Maryland Code, Local Government § 20-117

(a) Except as provided in subsection (b) of this section, a claimant may appeal to the Maryland Tax Court, within 30 days after the date on which a notice under § 20-116(c) of this subtitle is given, in the manner allowed in Title 13, Subtitle 5, Parts IV and V of the Tax--General Article.

(b) If a claimant is not given notice under § 20-116(c) of this subtitle within 6 months after the claim is filed, the claimant may: