Any complaint filed pursuant to sections 7-148i to 7-148n, inclusive, and subparagraph (B) of subdivision (9) of subsection (c) of § 7-148 shall be made under oath. No finding of a violation of a local code of prohibited discriminatory practices shall be made except after a hearing conducted in person or by means of electronic equipment. The respondent at any such hearing shall be given reasonable advance written notice of the hearing, shall be entitled to be represented by counsel, and shall be permitted to testify and present and cross-examine witnesses. The decision resulting from the hearing shall be in writing and shall include written findings of the facts upon which the decision is based.