The increase in the adoption of life carbon analysis in the building industry provides several opportunities, beyond allowing us to understand the environmental impacts associated with the construction, operation, and end-of-life stage of our structures. For buildings in areas which are susceptible to seismic events, there is a probability that these buildings will not see their full design life, and where a traditional carbon analysis cycle can be altered with unforeseen consequences, such as repairing activities or the need for demolition. This paper explores the challenges for regions that are exposed to a high-seismic or flood hazard zone, focusing on New Zealand. Additionally, an example is presented to understand the impact of these impacts on traditional cycle analysis, specifically from a structural point of view and due to seismic hazard. Understanding these impacts can provide insight into reducing vulnerability to reduce potential consequences or prepare for the additional burden that a significant natural hazard event can cause.