It is zoned under the Baltimore County Zoning Regulations ("BCZR") as "Density Residential 3.5." In this zone, churches are permitted as of right subject to certain conditions, including that parking lots and structures are (1) set back 75 feet from tract boundaries, and (2) separated from adjacent lots by a 50-foot landscaped buffer.
This advice was of course correct because churches are "permitted as of right," provided that their site plans comply "to the extent possible with [applicable] requirements" and can "otherwise be expected to be compatible with the character and general welfare of the surrounding residential premises." BCZR 1B01.1.A.3, 1B01.1.B.1.g.(6).