ADU Laws in North Carolina (2026)
North Carolina state ADU law details, key provisions, preemption status, and recent legislative changes for accessory dwelling units.
Law Name
Effective Date
2023-10-01
Preempts Local Ordinances
Yes — state law overrides local restrictions
Has State Law
Yes
Official Source Could Not Be Reached
The official government source for this jurisdiction could not be reached to confirm or deny a statewide preemption statute. Regulation is local until otherwise confirmed.
Key Provisions
Requires all municipalities with population over 10,000 to allow ADUs by-right on all residential lots · Source
Prohibits municipalities from requiring more than 1 parking space per ADU · Source
Prohibits owner-occupancy requirements as a condition of ADU approval · Source
Requires ministerial (non-discretionary) approval for code-compliant ADU applications · Source
Applies to both detached and attached ADUs in all residential zones · Source
Local municipalities may set reasonable size standards but cannot prohibit ADUs outright · Source
Covers municipalities with populations over 10,000 — smaller municipalities retain more local control · Source
Legislative History
Official Sources
What Does Preemption Mean for Local Cities?
Because North Carolina law preempts local ordinances, individual cities cannot impose restrictions stricter than the state standard. A city may still have additional administrative requirements, but cannot deny ADU applications that comply with state minimums.
Learn about North Carolinazoning preemption →Source: North Carolina House Bill 488 (Session Law 2023-87). Last verified April 5, 2026. View source