Does the property service company have the right to fine the owners for littering and building?

No, fine is a kind of administrative punishment. The establishment and implementation of fine must be based on the Administrative Punishment Law and cannot violate the provisions of the law. Article 15 of the Administrative Punishment Law stipulates that administrative punishment shall be implemented by administrative organs with the power of administrative punishment within the scope of statutory functions and powers, and property service companies are not administrative organs.