[1] The building was substantially extended in 1895, with the whole complex now generally known as King's Lynn Town Hall, with the 1895 extension being separately listed at Grade II.

[5][6][7] The new building, known as the "Stone Hall", which was designed with a steep arched roof, a large window and chequered patterned exterior, was built between 1422 and 1428.

[9] The town hall continued to be used as a public venue and concert performers included the contralto singer, Kathleen Ferrier, who made an appearance on 7 May 1948.

The council moved its main offices to a modern building called King's Court on Chapel Street in 1981,[13] but continues to use the town hall for meetings.

[9] Queen Elizabeth II visited the Guildhall, as part of celebrations to mark the 60th anniversary of her accession to the throne, on 9 February 2012.