The estate exists because of a will. Alfred Beit - a German-born diamond magnate who made his fortune in South Africa and died in 1906 - left money for infrastructure across Northern Rhodesia. The Beit Trust that emerged from his bequest funded roads, bridges, hospitals, and the building that was then called Government House. Construction began in 1930 and concluded in 1934. British architect Sir William Walcot designed it in a restrained neoclassical idiom - columns, symmetry, a long facade facing what is now Independence Avenue. The building officially opened in 1935. From that date until independence in 1964, it was home to 13 colonial governors, ending with Sir Evelyn Hone. One of them, Sir John Maybin, died in office on 9 April 1941 and is buried in Lusaka's Aylmer May Cemetery - the only governor to be laid to rest in the country he administered.

On 24 October 1964, Zambia became independent. Government House became State House, and Kenneth Kaunda, the freedom movement leader who had spent years arguing his way out of colonial jails, moved in. The shift was more than cosmetic. A building designed for British representatives of a distant crown now had to accommodate the working life of an African head of state - his family, his security, the delegations arriving from newly independent neighbors, and the visiting leaders of the liberation movements Zambia would support over the next three decades. Kaunda added Nkwazi House, a 19-hole golf course, and a round of security upgrades in 1974, when guerrilla wars were burning across several borders and the country was taking in refugees from Rhodesia, Mozambique, and Angola. The 72-hectare grounds began to feel less like an estate and more like a compound.

What Chiluba revealed in 1995 reflected the pressures of that earlier era. Zambia under Kaunda was a one-party state, and while the country remained more peaceful than most of its neighbors, political detention was real. Allegations surfaced during the tunnel controversy that Major Ronald Chansa had been detained and tortured beneath State House in 1981 - claims Kaunda denied, calling any abuses isolated or exaggerated. The Zambia Congress of Trade Unions demanded punishment for those who had let the tunnels become public. The episode was a window into the difficult business of a country transitioning from single-party rule to multiparty democracy - old secrets surfacing, old grievances gaining new audiences, and a building that had served as the center of state power for sixty years now asked to answer for the things that had happened inside it.

Today State House is both a residence and a shorthand. Zambians say "State House" when they mean the executive branch the way Americans say "the White House" - a whole apparatus under one roof. The Office of the President is here, along with the Vice-President's Office, the Cabinet Secretariat, and the Presidential Delivery Unit. Cabinet meetings happen in halls that once hosted colonial dinner parties. Foreign dignitaries arrive along Independence Avenue, past security gates Kaunda's team installed, to a facade William Walcot designed nearly a century ago. The grounds still contain a golf course, a tennis court, wildlife that wanders the estate, a clinic, a filling station, and a police post - a small city inside the capital. In 2017 the government floated plans for a new State House to replace the old one. Nearly a decade later, the Walcot building is still the one that matters.