Typical Costs
Rhode Island rental ADU costs typically range from $80,000 to $200,000 depending on the size of the unit, the complexity of utility connections, and the finish level. We provide honest, site-specific estimates before you commit.
Your Rhode Island Property Can Generate Rental Income. Here's What That Actually Looks Like.
An ADU on your existing property can produce meaningful monthly income — without requiring you to move, sell, or take on a second mortgage on a new property.
The rising cost of housing across Rhode Island and Massachusetts has created real demand for rental units at every price point. If you own a property with available lot space — even a small yard — you may already be sitting on a significant income opportunity without realizing it.
A rental ADU (Accessory Dwelling Unit) is a self-contained, permitted residential unit on your existing property. It can take the form of a detached cottage, an above-garage apartment, a converted basement unit, or a side-by-side addition. Done correctly, it can generate $1,000 to $2,500+ per month in rental income, depending on size, location, and finish level.
Rhode Island's 2025 Affordable Homes Act has made more properties ADU-eligible than at any point in recent history. We'll confirm what's possible on your specific lot before you spend time or money planning.
What to Expect
Typical Income
A one-bedroom Rhode Island ADU in a well-located area typically rents for $1,200 to $2,000 per month. A two-bedroom unit can reach $1,800 to $2,800 per month. We'll help you estimate realistic income for your specific location.
Typical Timeline
From initial consultation to a certificate of occupancy, most Rhode Island ADU projects take 6 to 12 months, with permitting taking 4 to 8 weeks depending on the municipality.
How We Handle It
- Lot feasibility and zoning research to confirm what's legally permitted on your property
- Site design and architectural coordination
- Full permitting management with the municipality
- Licensed construction from foundation to finish
- Optional: real estate guidance on setting rental rates and finding qualified tenants