Accessory Dwelling Units (ADUs)
An Accessory Dwelling Unit, or ADU, is a secondary housing unit located on the same grounds as a primary residence. Think of it as a mini home-within-a-home, providing homeowners with an additional living space that's separate from the main house.
ADUs come in various forms, from converted garages and basements to standalone cottages or apartments above a detached garage. They offer a flexible solution for homeowners looking to maximize their property's potential, whether it's for accommodating family members, generating rental income, or creating a private retreat.
These versatile structures can serve multiple purposes, acting as a guesthouse, home office, rental property, or even a space for aging parents or adult children. With the rising demand for affordable housing and sustainable living, ADUs have emerged as a popular choice for homeowners seeking to adapt their properties to changing needs and lifestyles.
At J Burgess we specialize in designing and building custom ADUs that seamlessly integrate with your existing property while meeting your specific requirements and aesthetic preferences.
Interested in building an ADU?
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The cost of building an ADU in Massachusetts can vary widely depending on the size, design, and finishes you choose, but most homeowners can expect to invest between $150,000 and $300,000 for a detached unit. Smaller garage conversions or basement ADUs may come in on the lower end of that range, while fully detached, custom-built ADUs with high-end finishes will cost more.
Several factors affect ADU costs:
Size & Layout – A studio or one-bedroom ADU will be less expensive than a two-bedroom design with a full kitchen and bath.
Site Conditions – Existing utilities, grading, and access to the building site can increase or reduce costs.
Design & Materials – Custom finishes, cabinetry, and energy-efficient upgrades add long-term value but affect upfront pricing.
Permitting & Code Requirements – Every ADU must meet local zoning, building, and energy codes, which can influence design and cost.
At J. Burgess Remodeling, we work with homeowners across Plymouth and the South Shore to design and build ADUs that fit both their budget and lifestyle. Whether you’re adding space for family, creating a rental opportunity, or investing in long-term property value, our team provides clear estimates and guidance through every step of the process.
If you’re considering an ADU, contact us for a personalized consultation so we can give you an accurate estimate based on your property and goals.
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An ADU is a smaller, independent residential unit on the same lot as a single-family home, typically no larger than 900 sq. ft or 50% of the main house's size.
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Zoning laws vary. As of February 2025, new state regulations will simplify the approval process, making it easier to add ADUs in certain areas.
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No, recent law changes removed the requirement for owner-occupancy in many municipalities. text goes here
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Yes, but it cannot be used as a short-term rental in most cases.