A rating system for building condition ranking

Purpose. Do people know everything about their asset? The aim of this work is to give to building process stakeholders some Key Performance Indicators (KPIs) able to help them during the decision process, which characterises operation, maintenance and repair phases. These KPIs are intended to be included inside a rating system developed by the authors. Background. There are many different types of evaluation techniques, from empirical to theoretical and from internal to external; most of the assessment techniques found in literature can be categorised among them. Others described some methods, different for objectives and measuring parameters: qualitative evaluation criteria, cost-driven KPIs and physical state ones in combination with standards and regulation compliance. Rating system can be implemented in Building Condition Assessment. Approach. This work highlighted the necessity of mainly two types of KPIs: one (technical index) to assess building condition in terms of aging and anomalies of its components; the other (documents index) to describe the quality and quantity of available building documents taking into account legal requirements. In addition to these indexes, a set of standardised repair alternatives has been defined. Results. Output of this system is the current asset situation picture, with indication of missing documents, serious anomalies and interventions needed to restore required performances. Three layouts (synthetic, by technological units, detailed) are targeted to different users’ categories. Practical implications. This research is focused on building rating and maintenance operations selection. Future development will study benchmarks for economic, law compliance and environmental assessment. Originality. The originality of this work stays in the possibility of quickly evaluating an asset, obtaining a list of criticalities, to be connected with major works, ready to be scheduled and performed.