Subject to subsection (b) of this section, an annexation resolution may be introduced in the legislative body of the municipality in accordance with: the requirements and practices applicable to its legislative enactments; and the requirements of § 4–303(a) of this title. Before an annexation resolution is introduced, the legislative body shall obtain consent from: at least 25% of the registered voters who are residents in the area to be annexed; and the owners of at least 25% of the assessed valuation of the real property in the area to be annexed. The annexation resolution: shall describe by a survey of courses and distances the exact area to be annexed; may also describe by landmarks and other well–known terms the exact area to be annexed; and shall contain a complete and detailed description of the conditions and circumstances that apply to: the change in boundaries; and the residents and property in the area to be annexed.