New Jersey 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

S1106 (2024-2025) - Proposed statewide ADU standards - in committee

A2792 (2024-2025) - Companion bill - committee substitute Feb 2025

S345 (Sen. Troy Singleton) - Earlier statewide ADU proposal

⚠️Key Requirements & Restrictions

  • •No statewide ADU law yet
  • •Rules vary entirely by municipality
  • •Must engage with local town planning departments
  • •Historical preservation can limit ADUs in some towns

📖Detailed Analysis

No statewide ADU law. S1106/A2792 proposed for 2024-2025 session would authorize ADUs by-right in single/two-family zones with statewide standards. Currently in committee (Feb 2025). Local leaders: Princeton allows ADU sales as standalone properties, Montclair has ADU ordinance, Maplewood restricts ADUs on historic properties. Housing crisis driving legislative momentum - NJ faces significant affordability challenges.

🔗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