The Whian Whian Memorial Hall is a typically designed rural community hall. It is constructed of timber, with a small gabled alcove at the front. The gabled roof is covered with corrugated iron and there are air vents on the roof ridge. There is a skillion roof extension on the left side of the building and a skillion roof covering the front porch.
There was a hall in Whian Whian by August 1917. By August 1931, planning was underway for a new one. Mr E. Devine, president of the hall committee, called tenders for its erection and the supply of materials (Northern Star, 26 August 1931). Despite this action, a new hall was not constructed because of the impact of the Great Depression.
A further attempt was made in 1937 to construct the hall, but at a meeting of the Whian Whian Hall and Junior Farmers' Advisory Committee held in December, attendees were advised the Rural Bank had rejected the application, saying "no money could be borrowed for building purposes without sufficient guarantors." Working on the belief other public halls had borrowed money without guarantors, members decided they would request the bank return their plans and specifications. They would instead approach sawmills about materials, and if successful, employ a carpenter as a foreman and recruit volunteers to assist with the build, to reduce labour costs (Northern Star, 21 December 1937).
Construction finally began in 1939, on land donated by A. West, with Mr H. Knight of Jiggi as the building contractor. An advertisement appeared in the Northern Star on 9 December 1939 for the "grand opening social" to be held on 20 December. Over 50 people attended the event, including those from surrounding towns. Mr A. Smith performed the official opening and stated "few small centres could boast of public buildings which Whian Whian now possessed, and by hard work and splendid organisation the residents had obtained their hall." The evening concluded with dancing, refreshments, and music by the Rix Orchestra of Lismore (Northern Star, 1 January 1940). Shortly after, on 3 January 1940, the hall was gazetted as a Public Hall.
In June 1947, Mr Devine chaired a public meeting to discuss erecting an honour roll for those who served in the Second World War. Attendees agreed to proceed with the roll and place it in the hall, which would then be renamed the "Memorial Hall, Whian Whian." The meeting was reported in the Star on 19 June 1947. Of the name change, the article said:
This was thought fitting as the first function held in the hall after erection in 1939 was a presentation to Pte. G. Campbell, who was the first soldier to enlist. This was followed through the early war years by a number of similar functions.
After this date, the media referred to the building as the Whian Whian Memorial Hall.
The same meeting also raised the issue of constructing a supper room for the hall. The subsequent request for a permit and materials was not granted because of the shortage of building materials following the war. Not to be deterred, the hall committee eventually succeeded and the new room was officially opened around September 1952. The night was attended by a large crowd, who were entertained by dancing and card games. Former treasurer Mr Jemmett performed the official opening (Northern Star, 6 September 1952).