Build an ADU in Rhode Island with Toensing Construction
Expand your living space, boost property value, or generate rental income with a beautifully crafted accessory dwelling unit (ADU). Whether you’re planning an in-law suite, a guest house, or a garage conversion, we handle everything from permitting to finishing touches.
📍 Serving Providence, Barrington, Bristol, Newport, and surrounding Rhode Island towns.
What Is an ADU — and Why Build One?
An accessory dwelling unit (ADU) is a self-contained living space built on the same lot as your main home. It can be:
A converted garage or outbuilding
A new addition or separate backyard cottage
A basement apartment or over-garage suite
Perfect for multigenerational living, rental income, aging in place, or remote work.
Our ADU Services Include:
Garage-to-apartment conversions
Detached backyard ADUs and guest houses
Over-garage studios or rental units
Basement apartment buildouts
In-law suites and caregiver spaces
Full permitting and zoning navigation
Utilities, kitchens, baths, and code compliance
We'll help you determine what type of ADU your property supports — and walk you through the zoning and design process.
ADU Construction in Providence, Bristol & Beyond
From urban neighborhoods in Providence to historic lots in Bristol and coastal zoning in Barrington, ADU rules vary by town — and we know how to navigate them.
We’ve helped homeowners across Rhode Island plan and build code-compliant, efficient ADUs that blend with their homes and meet long-term needs.
🔗 Explore Our Home Additions →
🔗 Learn About Our General Contracting Support→
Why Choose Toensing Construction for Your ADU?
Rhode Island licensed general contractor
Start-to-finish planning, permitting, and project management
In-house carpenters known for precision and craftsmanship
Experienced with tight zoning and historic property challenges
Clear, honest communication throughout the project
Our ADU Design & Build Process
Site Consultation & Feasibility Review
Design Planning & Zoning Review
Permit Filing & Timeline Setup
Build Phase with Quality Control
Final Inspection & Walkthrough
We collaborate with your architect or provide full design-build support to streamline your ADU from idea to occupancy.
FAQs About ADUs in Rhode Island
Are ADUs legal in Rhode Island?
Yes — but local zoning laws vary. We’ll check your town’s ordinances and guide you through what’s possible on your lot.
How much does it cost to build an ADU in RI?
Costs vary depending on type and size, but most projects range from $100,000–$300,000. We provide detailed estimates before work begins.
Can I convert my garage into an ADU?
In many towns, yes — and it’s often one of the most cost-effective options.
Let’s Build Your Accessory Dwelling Unit
Contact us today to explore the potential of adding an ADU to your Rhode Island property. We’ll guide you every step of the way — from vision to move-in ready.
