Trumbull, Conn., Mun. Code ch. 2, art. III, div. 3 § 2-133

(a) Upon the filing of a complaint, the commission shall, within ten (10) business days notify all parties in writing of the receipt of the complaint. Such notice shall also inform the parties that the landlord is prohibited from retaliating against the tenant due to the filing of the complaint. It shall also inform the parties that, until a decision on the complaint is made by the Commission, the tenant's liability shall be for the amount of the last rent prior to the increase complained of or, if there is no such increase, the last agreed-upon rent, and that an eviction based upon non-payment of rent cannot be initiated against a tenant who continues to pay the last agreed-upon rent during the pendency of the Commission proceeding.
(b) If a complaint alleges housing conditions that violate a housing, health, building or other code or statute, the Commission shall notify the appropriate municipal office or agency, which may then concurrently exercise its own powers. In addition, the Commission may request that the appropriate municipal official or agency promptly investigate and provide a report to the Commission.
(c) A hearing on the complaint shall be scheduled no later than thirty (30) days after the filing of the complaint, unless impracticable. Written notice of the date, time, and place of the hearing shall be given to the parties to the complaint at least ten (10) calendar days prior to the hearing by first class and certified mail and, if practicable, by electronic mail.
(d) All parties to a hearing shall have the right to be represented by an attorney, to cross-examine witnesses, to examine documents introduced into evidence, and to call witnesses and introduce evidence. The testimony taken at a hearing shall be made under oath. Hearings shall be recorded.
(e) The Commission shall render its decision at the same meeting at which the hearing on the complaint is completed or within thirty (30) days following such date, unless impracticable.