[2] The second guildhall was an early 14th-century battlemented structure at the corner of Abington Street and Wood Hill; it was sold in 1864 and subsequently demolished.

[2][3] The current building, the third guildhall, designed by Edward William Godwin[4] in the Gothic Revival style, was officially opened on 17 May 1864.

[5] The original part of the building was symmetrical with three first-floor windows either side of the main entrance,[6] above which rose a clock tower with a steeply pitched roof.

[9][10] A statue by Sir Francis Chantrey of Spencer Perceval, Member of Parliament for Northampton and the only British Prime Minister to have been assassinated, was originally unveiled in 1817 and is also on display inside.

[12] A series of bronze statues of Northampton's "history makers", cast by the sculptor Richard Austin, were unveiled in July 2017 within the courtyard of the 1992 extension.