Livestock including goats, sheep, horses, cattle, and pigs are generally prohibited on standard residential lots in Gaithersburg. Montgomery County Zoning Ordinance Chapter 59 restricts livestock keeping to agricultural (AR) and rural residential zones with minimum lot sizes that far exceed typical Gaithersburg residential parcels. Most of Gaithersburg is zoned R-60, R-90, R-200, or townhouse/multifamily, none of which permit traditional livestock. Miniature goats and pygmy goats have been discussed in county zoning text amendments, but no broadly applicable residential exception currently exists for Gaithersburg's zoning categories. Chickens are regulated separately under the county's poultry provisions with specific conditions on numbers, setbacks, and rooster prohibition. Rabbits kept as household pets in small numbers are generally permitted, but breeding operations or large colonies would require agricultural zoning. Any animal kept on residential property must comply with nuisance, odor, and sanitation standards. Montgomery County Animal Services enforces livestock restrictions and responds to complaints about prohibited animals on residential properties.
Gaithersburg's residential zoning districts fall under the Montgomery County Zoning Ordinance (Chapter 59), which carefully distinguishes between household pets and livestock or farm animals. The standard residential zones that cover the vast majority of Gaithersburg (R-60, R-90, R-200, TMD, CRN, and various planned development zones) do not permit the keeping of horses, cattle, goats, sheep, pigs, llamas, alpacas, donkeys, or other traditional livestock. These animals are classified as agricultural uses and restricted to the Agricultural Reserve (AR) zone, which requires a minimum lot size of 25 acres and is located primarily in the northern and western portions of Montgomery County far from Gaithersburg's boundaries. The Rural Residential (R) zone also permits livestock with appropriate lot sizes and setbacks, but this zone does not exist within Gaithersburg city limits. Some exceptions have been explored through county zoning text amendments (ZTAs) for miniature goats or pygmy goats as accessory agricultural uses in larger-lot residential zones, but no amendment currently provides a broadly applicable exception for the residential zones found in Gaithersburg. Properties in planned unit developments with specific site plan conditions should check those conditions for any additional restrictions beyond the base zoning. Chickens are handled separately from general livestock in Montgomery County zoning. The county permits backyard hens (up to 6, no roosters) on residential lots meeting certain size and setback requirements, including a minimum distance of 30 feet from neighboring dwellings and 5 feet from lot lines. Rabbits kept as household pets in small numbers (typically 2 to 4) are generally allowed under the household pet provisions of the zoning code and are not classified as livestock. However, breeding rabbits commercially, maintaining a large colony, or keeping rabbits for meat production would likely be classified as an agricultural activity requiring appropriate zoning. All animals kept on residential property must comply with nuisance, odor, and sanitation standards. Manure storage, drainage, and pest control are particular concerns that code enforcement monitors. Montgomery County Animal Services responds to complaints about prohibited animals and can issue violation notices requiring removal within a specified timeframe. The county also participates in the Maryland Department of Agriculture animal health programs, which require certain livestock to be identified and tested for diseases like tuberculosis and brucellosis before sale or transport.
Keeping prohibited livestock on residential property: code enforcement notice to remove animals within specified deadline (typically 10 to 30 days). Continued violation: escalating fines. Nuisance complaints (odor, noise, unsanitary conditions) can trigger immediate inspection and separate penalties.
See how other cities in Montgomery County handle livestock.
See how Gaithersburg's livestock rules stack up against other locations.
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