"Will It Make Money?"
See rental projections and ROI analysis
before you break
ground.
Know your returns upfront. Make decisions with confidence.
Why ADU ROI Matters
An ADU isn't just a construction project — it's an investment. Like any investment, you need to know the numbers before you commit.
$150K-$350K Investment
The average ADU in MA/RI costs between $150,000 and $350,000. That's not money you gamble with — you need to know it'll pay off.
35% Property Value Boost
ADUs typically increase property values by 25-35%. But the actual return depends on YOUR property, YOUR market, and YOUR ADU design.
5-8 Year Payback
Most ADUs pay for themselves in 5-8 years through rental income. After that? Pure profit in your pocket every month.
What Factors Into Your ADU ROI?
ROI isn't just "rent minus mortgage." Smart investors look at the complete picture:
Construction Costs
Total build cost including permits, design, site work, and finishes
Financing Costs
Interest payments, loan fees, and opportunity cost of your capital
Rental Income
Monthly rent based on local market rates for comparable units
Property Appreciation
Increased home value from the ADU addition
Operating Expenses
Maintenance, insurance, property management, vacancy
The Smart Investor's View
Annual pre-tax cash flow divided by total cash invested. Target: 8-12%+
Net operating income divided by property value. Measures pure investment return.
How many months until rental income covers your total investment.
Combined return from rental income + property appreciation over a decade.
When Does an ADU Make Financial Sense?
Green Light Indicators
- Strong rental market — Local rents support $1,500-$3,000+/month for ADU-sized units
- Equity available — You can tap home equity or have cash reserves
- Long-term hold — You plan to stay in your home 5+ years
- Property appreciation area — Your neighborhood values are rising
- Multi-use potential — Family housing, rental income, or future sale value
Proceed with Caution
- Weak rental demand — Low rents that won't cover your costs
- High-interest environment — Financing costs eating into returns
- Short timeline — Planning to sell in under 3 years
- Over-leveraged — Already stretched thin financially
- Zoning restrictions — Limitations that reduce ADU value potential
ADU ROI Calculator
Enter your numbers below to see projected returns, break-even timeline, and long-term investment analysis.
Your Numbers
Typically 60-80% of construction cost
Insurance, maintenance, vacancy reserve (~10-15% of rent)
Monthly Breakdown
Strong Investment Potential
Your projected returns exceed typical investment benchmarks. This ADU could be a solid wealth-building move.
Ready to Make It Real?
The ROI Calculator is just one tool in the ADU Financial Command suite. Get the complete picture with detailed financing options, budget planning, and more.