Such sidewalk or sidewalks shall be constructed, reconstructed or repaired and such curb cuts, gutters, curb cutbacks and driveways shall be reconstructed according to the plans and specifications, and under the supervision of the city engineer.

The cost of constructing, reconstructing or repairing said sidewalk and the reconstruction of sidewalks, curbs, gutters, curb cuts, curb cutbacks and driveways shall include the cost of preparing plans and specifications and such supervision, and the reasonable costs of engineering services, inspection and administrative services performed by city employees, the cost of an abstract showing the names of owners of affected property, and any clerical costs in making up assessments. (C.O. 17 § 8, 1-30-71.)