The increasing adoption of Building Information Modeling (BIM) in Quantity Surveying (QS) has enhanced collaboration and cost management but introduced substantial cybersecurity risks to cloud-based construction data. Despite these threats, a tailored cybersecurity governance framework is lacking for BIM-enabled QS practice, particularly in developing countries. This study developed and empirically evaluated a Cybersecurity Governance Framework for BIM-enabled QS practice in Nigeria. Using a quantitative survey design, data were collected from 235 construction and IT professionals involved in BIM implementation. The research instrument demonstrated acceptable internal consistency, with Cronbach’s alpha coefficients ranging from 0.686 to 0.817 across principal constructs. Descriptive statistics, Pearson correlation, and multiple regression analyses were used to evaluate the relationships among cybersecurity awareness, threat exposure, organizational preparedness, and framework acceptance. The findings indicate that cybersecurity awareness and organizational preparedness are significant predictors of framework acceptance, whereas perceived threat exposure alone does not significantly influence stakeholder acceptance. Based on these results, a comprehensive cybersecurity governance framework aligned with ISO 19650-5, ISO/IEC 27001:2022, and the NIST Cybersecurity Framework (CSF) 2.0 is proposed to secure BIM implementation within QS practice. This study contributes to construction informatics and cybersecurity literature by providing an empirically validated governance model that supports secure digital transformation, organizational resilience, and improved information security management within BIM-enabled construction environments.