D.C. Code § 16-3112
The Probate Court may render judgment for costs against the unsuccessful party in any proceeding conducted in the court, and issue execution thereof.
Dec. 23, 1963, 77 Stat. 601, Pub. L. 88-241, § 1
Sept. 6, 1980, D.C. Law 3-85, § 5(c), 27 DCR 2900
1973 Ed., § 16-3113.
1981 Ed., § 16-3112.
Fees and costs in civil proceedings, see § 15-701 et seq.