The current approach to life cycle sustainability assessment (LCSA) is based on a triple-bottom line (TBL) framework, which has recognised limitations due to its predominantly quantitative and reductive summative approach. The increased understanding and importance of an integrative approach for incorporating qualitative sustainability considerations into life cycle choices for the built environment sectors have led this investigation towards a more holistic paradigm. The purpose of this paper is two-fold. Firstly, to introduce a conceptual method and application process for life cycle sustainability evaluation (LCSE) based on Integral Theory (IT). Secondly, to illustrate the application of LCSE with a case study as a potential advancement to the traditional Life Cycle Sustainability Assessment (LCSA) methodology. This work is centred around a sequence of methodological stages: (1) literature review, (2) action research with stakeholder groups, and (3) illustrative case study application. It was found that the key effectiveness of the LCSE approach lies in providing an expansive paradigm for sustainability evaluation and delivering a template for identifying missing perspectives or variables in a project. In particular, LCSE achieves increased integration of qualitative sustainability aspects in buildings and has potential to stimulate better long-term built environment outcomes in our cities and communities.

当前的生命周期可持续性评估 (LCSA) 方法基于三重底线 (TBL) 框架，该框架因其主要的定量和还原总结性方法而受到限制。将定性可持续性考虑纳入建筑环境部门的生命周期选择的综合方法的理解和重要性的增加使这项调查朝着更全面的范式发展。本文的目的是双重的。首先，介绍了基于积分理论（IT）的生命周期可持续性评价（LCSE）的概念方法和应用流程。其次，通过案例研究说明 LCSE 的应用，作为对传统生命周期可持续性评估 (LCSA) 方法的潜在改进。这项工作围绕一系列方法论阶段展开：(1) 文献综述，(2) 与利益相关者团体的行动研究，以及 (3) 说明性案例研究应用。发现 LCSE 方法的关键有效性在于为可持续性评估提供了一个广泛的范式，并提供了一个模板来识别项目中缺失的观点或变量。特别是，LCSE 实现了建筑质量可持续性方面的更多整合，并有可能在我们的城市和社区中激发更好的长期建筑环境成果。发现 LCSE 方法的关键有效性在于为可持续性评估提供了一个广泛的范式，并提供了一个模板来识别项目中缺失的观点或变量。特别是，LCSE 实现了建筑质量可持续性方面的更多整合，并有可能在我们的城市和社区中激发更好的长期建筑环境成果。发现 LCSE 方法的关键有效性在于为可持续性评估提供了一个广泛的范式，并提供了一个模板来识别项目中缺失的观点或变量。特别是，LCSE 实现了建筑质量可持续性方面的更多整合，并有可能在我们的城市和社区中激发更好的长期建筑环境成果。