Originally, North Tipperary County Council holds its meetings in Nenagh Courthouse. The county council relocates to a new facility, known as the Civic Offices, in 2005.
Hanafin marries Mona Brady, daughter of J. P. Brady, on August 2, 1958, in Clonmel, County Tipperary. The wedding is followed by a reception at the Galtee Hotel, Cahir, which is attended by various notables including Rev. Father J. J. Hampson, president of Blackrock College. Their first child, Mary Hanafin, is born in June 1959, followed by John Hanafin in September 1960. Mary Hanafin is a former Fianna Fáil TD and government minister, and John Hanafin is a former Fianna Fáil senator.
Hanafin operates the Anner Hotel, located in Thurles during the 1960s. Initially successful, the business fails in 1967, which Mary Hanafin later blames on her father’s excess drinking. Subsequently, Hanafin is a director of the Transinternational Oil Company.
Hanafin’s first attempt for election to public office proves unsuccessful. In 1953, he seeks to be co-opted to fill the vacancy on North Tipperary County Council created by the death of his father. In the event councillors co-opt a Labour Party nominee, Michael Treacy, by eleven votes to seven.
Hanafin is elected a member of North Tipperary County Council in 1955, polling 934 first preference votes. Subsequently, in 1956, drawing support from the Clann na Poblachta representatives, he is elected Chairman of the County Council.
Hanafin is re-elected to North Tipperary County Council in 1960, polling 797 first preference votes. In 1961, he votes against the Fianna Fáil nominee for Chair of the County Council, Thomas F. Meagher, and in favour of the Clann na Poblachta nominee, Michael F. Cronin, who is elected by 10 votes to 9. In 1964, he controversially votes in favour of Jeremiah Mockler, “a former school mate,” who is elected by 10 votes to 9 to the office of Rate Collector for Borrisokane, County Tipperary.
Hanafin holds the seat until 1985. He is first elected to Seanad Éireann in 1969 and retains his seat until the 1993 Seanad election at which he loses his seat by one vote. He regains his seat in the 1997 elections, and in 2002 announces his retirement from politics. He unsuccessfully contests the 1977 and 1981 Irish general elections for the Tipperary North constituency. He is a chief fundraiser of the Fianna Fáil party for many years.
In May 2015, Hanafin accuses “Yes” campaigners in the same-sex marriage referendum of spreading a “palpable climate of fear,” and calls for a “No” vote.
Hanafin opposes the legalisation of divorce, which is introduced in 1995, and attempts to overturn the referendum result in the Supreme Court, but is refused by the court.
An opponent of abortion, Hanafin is one of the promoters of the constitutional amendment that enshrines the legal ban on abortion in the Constitution of Ireland. He is co-founder, chairman and later honorary president of the Pro Life Campaign.
Hanafin dies in County Tipperary at the age of 86 on June 22, 2017. A Requiem Mass is held at the Cathedral of the Assumption, Thurles, on June 25, with burial afterward in St. Patrick’s Cemetery.