When the Commission acquires an existing water or sewer system other than a municipal system, the Commission may impose a front foot benefit charge less than the uniform front foot benefit charge required in § 25-204 of this subtitle if:

(1) the construction cost of the system has been added, wholly or partly, to the purchase price of the property that abuts on the system; and

(2) the addition of the construction cost is a factor in the cost of the system to the Commission.