ADUs are having a moment — and for good reason!
At Top Notch Contracting, we specialize in designing and building high-performance Accessory Dwelling Units (ADUs) across Massachusetts. Whether you’re planning a detached backyard cottage, garage conversion, in-law suite, or multigenerational living space, our team delivers custom ADU solutions built for long-term value, energy efficiency, and modern living.
As an experienced Massachusetts ADU builder, we guide homeowners through every stage of the process — from planning and permitting to construction and final completion. Our approach combines advanced building science, transparent project management, and high-quality craftsmanship to create functional spaces that fit your property and lifestyle.
From basement conversions to detached backyard units, our ADUs are built with purpose and precision.
Client: Local nonprofit organization
Location: Greater Boston
Specs: Fully electric | ADA-compliant layout | Energy-efficient envelope
Our active ADU project highlights our commitment to both social impact and sustainable design. Designed for long-term performance, this project meets both the client’s accessibility needs and our high-performance building standards.
There’s never been a better time.
Whether you’re a homeowner looking to expand or a property owner exploring rental options, Top Notch can help you:
A closer look at the policy changes making it easier to add value, flexibility, and housing through ADUs.
Contact us today for a free consultation and site evaluation.
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