We are pleased to announce that on August 27th Elsevier (Science Direct) published the peer-reviewed final paper, Building Commissioning Costs and Savings Across Three Decades and 1500 North American Buildings. This paper is the result of a two-year collaborative effort between Lawrence Berkeley National Laboratory (LBNL) and the Building Commissioning Association (BCxA) to acquire, analyze and organize building- and systems-specific commissioning data; to understand cost and savings trends; and to identify changing attitudes toward commissioning by owners and stakeholders.
Findings show that the median costs of Cx were lower for the 2018 sample than for the 2009 sample—$2.85 per square meter ($0.26 per square foot) for existing buildings (a 33 percent reduction) and $8.78 per median simple payback time for existing buildings was 1.7 years, with a 25th–75th percentile range of 0.8–3.5 years. This paper summarizes these and other key findings, and discusses how the 2018 data reflects shifts in commissioning practice and outcomes. For example, the table below trends owners’ responses for why they pursue existing building commissioning.