ADU Builders in Grafton, MA
Accessory Dwelling Units

In Grafton, MA, building an Accessory Dwelling Unit offers homeowners a smart way to enhance property value while addressing the evolving needs of multigenerational families. With the town’s flexible zoning policies, residents can seamlessly add functional living spaces that blend with the community’s charming character.

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ADU builder in Grafton, MA — Regulus Construction

Regulus Construction builds custom ADUs for homeowners in Grafton, Worcester County, and throughout MetroWest.

ADU Types We Build in Grafton, MA

In Grafton, MA, homeowners can choose from several versatile ADU options to suit their needs. Detached ADUs offer complete privacy and a separate entrance, making them ideal for multi-generational living. Attached ADUs provide seamless integration with your existing home while expanding your living space efficiently. Garage conversions transform unused areas into comfortable, functional quarters without altering your home’s footprint, maximizing value without new construction.

Studio ADU in Grafton, MA

Studio ADU

A compact, efficient layout for one person — perfect for a caregiver, aging parent, or rental tenant.

Best for: Single occupancy, minimal footprint

1-Bedroom ADU in Grafton, MA

One-Bedroom ADU

Ideal for aging-in-place, caregivers, or long-term rental use with a private bedroom and full bath.

Best for: Privacy + livability balance

2-Bedroom ADU in Grafton, MA

Two-Bedroom ADU

Best for multigenerational living, small families, or maximizing rental income potential.

Best for: Multigenerational flexibility

Garage Conversion ADU in Grafton, MA

Garage Conversion ADU

Convert an underused garage or build a finished apartment above it into a fully independent living space.

Best for: Using existing structure

Detached ADU in Grafton, MA

Detached ADU

A standalone backyard cottage with maximum privacy and clear separation from the main home.

Best for: Maximum privacy

Attached ADU in Grafton, MA

Attached ADU

An addition connected to your home — ideal when you want shared utility runs and convenient access.

Best for: Efficient utilities + access

ADU interior kitchen and living area in Grafton, MA

Quality Finishes, Built to Last

Navigating ADU zoning and permitting in Grafton, MA involves detailed compliance with local regulations to ensure your accessory dwelling unit meets all town requirements. Our contractor expertly manages every step of the approval process with the Grafton town hall, streamlining your project from application to final permit.

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Our ADU Process in Grafton, MA

Step one invites you to envision your perfect Grafton ADU, where our team blends your ideas with local charm, crafting a design that fits both your lifestyle and neighborhood vibe. Next, we navigate the permit maze on your behalf, transforming bureaucratic hurdles into a smooth, hassle-free green light for your project. Once approvals are in hand, our skilled craftsmen bring your vision to life, orchestrating every nail and beam with precision, so you can watch your new space rise effortlessly. Finally, we stroll through your completed ADU together, ensuring every corner meets your expectations, turning keys into comfort without a single worry.

1. Feasibility & Site Fit

We confirm what your Grafton lot can support: placement, access, utilities, parking, and the path to approvals. You get a clear go/no-go before spending money on drawings.

2. Design & Planning

We translate your goals into a buildable plan — layout, materials, and a detailed scope — structured for a smooth route into permitting and construction.

3. Permits & Approvals

We manage the permit process with Grafton’s Building Department, including plan sets, site plan, energy code documentation, and sewer/septic approvals as applicable.

4. Construction & Closeout

We manage the full build — site work, framing, MEPs, insulation, finishes, and the inspection sequence needed to close the permit and move toward occupancy.

ADU Zoning & Permitting in Grafton, MA

  • Massachusetts law allows one ADU “by right” in single-family zoning districts, subject to reasonable local regulations and building/septic code requirements.
  • ADU size is capped at the lesser of 50% of the principal dwelling’s gross floor area or 900 sq ft statewide.
  • Owner-occupancy requirements cannot be imposed on protected-use ADUs under Massachusetts law.
  • Grafton homeowners should confirm local setback, parking, and permitting requirements with the Building Department before beginning design work.
  • All ADUs require a separate entrance that meets safe egress standards under state building code.

Disclaimer: Zoning and code rules can change, and site conditions vary. We confirm your Grafton property’s requirements early in the process and guide you through a compliant, documented permit path.

Frequently Asked Questions — ADUs in Grafton, MA

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Build Your ADU in Grafton, MA

Ready to add an accessory dwelling unit to your Grafton property? Contact Regulus Construction today for a free, no-obligation consultation. We respond within 24 hours.

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Fill out the form on our contact page and one of our team members will reach out within 24 hours to discuss your project.

Also serving: Ashland, Attleboro, Bellingham, Blackstone, Dover, Easton, Foxborough, Framingham, Franklin, Holliston, Hopedale, Hopkinton, Mansfield, Marlborough, Medfield, Medway, Mendon, Milford, Millis, Millville.