New York 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

NYC Local Law 126 (2024) - Legalized ADUs in NYC

Senate Bill S4547A (2025) - Proposed statewide ADU regulations

Assembly Bill A4854 (2025) - Proposed statewide ADU reform

Assembly Bill A6778 (2025) - ADU Incentive Act / forgivable loan program

⚠️Key Requirements & Restrictions

  • •No statewide ADU mandate yet
  • •NYC has local law, rest of state varies by municipality
  • •Statewide legislation proposed but not passed

📖Detailed Analysis

NYC legalized ADUs in 2024 via Local Law 126. Statewide legislation is proposed (S4547A, A4854, A6778) but not yet enacted. Outside NYC, ADU rules vary by municipality.

🔗Official Resources

Planning an ADU in New York?

Use our free tools to analyze your investment opportunity and plan your build.

💰 ROI Calculator✓ Project Checklist
📬

Get New York ADU Law Updates

Laws change fast. Get notified when regulations update in your area.

Browse all states

⚠️ 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.

ADU Tools by MassDwell

Last updated: February 2026