The smart home concept integrates automation, security, energy efficiency, and comfort, promoting an environmentally friendly and improved living experience. This study examines the factors influencing the adoption of technology for smart homes by extending the Unified Theory of Acceptance and Use of Technology (UTAUT2) model. Incorporating five external variables (convenience and comfort, health and wellbeing, security and safety, sustainability, and privacy) into the model, this research offers a comprehensive understanding of the determinants affecting individuals’ intention to use technology for smart homes. A survey of 795 individuals, including households from various age groups and levels of urbanization, was conducted to ensure a representative analysis. The results indicate that all external variables positively impact the core UTAUT2 variables. Habit has the strongest effect on intention to use, followed by performance expectancy and personal innovativeness. Along with hedonic motivation and social influence, these variables explain 76.9% of the variance in intention to use smart home devices. This research contributes added value by extending the UTAUT2 model with five external variables, addressing gaps in previous literature, and utilizing a diverse sample group, ultimately providing a more comprehensive knowledge of the factors influencing the adoption of smart home technology.