Norwell MA
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The Trusted Accessory Dwelling Unit (ADU) Builder in South Shore MA
At J. McSharry & Sons, we believe your home should grow with you. Whether you’re creating a welcoming in-law suite, a private guest house, or a rental space for extra income, an Accessory Dwelling Unit (ADU) offers a smart and flexible way to expand your living area while staying right where you belong. ADUs have become one of the most practical ways to expand living space and increase property value across Massachusetts. With an ADU, you can:
As the trusted ADU builder on the South Shore MA, our team brings more than 50 years of experience to every project. We combine thoughtful planning, skilled craftsmanship, and personalized service to create ADUs that feel like a natural extension of your home, that are beautiful, functional, and built to last. Before starting, we will help you evaluate:
Featured Projects
From new home builds to transformative renovations, we bring craftsmanship and care that South Shore families have trusted for decades.
Most Popular Types of ADUs We Build
At J. McSharry & Sons, we plan and build every accessory dwelling unit to fit your property, lifestyle, and local zoning requirements. Whether you’re looking for a private in-law suite, rental apartment, or flexible living space, our team brings decades of experience to every project.
A standalone structure built on your property, offering complete privacy and independence — ideal for guests, family members, or rental income.
A newly constructed addition that shares one wall with your existing home but has its own entrance, kitchen, bath, and living space. Perfect for expanding without building a separate structure.
Transform an unused garage into a beautiful apartment or studio space while maximizing the footprint of your property.
Add valuable living space above an existing or new garage — a smart way to gain square footage without altering your yard.
Convert your lower level into a self-contained living space with its own entrance, kitchen, and bathroom. A great option for multi-generational living or rental use.
Repurpose underused interior space — such as an attic, bonus room, or portion of your home — into a fully independent unit that blends seamlessly into the home’s layout.
Each ADU type offers unique advantages depending on your goals, property layout, and local zoning. Our team will help you explore all available options to find the perfect fit for your vision and budget.
Our ADU Building Process From Start to Finish
Our 5-step process keeps your build organized, efficient, and stress-free:
1
Consultation & Site Evaluation
Every great project begins with a conversation. We listen to your goals, review your property, and assess local zoning regulations in your town to ensure your ADU is feasible and properly permitted.
2
Planning & Permitting
We help you develop a layout that fits your needs — whether it’s a detached ADU, above-garage apartment, or basement conversion — and handle all permitting and inspection coordination with South Shore building departments.
3
Construction
Our experienced team manages every phase — excavation, framing, electrical, plumbing, roofing, and finish work — using the same high-quality materials and craftsmanship that have defined J. McSharry & Sons for decades.
4
Interior Finishing
We complete your ADU with efficient systems, modern finishes, and thoughtful details — including kitchenettes, bathrooms, HVAC, lighting, and trim work — creating a comfortable and fully livable space.
5
Final Walkthrough & Handover
Before completion, we perform a detailed walkthrough to confirm every element meets our quality standards — and your expectations. The result: a fully finished ADU, move-in ready and built to last.
We Go Above and Beyond
From the first conversation to the final walkthrough, we’re committed to exceeding expectations every step of the way.
We’ve built and remodeled homes throughout the South Shore MA area for more than five decades, with deep familiarity of local permitting and zoning regulations.
Every ADU we build starts with your goals. We tailor the plan, layout, and finishes to fit your property, lifestyle, and long-term vision, helping to ensure your new space feels like a natural extension of your home.
From the initial consultation through construction and final finishes, our team coordinates every detail to bring your vision to life.
Our ADUs are built with the same care, precision, and structural integrity as our custom homes.
You’ll receive clear communication, honest budgeting, and updates at every stage.
As a local South Shore builder, we take pride in treating every home as if it were our own.
Our Commitment to Quality
Satisfaction Guaranteed
50 Years Experience
Work Backed by Warranties
Family Owned and Operated
Free Consultation
Fully Licensed and Insured
Bring your vision to life. Schedule a free consultation today!
J. McSharry & Sons
Norwell, MA 02061
P: (781) 783-4449
E: Contact Us
J. McSharry & Sons is a trusted general contractor and custom home builder serving South Shore MA. For over 50 years, we’ve provided construction, renovation, and land development services across Massachusetts, bringing visions to life with unmatched craftsmanship and care.
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