1. (1) The whole cost of improvement.
2. (2) The whole cost of improvement not aided or contributed to by the Federal Government, the Commonwealth, the county or a corporation.
3. (3) Any part of the cost.

A township may improve streets, portions of streets or a particular width or additional widths of streets, with or without the assistance or contribution of the Federal Government, the Commonwealth, the county or a corporation occupying the thoroughfare, and may assess and collect the following from the owners of real estate abutting on the improvement in accordance with Chapter 63 (relating to assessments for public improvements):