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ADU (Accessory Dwelling Unit)
A separate, smaller residential unit on the same lot as a primary residence — attached or detached, with its own kitchen, bath, and entrance.
Definition
What adu (accessory dwelling unit) actually means.
An Accessory Dwelling Unit is a residential unit that's smaller than the primary residence and either attached to the main house (in-law suite, garage conversion) or detached (cottage). Florida's 2026 ADU rules clarified the regulatory framework, with specific setback, parking, and connection requirements per county. ADUs are used for aging family members, adult children, long-term guests, home offices, or rental income depending on local zoning.
Sources
- Florida ADU rules update 2026
- Clay County, Duval County, St. Johns County ADU zoning ordinances
Related terms
Adjacent definitions.
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