Lismore's commitment to preserving its historical landmarks is evident through a range of heritage listings, including sites recognized on the New South Wales State Heritage Register. Among these are the Colemans Bridge over Leycester Creek, the Lismore Railway Station Group, and the Lismore Railway Underbridges—important features that mark the city’s development during the 19th and early 20th centuries.

Additionally, several significant buildings are listed by the local council under the Environmental Planning and Assessment Act of 1979. Notable among these are the 1883 Classical Revival Court House on Zadoc Street, which showcases the grandeur of 19th-century architecture, and the 1898 Post and Telegraph Office, an example of Art Nouveau design. The Memorial Baths on Molesworth Street, constructed in 1928 to honor World War I veterans, and the Lismore Fire Station on Molesworth Street are also listed.

Other heritage properties include the Commonwealth Bank Building on Molesworth Street, the former Government Savings Bank on Woodlark Street, and the Dalley Street Conservation Area, which preserve the character of Lismore’s early 20th-century urban landscape.

For a comprehensive list of heritage sites in Lismore, the New South Wales Heritage Database provides detailed information on all registered properties, including both state and locally significant sites. These listings highlight Lismore's historical depth, from its key infrastructure to its architectural gems, ensuring that the city’s heritage remains a visible and celebrated part of its identity.