[1] The building was commissioned to replace a timber framed market house which dated back at least to the 15th century.

The first floor was fenestrated with sash windows flanked by pilasters supporting voussoirs, and the central section of three bays, which slightly projected forward, was surmounted by a modillioned pediment with a clock in the tympanum.

[1] A bust of King William III on a pedestal[a] was created by French sculptor Honoré Pellé and installed in a niche on the north side of the building.

[2] The musicologist Brian Trowell was one of the guests who spoke in the town hall as part of the celebrations for the launch of the first Petworth Festival in 1979.

[8] A major programme of refurbishment works was carried out with financial support from a local artist, Gwenda Morgan, and from English Heritage in the 1990s.