As buildings become more complex, smarter, interconnected, and self-reporting, can technologies be used to the advantage of the end-user and society? This study looks to determine if implementing big data can improve sustainability and increase efficiency in facilities management. Big data, the internet of things (IoT), their application in the construction industry, connection to sustainability, and impact on facilities management are researched. The research employs a mixed-methods approach with critical literature review, primary qualitative research by interviews, and quantitative data research by questionnaire with assessment through mind mapping and SPSS statistical analysis. Key findings identify an industry concept of big data, the IoT, BIM as a primary data contributor on AEC projects, with technology being most assistive to inception and design phases and improving decision making. Implications for industry arise from unrelated usage and misunderstanding of terminology. The study identifies space for further research into the topic.