The rector of a church, under the authority of the local ordinary and observing the legitimate statutes and acquired rights, is obliged to see to it that sacred functions are celebrated worthily in the church according to the liturgical norms and prescripts of the canons, that obligations are fulfilled faithfully, that goods are administered diligently, that the maintenance and beauty of sacred furnishings and buildings are provided for, and that nothing whatever occurs which is in any way unfitting to the holiness of the place and the reverence due to a house of God.
Source: Code of Canon Law (Vatican.va)