Complete 2026 guide to accessory dwelling unit regulations
SB 477 (2024) - Renumbered ADU code sections
AB 2533 (2024) - Updated ordinance requirements
SB 1211 (2024) - New local ordinance standards
AB 462, AB 1154, SB 9, SB 543 (2025) - Further reforms
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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.
ADU Tools by MassDwell
Last updated: February 2026