ADU vs. In-Law Suite: What’s Right for Your Cape Cod Property?

As housing needs change, many Cape Cod homeowners are looking for ways to add flexible living space—whether for family, guests, or rental income. Two popular options are Accessory Dwelling Units (ADUs) and in-law suites. Understanding the difference can help you choose the best fit for your property.

What Is an ADU?

An ADU is a self-contained living unit on the same property as an existing home. It typically includes its own entrance, kitchen, bathroom, and sleeping area. ADUs can be detached cottages, additions, or garage conversions and are ideal for multi-generational living, rental income, or aging in place while staying close to family.

What Is an In-Law Suite?

An in-law suite is usually connected to the main house—think a finished basement, over-garage apartment, or first-floor bedroom suite. It may share some systems or spaces with the main home but still offers more privacy and independence than a standard bedroom.

Key Factors: Privacy, Budget & Zoning

If maximum privacy and potential rental income are priorities, an ADU may be the better choice. If you prefer closer integration with the main home or have a tighter budget, an in-law suite might make more sense. Either way, zoning, lot size, and local regulations will influence what’s possible on your Cape Cod property.

Why Work With a Cape Cod ADU Specialist

Designing and building an ADU or in-law suite involves navigating permits, utilities, and structural considerations. Watkins Works specializes in ADUs on Cape Cod, offering site evaluation, permitting support, custom design, and energy-efficient construction tailored to coastal conditions—so you can make the most of your property with confidence.