AB 559 – Clearer Rules for ADU Construction
Stronger protections. Safer choices. Smarter projects.
AB 559 brings much-needed clarity and consumer protection to California’s growing ADU market by officially defining Accessory Dwelling Unit (ADU) construction as “home improvement” work under state law. That means ADU contractors are now held to the same oversight and standards that apply to traditional home renovations—helping homeowners avoid scams, fraud, and unqualified builders.
This change is especially important as ADU construction becomes more common—and as new, less experienced contractors enter the market to meet rising demand.
What This Means for Homeowners Planning an ADU
If you're thinking about building an ADU, AB 559 makes the process safer and more transparent.
Key Benefits:
ADU construction is now legally defined as “home improvement,” which triggers protections under California’s home improvement law,
Contractors must provide written contracts with clear scopes of work, payment schedules, and cancellation rights,
Stronger enforcement and licensing oversight from the Contractors State License Board (CSLB),
Easier resolution of disputes and more legal recourse in cases of fraud or misrepresentation,
More consumer confidence when entering a major investment like building an ADU.
This law doesn’t slow down construction—it makes the entire experience more secure for homeowners trying to do the right thing.
How New Avenue Homes Can Help
New Avenue has always operated with full transparency, licensed professionals, and clear contracts—so AB 559 simply reinforces the best practices we already follow.
Here’s how we protect your project:
We use fixed-price contracts with detailed scopes of work so there are no surprises,
We only work with licensed, vetted contractors and manage them directly,
We provide transparency at every stage, from feasibility and budgeting to final inspection,
Our platform gives you easy access to timelines, communications, and billing all in one place—no hidden costs, no missing documents.
With New Avenue, your ADU project is handled with the professionalism and protection you deserve.
Ready to Build Your ADU with Confidence?
Schedule your free consultation today to learn how AB 559—and New Avenue’s transparent, end-to-end process—can help you build a high-quality ADU without the worry.
