Home Rule transfers the authority to make laws from the state government to local government. Pennsylvania began allowing municipalities to adopt Home Rule charters in 1972. The PA Department of Community and Economic Development summarizes Home Rule in this way:
“The basic concept of Home Rule is relatively simple. The basic authority to act in municipal affairs is transferred from state law, as set forth by the General Assembly, to a local charter, adopted and amended by voters… Local governments without Home Rule can only act where specifically authorized by state law; Home Rule municipalities can act anywhere except where they are specifically limited by state law.” (Source: Home Rule in Pennsylvania – PDF)