North Carolina ADU Laws

Complete 2026 guide to accessory dwelling unit regulations

○Local Control Only

📋Quick Facts

Owner Occupancy
May be required
Parking
Set locally
Approval Process
Varies locally

📜Recent Legislation

HB 409 (2023) - Proposed statewide ADU mandate - Passed House, died in Senate committee

S495 (2025) - New proposed statewide ADU reform - max size cannot be set below 800 sqft

⚠️Key Requirements & Restrictions

  • •No statewide ADU law
  • •Rules vary entirely by municipality and county
  • •Must comply with NC State Residential Building Code
  • •Some areas require off-street parking for ADUs

📖Detailed Analysis

No statewide ADU law. HB 409 (2023) passed the House but died in Senate Rules committee (April 2023). New S495 (2025) proposes statewide reform requiring local governments to allow at least one ADU per single-family dwelling, with minimum allowable size of 800 sqft. Currently local control: Raleigh has ADU ordinance, Wake County requires ADUs to have own kitchen/sanitation/sleeping and one off-street parking space. ADUs reviewed under NC State Residential Building Code when resulting in 2 units per parcel. Legislative momentum building but no statewide mandate yet.

🔗Official Resources

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⚠️ Disclaimer

The information provided on this website is for general informational purposes only and does not constitute legal, financial, or professional advice. ADU laws, regulations, and requirements vary by jurisdiction and change frequently. While we strive to keep this information accurate and up-to-date, we make no representations or warranties of any kind about the completeness, accuracy, reliability, or suitability of this information. Always consult with qualified local professionals, including attorneys, architects, and your local planning department, before making any decisions regarding ADU construction or investment. Use of this information is at your own risk.

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Last updated: February 2026