No requirement of this part that an agent maintain within this state a place of business which is accessible to the public shall be deemed to prohibit the maintenance of such a place of business in connection with the place of residence of either the agent or of other persons, if:
(1) A separate room is set aside by the agent for, and is actually used as, the office or place of business;
(2) Such room is easily accessible to the public and is in fact in the usual course of business used by the agent in his or her dealings with the public; and
(3) The existence of such place of business is suitably advertised, as determined by the department.