The commissioner shall render his decision in writing, in accordance with the contested case provisions of Chapter 54 of the General Statutes and regulations referred to above within ninety days of close of the proceedings, or after thirty days after the receipt of any data the close of the rehearing, the subsequent submission of a late file, the subsequent submission of a memorandum of law, or the receipt of the hearing transcript, whichever is later.
Conn. Agencies Regs. § 17-311-106