Md. Code, Tax-Prop. § 9-236

(a) The Mayor and City Council of Baltimore City or the governing body of a county or of a municipal corporation may grant, by law, a property tax credit under this section against the county or municipal corporation property tax imposed on real property that is rehabilitated under regulations adopted by the governing body. (b) (1) A property tax credit granted under this section may not extend beyond the first 10 years after the rehabilitation is completed. (2) The amount of a tax credit granted under this section may not exceed the property tax increase attributable to the increase in the assessment of the real property over the assessment before the real property is rehabilitated. (c) The Mayor and City Council of Baltimore City or the governing body of a county or of a municipal corporation may, by law: (1) subject to the limitations under subsection (b) of this section, provide for the amount and duration of a property tax credit granted under this section; (2) limit eligibility for the credit to real property used for specified purposes or to real property located in designated revitalization areas; or (3) otherwise provide additional requirements for eligibility or additional limitations for a tax credit granted under this section.