D.C. Mun. Regs. tit. 9, r. 9-308
If the Deputy Chief Financial Officer determines that, in order to carry out the functions and responsibilities of the Mayor under the Act, facts in the possession of a property owner should be made available, the Deputy Chief Financial Officer may, by written notice to the property owner, require the owner to provide such facts as, in the discretion of the Deputy Chief Financial Officer, will assist the Deputy Chief Financial Officer to determine the estimated market value of the property.
Information provided in response to the notice given under § 308.1 shall be given on the form prescribed by the Deputy Chief Financial Officer.
In the absence of any extension of time granted by the Deputy Chief Financial Officer, the information filed in accordance with §§ 308.1 and 308.2 shall be filed with the Deputy Chief Financial Officer within thirty (30) days from the date on which the written notice was mailed to the property owner.
Any information obtained from a property owner pursuant to this section concerning any income derived from investment or income-producing real property shall be handled in the same confidential manner as is provided in paragraphs (a), (b), (c), and (d) of D.C. Code § 47-1805.4 (1981 Ed.).
Any violation of the provisions of § 308.1 shall be a misdemeanor and shall be punishable by a fine not exceeding one thousand dollars ($1,000) or imprisonment for six (6) months, or both, in the discretion of the Court.
All prosecutions under this section shall be brought in the Superior Court of the District of Columbia on information by the Corporation Counsel of the District of Columbia (or an Assistant Corporation Counsel) in the name of the District of Columbia.
D.C. Mun. Regs. tit. 9, r. 9-308