What Can You Earn From an ADU in California?
ADU rental income in California ranges from $1,200/month in inland areas to $4,500/month in premium coastal markets. Your actual rent depends on location, ADU size, finishes, and whether you rent long-term or short-term.
2026 ADU Rent Estimates by Region
| Region | Studio/1-Bed ADU | 2-Bed ADU |
|---|---|---|
| San Francisco / Peninsula | $2,800 – $4,500 | $3,500 – $5,500 |
| Los Angeles (Westside) | $2,500 – $3,800 | $3,200 – $4,800 |
| San Diego (Coastal) | $2,200 – $3,500 | $2,800 – $4,200 |
| Sacramento | $1,500 – $2,200 | $1,800 – $2,800 |
| Inland Empire / Central Valley | $1,200 – $1,800 | $1,500 – $2,400 |
ADU ROI Calculator
A quick way to estimate your return:
- Annual gross income: Monthly rent × 12
- Net income: Gross minus insurance (~$1,000/yr), maintenance (~2% of build cost/yr), vacancy (~5%), and property tax increase
- Simple payback: Build cost ÷ annual net income
Example: A $250,000 ADU renting for $2,500/month = $30,000/year gross. After expenses (~$7,000/year), net income is ~$23,000. Payback period: ~11 years. Meanwhile, you've added $150,000–$200,000 to your property value on day one.
Tax Benefits of ADU Rental Income
- Depreciation: Deduct the ADU construction cost over 27.5 years (residential rental property). On a $250,000 build, that's ~$9,000/year in paper losses.
- Operating expenses: Insurance, maintenance, property management fees, utilities (if you cover them) are all deductible.
- Mortgage interest: If you financed the ADU with a HELOC or construction loan, the interest may be deductible.
- Energy credits: IRA Section 45L credits for energy-efficient construction (up to 30% through 2032). Learn about ADU financial incentives.
Long-Term Rental vs. Short-Term (Airbnb)
Long-term pros: Stable income, lower management burden, no furniture costs, no turnover.
Short-term pros: Higher gross income (30–60% more in tourist areas), flexibility to use the space yourself.
Warning: Many California cities have strict short-term rental regulations. LA, San Francisco, San Diego, and Santa Monica all have registration requirements, occupancy limits, or outright bans in certain zones. Always check your city's STR ordinance before planning for Airbnb income.
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