## 3 Results
### Thematic Analysis of Selected Articles
#### 3.2.2 Digital Building Logbook Applications in the Building Lifecycle Phase
Digital building logbooks facilitate long-term data management by ensuring that all relevant information about the building is consistently recorded and maintained [25; 27; 38; 39; 43; 44]. By recording the operational and maintenance history of buildings, they improve their performance and lifespan, and \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Phases** & **Applications** & **Number of Papers** & **References** \\ \hline Design phase & Material information repository, & 6 & [25; 43; 44; 45; 47] \\  & Integration with BIM & & \\ \hline Construction phase & Building data repository, & 3 & [25; 43; 44] \\  & Decision making & & \\ \hline Operation (building management) phase & Monitoring, & & \\  & Energy improvement, & 11 & [25; 26; 27; 29; 31; 33; 38; 39; 43; 44; 45] \\  & Predictive maintenance, & & \\  & Decision making & & \\ \hline End of life & Building diagnosis, & 8 & [25; 43; 44; 45; 43; 45] \\  & Renovation decision making & & \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Applications of digital building logbook throughout lifecycle phases in the construction industry. they are essential for effective facility management. In fact, this allows facility managers to implement predictive maintenance strategies, optimize energy efficiency, and ensure responsible resource utilization [27; 31; 43; 44]. In addition, performance monitoring is another typical application [31; 33]. The use of the digital building logbook for managing building lifecycle data, integrating them with digital twin models, enables the continuous monitoring of building performance over time, offering real-time feedback that can be used for more effective decision making in terms of better building performance and maintenance scheduling [26; 27; 29; 45]. Finally, by providing data on building characteristics, technical conditions, and operational information, the digital building logbook helps improve building management, increase profitability, extend the building's life cycle, allow for building diagnosis, and guide decisions on whether to refurbish, repurpose, or demolish the building and how to optimize material recycling [25; 33; 39; 43; 45]. With the increase in renovation activities, the concept of the Building Renovation Passport (BRP), or renovation passports, has been introduced as well. This is specifically designed for existing buildings undergoing phased renovations. While there is no standardized model for the BRP, it is widely agreed that it should include two main components: a digital building logbook that consolidates all building-related information and a renovation roadmap that guides owners through the steps needed to achieve zero-emission buildings by 2050 [44]. Among the articles reviewed, 8 of the 25 analyzed papers deal with the renovation phase. In particular, ALDREN logbook, iBroad Building Logbook, and Libro del Edificio Electronico propose a renovation roadmap, supporting the deep renovation of buildings. ALDREN outlines long-term renovation strategies for non-residential buildings based on quality criteria and energy audits, helping property owners avoid the lock-in effect and meet CO2 reduction targets [40]. The iBroad Building Logbook is closely connected to the iBroad Renovation Roadmap, creating a comprehensive toolset for tailoring building renovations, particularly for residential buildings [37]. The LdE-e supports the development of a Scheduled Renovations Roadmap (SRR), which outlines a timeline for necessary renovations. This structured approach helps in organizing renovation activities, ensuring that they are carried out systematically and in alignment with building performance goals [39].