(a) General rule.--If council elects to collect the cost, including any administrative fees, of any improvement on the front foot basis, the cost to be collected shall be divided by the total number of linear feet of street frontage of each property benefited, and there shall be assessed against each property that portion of the cost which is determined by multiplying the dividend of the prior calculation by the number of linear feet for street frontage of that property.

(b) Certificate of assessment.--Council shall issue a certificate of assessment when assessing on the front foot basis duly certified under the seal of the borough and attested by the president of council and secretary. The certificate of assessment shall be prima facie evidence in any suit for recovery of the same of the correctness and validity of the assessment.

(c) Adjustments in assessments.--Notwithstanding subsection (a), council may make equitable adjustments for corner lots, lots of irregular shape or, where special conditions exist, where an assessment for full frontage would be unjust.