Maryland Code, Tax-Property § 14-509

(b) For property assessed by a supervisor, on or before 30 days from the date of determination by a supervisor, on a petition for review by a supervisor, the owner may appeal the value or classification in the determination to the property tax assessment appeal board where the property is located.

(c) On or before 30 days from the date of the final determination, any taxpayer may appeal a final determination of a property tax credit or relief under §§ 9-101, 9-102, and 9-104 of this article, to the property tax assessment appeal board where the property is located.

(d) The landowner or the Maryland Agricultural Land Preservation Foundation may appeal the value of an easement determined under § 2-511 of the Agriculture Article to the property tax assessment appeal board where the property is located.

(f) If the requirements of subsection (a), (b), (c), (d), or (e) of this section are met, the property tax assessment appeal board shall hold a hearing, as provided under § 14-510(b) of this subtitle.

(g) Unless the property owner requests a postponement under § 1-402 of this article, for a dwelling as defined in § 9-105 of this article, the property tax assessment appeal board shall hold a hearing within 120 days after receiving a request for an appeal.

(h) For any appeal under this section in which the value of property is at issue, at least 10 days before a hearing on the appeal, the Department and the taxpayer shall exchange any written appraisals to be used for the purpose of placing a value on the property.