D.C. Code § 34-2405.03
The Assessor of the District of Columbia shall give notices as herein provided of the levying of assessments for water mains and service sewers. Assessments shall be levied within 60 days after the completion of the main or service sewer, and the owner or owners affected by such assessments shall be notified that the same have been levied by a notice which shall be served upon the owner of the lot or parcel of land if he or she be a resident of the District of Columbia, and his or her residence be known. If the owner be a nonresident or his or her residence be unknown, the notice shall be served on his or her agent or tenant. The service of such notice, where the owner or his or her agent or tenant resides in the District of Columbia, shall be personal or by leaving the same with some person of suitable age, either a member of his family or in his employ, at the residence or place of business of such owner, agent, or tenant; and return of such service, stating the manner thereof, shall be made in writing under oath and filed in the office of the Assessor of the District of Columbia. If there be no agent or tenant known to said Assessor, and the owner or owners be not residents of the District of Columbia, or if the owner be a resident of the District of Columbia and cannot be found therein, and no person of suitable age as aforesaid can be found at his or her residence or place of business, notice shall be given by advertisement once a week for 3 successive weeks in some daily newspaper published in said District, and in said publication of said notice each several piece of property shall be described in a separate paragraph, and the cost of such advertisement shall be added to the amount of said assessment and collected in the same manner that said assessment is collected.
D.C. Code § 34-2405.03
Office of Assessor abolished: The Office of the Assessor was abolished and the functions thereof transferred to the Board of Commissioners of the District of Columbia by Reorganization Plan No. 5 of 1952. All functions of the Office of the Assessor including the functions of all officers, employees and subordinate agencies were transferred to the Department of General Administration by Reorganization Order No. 3 of the Board of Commissioners, dated August 28, 1952. Reorganization Order No. 20, dated November 10, 1952, abolished the Office of the Assessor and transferred the functions to the Finance Office in the Department of General Administration. The same order provided that an Office of the Assessor would be created in the Finance Office. Reorganization Order No. 20 was superseded and replaced by Organization Order No. 121, dated December 12, 1957, provided that the Finance Office (consisting of the Office of the Finance Officers, Property Tax Division, Revenue Division, Treasury Division, Accounting Division, and Data Processing Division) shall continue under the direction and control of the Director of General Administration, and prescribed the functions thereof. The executive functions of the Board of Commissioners were transferred to the Commissioner of the District of Columbia by § ,401 of Reorganization Plan No. 3 of 1967. Organization Order No. 121 was revoked by Organization Order No. 3, dated December 13, 1967, Part IVC of which prescribed the functions of the Finance Office within a newly established Department of General Administration. Functions of the Finance Office as stated in Part IVC of Organization Order No. 3 were transferred to the Director of the Department of Finance and Revenue by Commissioner's Order No. 69-96, dated March 7, 1969. Functions pertaining to centralized accounting as set forth in Commissioner's Order No. 69-96 were transferred to the Director of the Office of Budget and Financial Management by Organization Order No. 30, dated April 5, 1972. The Office of Budget and Financial Management was replaced by Organization Order 50, dated December 31, 1974, which Order established the Office of Budget and Management Systems. The Office of Budget and Management Systems was replaced by Mayor's Order 79-5, dated January 2, 1979, which Order established the Office of Budget and Resource Development.