Under the global “dual carbon” goals of carbon peaking and neutrality, the interior decoration industry faces significant challenges due to high carbon emissions and the lack of systematic low-carbon assessment methods. This study addresses the problem of elevated carbon emissions and insufficient quantitative evaluation in the interior decoration sector by developing a Building Information Modeling (BIM) based low-carbon full life-cycle analysis model. The proposed model successfully optimizes material selection, construction processes, and operation & maintenance strategies to achieve effective carbon emission control, resulting in a substantial reduction in the overall life-cycle carbon footprint. Experimental results from a representative residential renovation case demonstrate that, compared with traditional decoration approaches, the model reduces total life-cycle carbon emissions by approximately 28.6%, decreases material waste by 19.4%, and achieves economic cost savings of 12.7%. These findings provide a scientific foundation and practical guidance for low-carbon design and management in interior decoration, while offering a promising new technological pathway for the building industry to contribute to China’s dual-carbon objectives.
