Subject to Section 223 of the Constitution of Alabama of 1901, if considered appropriate by a council, the cost of an assessment may be levied on property in proportion to, or based upon, front feet, or square footage of each parcel, acreage, its estimate of the increase in value of the property resulting from the improvements for which the assessment was made, or in accordance with the methodology determined by the district and approved by the appointing government therefor.
Ala. Code § 11-99A-30 (1975)