11 Pa.C.S. § 12930: Power to grade, pave and macadamize.

(a) General rule.--A city may grade, pave, macadamize or otherwise improve any street, and the sidewalks of the street when included as a part of the improvement, have them set with curbs and provide for drainage.

(b) Improvement.--A city may provide for the following improvements of any street, in length, in the space between the curb, gutter or cartway and the property line:

(1) An original work or improvement.

(2) A change, repair, renewal or alteration in the street or curb.

(3) Parking spaces.

(4) Shade trees.

(5) Changing, altering, renewing, replanting, pruning or otherwise making improvements in an item listed under paragraph (1), (2), (3) or (4).