Introduction

Build AR 2.0 is a BIM-based augmented reality (AR) solution that integrates aerial drone technology to provide large-scale, high-precision construction visualization. Using drones equipped with high-resolution cameras and GPS, it overlays BIM data onto real-world environments in real time, maintaining distortion-free spatial alignment. The system supports both marker-based and markerless tracking, allowing flexible deployment without complex setup. Unlike traditional AR limited to ground-level views, Build AR 2.0 extends visualization to building, block, and city scales. It enables accurate design review, construction progress monitoring, as-built verification, and urban planning, as well as infrastructure inspection and disaster response. Large BIM datasets are converted into lightweight formats for rapid streaming, while real-time collaboration tools allow remote and on-site teams to coordinate instantly. By combining aerial data capture, advanced spatial matching algorithms, and web-based collaboration, Build AR 2.0 improves decision-making, enhances safety, reduces rework, and increases efficiency in complex, high-impact projects.