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The aim of this study was to investigate the occurrence and distribution of <i>Salmonella</i> in commercial layer farming environments of 26 flocks belonging to seven egg businesses (free-range and barn-laid) in Western Australia (WA). Between November 2017 and June 2018, a total of 265 environmental samples of dust, feed, water, pooled feces, and boot swabs were tested for detection of <i>Salmonella</i> according to standard culture-based methods. Isolates were assayed for serovar and subtyped by multilocus sequence typing (MLST). <i>Salmonella</i> spp. were recovered from 35% (93/265) of all tested samples. Dust (53.8%, 28/52) and pooled fecal (54.5%, 18/33) samples provided the highest <i>Salmonella</i> recovery rates. Nine different <i>Salmonella</i> serovars were characterized across the positive (<i>n</i> = 93) environmental samples, of which <i>S.</i> Typhimurium (60/93, 64.5%) and <i>S.</i> Infantis (21/93, 22.5%) were the most prevalent. MLST revealed that all <i>S</i>. Typhimurium isolates were of sequence type ST-19. Microbiological screening of <i>Salmonella</i> was not routinely practiced in any of the surveyed egg businesses. Some of the egg businesses exhibited variable levels of compliance with basic biosecurity measures as well as high-risk egg handling practices. Egg businesses in WA should be encouraged to adopt a voluntary program of environmental sampling and verification testing for <i>Salmonella</i>. Such voluntary programs will aid in supporting solutions for the management of this pathogen in the human food chain.