Monroe Township (Gloucester County), NJ Accessory Structures: Garage Conversions (2026)

Living space in or above a garage in Monroe Township, Gloucester County, is controlled by the accessory buildings section of the Land Management chapter, § 175-89. Subsection G(4) states that all living units are prohibited over or attached to garages, except garages attached to residential dwellings, unless the unit is an approved accessory dwelling unit permitted by § 175-157J(3)(a). Subsection A adds that any accessory building attached to a principal building is part of the principal building and has to meet the yard requirements for it. Subsection C bars any business, service or industry inside a private garage, with the one exception of lawfully permitted home occupations under § 175-111.

The accessory dwelling unit route is the one the Township Council wrote into the code, and it carries conditions. The unit is a small apartment that is part of an existing single-family owner-occupied home, with a kitchen, a bathroom and no more than one bedroom. Only one accessory dwelling unit is permitted per lot, and it sits in the same building as the principal dwelling or in a building accessory to it. Any structure containing the unit must meet the minimum yard and setback requirements for the principal structure. The maximum floor area is 1,000 square feet or 1/3 of the living space of the principal dwelling, whichever is less.

Process and occupancy rules follow. The Zoning Officer issues the zoning permit, and Planning Board approval is not required. The property owner must show an adequate potable water supply and a septic system adequate for the added load before a building permit issues, and the unit has to comply with all applicable health and construction codes before occupancy. It is intended as year-round housing, so it cannot be used for short-term occupancy of fewer than 12 months. The owner must live in either the principal unit or the accessory unit as a principal residence and at no time receive rent for the non-owner-occupied unit. One off-street parking space is required for each vehicle registered to occupants of the one-bedroom unit, in addition to the principal dwelling's parking, and the design has to keep the architectural style and character of the main building.