X-tendo introductory reports: Building Logbook
Building logbooks are repositories for detailed building information. They act as a single point of input, access and visualisation of all the information associated with a building unit throughout its lifecycle.
Over the lifespan of buildings, data is routinely collected by multiple stakeholders for various reasons as many decisions rely on data availability. However, there is a lack of a common approach and structure among stakeholders which would make this wealth of information widely available, organised and easily accessible. Much of the data collected goes unused as it gets discarded or forgotten or is not compatible with other stakeholders’ systems. The lack of an overarching structure shared across the built environment leads to information asymmetry, lack of transparency and higher risk for investment and renovation decisions.
Logbooks enable better decision-making throughout the building lifecycle, including management of technical and functional aspects, safety, conservation of economic value, certification, and improved energy and environmental performance. Organised and shared data reduces uncertainty but also the time and cost needed for collecting missing information. In this sense, building logbooks can reinforce the successful implementation of all other X-tendo features.
Availability of granular performance and maintenance data in addition to the energy performance certificate (EPC) could provide a more robust and reliable indication of energy performance and reduce data gaps about the building performance. Logbooks can enhance the overview of the entire building stock at all levels, allow public authorities to better tailor various measures, set benchmarks and strategies, as well as monitor progress towards climate goals (including through the national long-term renovation strategies).
Scope of application: The building logbook is a common information management tool applicable across all building types. Certain data fields may be more relevant for a certain building type and commercial (or larger) assets may have more granular data collected and stored in the logbook compared to residential buildings. Equally, certain logbook functionalities and benefits are more important for specific real estate sectors and stakeholders. Notwithstanding the different needs, the logbook data model should apply consistently to the entire building stock.
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