Understanding Massachusetts’ New ADU Legislation

Build Smarter, Live Better — With More Flexibility Than Ever

Massachusetts has recently passed new statewide legislation that legalizes Accessory Dwelling Units (ADUs), giving homeowners more freedom to expand and enhance their properties. Whether you're thinking about a detached backyard cottage or an attached in-law suite, these new laws make it easier to create custom living spaces that fit your goals and lifestyle.

Detached vs. Attached ADUs

Tailor Your ADU to Your Property and Purpose

Now that zoning restrictions have loosened, you can choose the ADU layout that works best for you.

• Detached ADUs offer complete privacy and flexibility, perfect for rental units, guest cottages, or independent family housing.

• Attached ADUs (such as garage or basement conversions) allow for more direct access to the main home, ideal for multigenerational living or extended suites.

Our team will help you evaluate what’s possible based on your lot, layout, and long-term vision.

Permitting, Zoning & Project Guidance — Done For You

We Make the ADU Process Seamless

Navigating new rules and local interpretations of state law can be tricky — but that’s where we come in. As one of the leading ADU builders in Massachusetts, CZ Construction Management handles everything from zoning reviews to permit approvals. We manage the red tape so you can focus on the big picture: building a smart, beautiful, functional space.

Now’s the Time to Maximize Your Property Value

With Barriers Removed, Opportunity Is Wide Open

This legislation has removed the biggest obstacles to building an ADU in Massachusetts. Now is the ideal time to invest in a high-end, thoughtfully designed unit that adds value to your property, creates income potential, and gives you the flexibility to support your family in new ways.

Let’s build something that works for your future — and adds serious value today. Try our Greater Boston Cost Calculator Below.