District of Columbia Code Division VIII. General Laws. § 47-823. Assessments--Preliminary roll; public inspections and copying of material; sales ratio studies; listing of assessed values.

(b) The estimated assessment roll, together with all maps, field books, assessment-sales ratio studies, surveys, and plats, shall be open to public inspection during normal business hours. In addition, any notes and memorandums relating to the assessment of his real property, or a statement clearly indicating the basis upon which his real property has been assessed, shall be open to inspection by the owner or his designated representative during normal business hours. Provision shall be made to furnish copies of all material to any person, upon request, at the lowest charge which covers cost of making such copies.

(c) The Mayor shall undertake, publish, and otherwise publicize the results of assessment-sales ratio studies for different types of real property for the entire District and for different types of real property within each of the districts utilized in making assessments. If, for a given year, adequate sales data are lacking for particular studies, the Mayor shall so indicate.

(d) The Mayor shall, either himself or in a newspaper of general circulation, publish a listing of the assessed value of each property by address, lot, and square, and he shall also make such listing available at the main Public Library in the District and at such other points as he may determine. Such publication can be by neighborhood areas so long as maps showing the assessment areas are generally available.

(e) The estimated assessment roll, sales price information, description of each property, owner's mailing address, property use information, valuation history, other information in the public record, and information not made confidential in this chapter may be published by the Mayor by any form of electronic media, including the Internet.