Kingsland property owner Pam Willis says insurance premiums may reach the point where owners start tearing down commercial buildings.
Ms Willis and business partner Andrew Turpin own four buildings in the vibrant inner-city suburb of Kingsland, including the heritage-listed Pages Building.
Several buildings in the suburb are classified as "earthquake-prone buildings", mostly two-storey Victorian and Edwardian buildings held together by brick and mortar with no reinforcing.
Kingsland Business Society manager Christine Foley said insurance costs were becoming a huge issue with owners of old buildings, which give Kingsland its character and cool factor.
Building owners in Kingsland were reluctant to talk about insurance costs given the sensitivity around the dangers of old buildings in an earthquake. One owner threatened to sue the Herald if it named him or his building.