D.C. Mun. Regs. tit. 17, § 2319
2319.1 A licensee shall retain records of appraisal, analysis, and review assignments, including oral testimony, in the following manner:
(a) For a period of at least five (5) years after preparation of the report generated by the activity; or
(b) If a report was the subject of or used for litigation purposes, and testimony was given, the report shall be kept for two (2) years after final disposition of any judicial proceeding in which testimony was given.
2319.2 A licensee shall, upon demand or request by the Board, promptly produce any document, book, or record concerning any appraisal that the licensee or certificate holder performed.
SOURCE: Final Rulemaking published at 40 DCR 8480 (December 10, 1993); as amended by Final Rulemaking published at 53 DCR 5846 (July 21, 2006); as amended by Notice of Final Rulemaking published at 58 DCR 10590, 10599 (December 16, 2011).