ADU & In-Law Suite Builder in Massachusetts

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Finished accessory dwelling unit interior in Massachusetts
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Accessory Dwelling Units & In-Law Suites

Massachusetts now allows accessory dwelling units (ADUs) by right in single-family zones statewide — making it easier than ever to add an in-law suite, a rental, or a private space for grown kids. BDaniel General Construction Corp builds ADUs across Massachusetts as basement and garage conversions, attached suites, and detached units — complete with their own kitchen, bath and entrance.

An ADU adds real value and flexible living space to your property, whether you want multigenerational living today or rental income down the road. We handle design, permits and the full build.

  • In-law / multigenerational suites
  • Basement & garage conversions
  • Attached & detached ADUs
  • Full kitchens, baths & private entrances
Why Homeowners Choose Us

Your ADU, Handled End to End

We Know the Rules

We build to the new statewide ADU law and your town’s requirements.

Independent Living

Full kitchen, bath and private entrance for true independence.

Adds Value

Flexible space for family now or rental income later.

Licensed & Insured

MA HIC Reg. #216567 and fully insured on every project.

How We Work

Our ADU Building Process

From first idea to a fully independent living space — we guide you through it all.

1. Plan & Design

We assess your property, review local ADU rules and design a layout that fits your goals.

2. Permits & Approvals

We handle permitting and code requirements for a legal, inspection-ready unit.

3. Build

Framing, kitchen, bath, utilities and a private entrance built to a high standard.

4. Final Walkthrough

We pass final inspection and hand over a move-in or rental-ready living space.

FAQ

ADU Questions

Can I build an ADU in Massachusetts now?

In most cases, yes. State law now permits one ADU by right on single-family lots, though towns set details like size and parking. We’ll confirm what applies to your property.

What types of ADUs do you build?

Basement and garage conversions, attached additions and detached backyard units — each with its own kitchen, bathroom and entrance.

Can I rent out my ADU?

Generally yes under the new law, subject to local rules. Many homeowners use an ADU for family first and rental income later.

Do you handle permits and design?

Yes — we manage design, engineering and all permits, then build the unit start to finish.

Considering an ADU or In-Law Suite?

Tell us about your property and how you’d use the space — we’ll schedule a free on-site consultation.

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