ADU Town Regulations
Bath, ME
Apr 8, 2024
Last Updated
About
Bath, Maine, is a historic city located in Sagadahoc County, known for its maritime heritage and scenic location along the Kennebec River. As of October 2024, the city has an estimated population of 8,766 residents. Bath is often referred to as the "City of Ships" due to its long history of shipbuilding, which continues today with the presence of Bath Iron Works. The city offers a mix of beautiful waterfront parks and a charming downtown area featuring a variety of shops, restaurants, and cultural attractions, making it an appealing destination for both residents and visitors to explore and enjoy.
ADU Rules
One (1) ADU is permitted per property that currently contains a primary dwelling unit.
The ADU can be built attached to or within the preexisting primary dwelling or as its own freestanding structure.
ADUs may only be built on properties in which the primary dwelling unit is either a single-family home or a duplex.
The ADU must be clearly accessory to the primary dwelling.
An ADU may be no larger than 850 square feet or 80% of the square footage of the primary residence, whichever value is lower.
An ADU may have at maximum two bedrooms
Each ADU requires at least one on-site parking space additional to the required parking for the primary residence. This requirement can be waived in the instance of an established off-site parking agreement.
ADUs must consider the privacy of the ADU and neighboring residences in their design.
DUs may not exceed the height of the primary dwelling.
ADUs may not be used as a rental property for leases less than 90 days.
All ADUs must receive permits before construction from the Code Enforcement Office if attached to the primary dwelling, or the Planning Board if detached.
All ADUs must meet the minimum requirements for a dwelling in relation to other ordinances not specific to ADUs, and must provide basic facilities for living, sleeping, cooking and sanitation.