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ADU Rental Income Calculator

Enter your city and ADU size to see your estimated monthly rental income, annual ROI, and how quickly your investment pays for itself.

1Location

Don't see your city? Select the nearest one — rates are similar within the same county.

2ADU Size
430 sq ft
3Bedroom Count
4Rental Strategy
5Build Cost (optional — adjust if needed)
$149,640

Pre-filled at $348/sq ft — NewGen's average all-in cost including permits, foundation, and utilities.

Your Estimated Results · Riverside · 430 sq ft · Studio · Long-Term Rental

Estimated Monthly Rental Income

$1,350/mo

Annual Net Income

$14,580

After ~15% vacancy/mgmt

Annual ROI

9.7%

Cash-on-cash return

Payback Period

10.3 yrs

Based on $149,640 build

10-Year Total

$167,143

Net, with 3% annual growth

Break-even progress (Year 1)9.7% recovered

10-Year Income Projection

YearMonthlyAnnual NetCumulative
Yr 1$1,350$13,770$13,770
Yr 2$1,391$14,188$27,958
Yr 3$1,432$14,606$42,564
Yr 4$1,475$15,045$57,609
Yr 5$1,519$15,494$73,103
Yr 6$1,565$15,963$89,066
Yr 7$1,612$16,442$105,508
Yr 8$1,660$16,932$122,440
Yr 9$1,710$17,442$139,882
Yr 10$1,761$17,962$157,844

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Your ADU could earn $1,350/month

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Disclaimer: These estimates are based on current Southern California rental market data and are provided for informational purposes only. Actual rental income will vary based on property condition, local market conditions, and tenant demand. Short-term rental regulations vary by city — verify local rules before listing. NewGen Development LLC makes no guarantee of rental income.

Why Build an ADU?

Three Reasons Homeowners Are Building Now

Passive Income

A well-placed ADU in Southern California can generate $1,500–$3,000+ per month in rental income — often enough to cover your mortgage payment.

Property Value

ADUs typically add 20–35% to a property's appraised value, making them one of the highest-ROI home improvements available.

Fast Build Time

NewGen's modular ADUs are built off-site and installed in weeks — not months — reducing disruption and getting you to rental income faster.