Md. Code, Tax - Property § 8–414

(a) If an appeal is filed under § 8-411 of this subtitle or if a petition for review is denied, the Department or supervisor shall give written notice of the final value or classification determined by the Department or supervisor to the person who has appealed or filed a petition for review.

(b) The final notice shall notify the person of the right to appeal the final value or classification to the next higher assessing authority on or before 30 days from the date of the final notice. The notice shall contain the name and address of the next higher assessing authority.