'Customary home occupations' is obviously followed by 4 examples. That is not only the only reasonable interpretation, but also one that will hold up under legal scrutiny. If the author wished to mean otherwise, semicolons would not help (in fact, their use would be wrong here), but the list would have to be rearranged: Trade persons, cottage industries, bed-and-breakfasts, and c ustomary home occupations such as offices of recognized professions.
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