ADUs · August 4, 2026 · 6 min read
Can You Build an ADU on Your Property? How Feasibility Works in RI & MA
Almost every ADU conversation starts the same way: can we even do this here? Feasibility answers that question before you spend money on design, and it is the single most useful step a homeowner can take first.
What feasibility actually looks at
Feasibility is a practical review of the property, not a legal opinion. We look at the physical and regulatory conditions that decide most projects long before a floor plan matters.
- Lot size, shape and usable yard area
- Setbacks and separation from existing structures
- Septic capacity or sewer connection
- Water, electrical service and gas availability
- Driveway, access and parking
- Grading, ledge, wetlands and drainage
- How the existing home is positioned on the site
State law sets the floor, your town fills in the rest
Rhode Island and Massachusetts both have statewide ADU laws that protect certain unit types and sizes. Local zoning, utility departments and health agents still shape what a specific property can support, which is why two neighbors can get different answers.
We treat state law as the starting point and the property as the deciding factor.
Why feasibility comes before design
Plans drawn before anyone has confirmed septic capacity or setbacks are plans that often get redrawn. Doing feasibility first keeps design money pointed at a direction the property can actually support, and it gives you an early, realistic budget expectation instead of a surprise later.
Wondering what your property could support?
Tell us about the property and what you’re hoping to accomplish in Rhode Island or Massachusetts. We’ll help you understand what’s realistic.
Prefer to talk? Call or text 401-388-3889.