announced to oversee the necessary works: called the Restoration and Renewal Client Board, its Parliamentarian members are: The Speaker of the House of Commons (Sir Lindsay Hoyle) The Lord Speaker (Lord McFall of Alcluith) Nickie Aiken, Deidre Brock, Nick Brown, Thangam Debbonaire, Lord Gardiner of Kimble, Lord German, Lord Hill of Oareford, Lord Judge, Penny Mordaunt, Lord Newby, Baroness Smith of Basildon, Lord Touhig, Lord True, Lord Vaux of Harrowden, Sir Charles Walker. They are joined by lay members: Dr John Benger, Clerk of the House of Commons, Simon Burton, Clerk of the Parliaments, Marianne Cwynarski,