Md. Code, Pub. Util. § 21-206

(a) (1) With the declaration of taking, the Commission shall pay to the owner of the land or interest in land, or to the Circuit Court for Prince George’s County for the owner’s benefit, a sum that the Commission estimates to be the fair market value of the land or interest in land being taken. (2) The Commission’s estimate of the fair market value of the land or interest in land being taken may not be less than its appraised value as evaluated by at least one experienced and qualified appraiser, whose qualifications as an appraiser have been accepted by a court of record of the State. (b) Payment of the estimated fair market value of land or interest in land under this section does not limit the amount that may be awarded with respect to the land or interest in land. (c) If the estimated fair market value of the land or interest in land is paid into the court under subsection (a) of this section, the property owner, on written request to the clerk of the court, may receive the sum paid without prejudice to any of the owner’s rights if the property owner agrees to pay back to the Commission the amount by which the sum paid exceeds the final award.