The US Fire Administration (FEMA) has published a report on non-residential fires. Over 100 000 fires in non-residential buildings in the USA are reported annually, causing around 90 deaths, 1 350 injuries and 2.4 billion US$ property losses, that is one fifth of total property losses from all fires. Non residential buildings include a wide range of properties: public buildings, restaurants, stores, offices, industry, storage, detached private garages … The most significant identified causes of fires were cooking, other unintentional/carelessness, electrical malfunction and intentional (arson). The most significant identified first ignited item was structural building components and finishes, with electrical cables and exterior sidewall covering showing as specific items first ignited. Smoke alarms were present in less than half of the non-confined fires in these buildings.
“Nonresidential Building Fires (2014-2016)” FEMA, Topical Fire Report Series, July 2018, volume 19, issue 3 https://www.usfa.fema.gov/downloads/pdf/statistics/v19i3.pdf