(A) At the City Council's direction, the subdivider may be required to install improvements for the benefit of the subdivision which may be of such supplemental size, capacity, number, or length as will benefit property not within the subdivision. Such improvements may be a condition precedent to the approval of a subdivision or parcel map.
(B) The subdivider will be reimbursed for that portion of the costs of those improvements, including an amount attributable to interest, in excess of the construction required for the subdivision.