Freeport, Maine
Freeport, ME Accessory Dwelling Unit (ADU) Rules
City Acceptance Rating: 10/10 (10 is most accepting)
Last updated: 8.6..2024
What You Need To Know
Freeport broadened their rules and streamlined their process to allow for ADUs on all lots in which single family or duplex dwellings exist. One ADU is allowed per single family dwelling, and up to two ADUs can be constructed.
Type of ADU Permit Required
ADUs are permitted by right in Freeport and require a building permit.
ADU Rules
Only one ADU permitted is allowed on any lot containing either one or two existing or proposed single family homes or one duplex.
ADUS can be created in one of the following ways:
Using space within an existing single family home or a duplex.
Building an addition onto an existing single family home or duplex.
Use space in an existing accessory structure (not a shed) that is legally existing on or prior to January 1st, 2024.
Detached ADUs built in a structure built on or prior to January 1st, 2024 must adhere to the minimum setback requirements for single family homes and duplexes.
The ADU cannot be greater than 75% of the gross floor area of the largest existing new or single-family dwelling or largest unit in an existing or new Duplex or 1,100 square feet, whichever is lesser.
Any alterations to accommodate an ADU shall maintain the front entrance and residential character of the existing dwelling. Any additional entrance must appear secondary to the main entrance.
No additional parking is required for the ADU.
Water and wastewater requirements must be met.