In around 1830 the two were united under the ownership of Thomas Leach, a local manufacturer of worsted and woollens.

11 Market Hill to accommodate a dedicated council chamber and municipal offices.

[7] The building continued to serve in that capacity for much of the next four decades,[8] but ceased to be the local seat of government when South Norfolk District Council was formed at Farthing Green House in Loddon in 1974.

In November 2012, a ceremony was held there during which the Royal Anglian Regiment received the Freedom of Diss.

Internally, the principal room is the council chamber, which features exposed roof trusses and purlins.