Size of property doesn't come into play in St. Mary's until you build a barn.
FAQ #6: How many animals may I have on my property?
Our zoning ordinance does not regulate the number of animals kept for agricultural activities.
However, animal husbandry operations must maintain adequate fencing or other means of
confinement (CZO Section 51.3.3.a.1).
Animals kept for personal enjoyment are not regulated by the zoning ordinance except when
shelter is provided for hoofed animals. A stable requires at least three acres of land. If a stable is
provided, two “large animals” per acre are permitted (CZO Section 51.3.119). “Large animal” is
not defined.
FAQ #5: Do I need a permit to build a barn?
A permit is not required to construct a building for agricultural purposes if the structure is to be
located outside the Critical Area. The building must comply with required setbacks of at least 5
feet from the side and rear property lines (CZO Schedule 32.1 footnote 4) and be separated from
all other structures by at least 10 feet (CZO Section 51.2.4.c). It may not be located in the
required front yard setback. It must be located at least 10 feet away from a septic
system/easement and at least 15 feet away from any well. Septic and well setbacks may be
reduced by the Health Department in some circumstances.
An environmental permit is required to construct an agricultural building if the structure is to be
located in the Critical Area.
A private stable (not related to the ordinary operation of a farm), is considered an agricultural
building for permitting purposes. A minimum lot size of 3 acres is required. The structure must
be located at least 100 feet from side or rear lot lines (CZO Section 51.3.119).
http://www.co.saint-marys.md.us/lugm/docs/LUGMFAQ.pdf
