This research analyses how the front gable wall of the Non-Pareille manor house behaves structurally following a fire incident at the house. A basic micro-model was created, incorporating material characteristics obtained from non-destructive testing. Organised based on different zones, the unique material characteristics, showing variability across the wall, are visually depicted and included in the FE model. A thorough quasi-static analysis evaluated how the wall responded to gravity loading in two different scenarios. This research highlights the importance of implementing sustainable conservation strategies in heritage structures. By analysing the structural behaviour of the Non-Pareille manor house and demonstrating the benefits of roof reconstruction, this study contributes to the existing body of knowledge. It provides valuable insights for heritage conservation practitioners, policymakers, and stakeholders involved in preserving our cultural heritage.