In construction, defect management represents a crucial yet manually intensive task, demanding meticulous documentation. Our work introduces an Augmented Reality (AR) application enhancing defect management through digital documentation and real-time comparison with the construction site's digital twin. We collected the requirements for our app in a 1-day workshop (n = 5) and explored the application in a field study (n = 5). Our findings unveil the application's potential to streamline the defect management process, primarily facilitated by integrating LiDAR sensor data on iPads, and employing AR for defect oversight. Our work contributes to (i) utilizing LiDAR sensor information alongside AR for improved defect management, (ii) empirical insights into the application context and domain knowledge, and (iii) the merits of web-based interfaces and integrated data spaces and, thus, the digitization of the construction industry through Human–Computer Interaction technologies and approaches.