Churches as an unpreferred use

This is a tough one, because you have to code this very carefully due to the Religious Land Use and Institutionalized Persons Act, which says that local land use regulations have to treat religious uses equally.

Storefront churches are one of the scourges of inner city commercial districts, and their prevalence is a function of, for the most part, low rents and lack of demand for commercial space.

The solution is to have a conditional use permit procedure for all non-retail uses, including office, with a bias to retail, in retail commercial districts. A bias toward retail in a retail district is legal.

cf. "God's Row," from the New York Times.