Land Use & Zoning

In Maine, an accessory dwelling unit (ADU) added to a single-family property is best described as:

AA separate legal parcel
BA secondary housing unit on the same lot as the primary dwelling✓ Correct
CA commercial use requiring rezoning
DA unit only for family members

Explanation

An ADU (also called an in-law unit or accessory apartment) is a secondary housing unit on the same lot as a primary dwelling. Maine has encouraged ADU development to increase housing supply.

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