Guide
ADU Rental Income: What to Realistically Expect
Actual rental ranges for California ADUs by city, how to run the numbers on your project, and what landlord costs people overlook.
One of the most common questions homeowners ask before starting an ADU is: what will it actually rent for?
The answer depends heavily on location, size, and the quality of the unit. Here are real-world rental ranges across California, along with how to run the numbers on your own project.
Rental Ranges by City (2025-2026)
These are typical monthly rents for a 1-bedroom, 600–800 sq ft ADU in a standard residential neighborhood. Premium locations (closer to transit, in more desirable neighborhoods) run higher. More basic finishes or less desirable locations run lower.
| City | Studio | 1 Bedroom | 2 Bedroom |
|---|---|---|---|
| San Francisco | $2,200–$2,900 | $2,800–$3,800 | $3,800–$5,000+ |
| San Jose | $1,900–$2,500 | $2,400–$3,200 | $3,200–$4,200 |
| Los Angeles | $1,600–$2,400 | $2,000–$3,000 | $2,800–$4,000 |
| Santa Monica | $2,000–$2,800 | $2,600–$3,500 | $3,400–$4,500 |
| Oakland | $1,700–$2,400 | $2,100–$2,900 | $2,800–$3,800 |
| San Diego | $1,700–$2,400 | $2,100–$2,900 | $2,800–$3,800 |
| Sacramento | $1,200–$1,700 | $1,600–$2,200 | $2,000–$2,800 |
| Long Beach | $1,500–$2,100 | $1,900–$2,600 | $2,400–$3,200 |
| Pasadena | $1,600–$2,200 | $2,000–$2,800 | $2,600–$3,600 |
To calibrate for your specific neighborhood, look at current listings on Zillow and Apartments.com for comparable units nearby. Recent actual rents are more accurate than any guide.
Running the Numbers
A simple back-of-napkin calculation:
Gross annual rental income: monthly rent x 12
Vacancy allowance: Subtract 5–8% for the time between tenants and occasional months you can't fill the unit. A 1-bedroom at $2,200/month with 6% vacancy = $2,200 x 12 x 0.94 = $24,816 effective annual income.
Operating expenses: Rough categories and typical annual amounts for an ADU:
- ›Maintenance and repairs: 1–2% of build cost per year ($1,500–$4,000)
- ›Property management (if hired): 8–12% of gross rent ($2,100–$3,200 for a $2,200/month unit)
- ›Insurance (add to homeowner's policy or separate landlord policy): $500–$1,200/year
- ›Property tax increase: Roughly 1% of construction cost per year ($1,500–$3,000 for a $200K ADU)
Net operating income (NOI): Gross rent minus vacancy minus operating expenses.
Example: 1-bedroom ADU in LA, $2,400/month rent, $220,000 build cost, self-managed.
- ›Annual gross: $28,800
- ›Vacancy (6%): -$1,728
- ›Maintenance (1.5%): -$3,300
- ›Insurance: -$800
- ›Property tax increase: -$2,200
- ›NOI: $20,772
A $20,772 annual return on a $220,000 investment is a 9.4% net yield. That's before financing costs.
If you're borrowing to fund the ADU at, say, 7% on a HELOC, your annual interest on $220,000 is roughly $15,400. After interest, you're clearing about $5,000 per year in actual cash flow while building equity in the property.
What Changes the Math Significantly
Self-managing versus hiring a property manager: Managing it yourself saves 10% of gross rent annually. For most people who live on the same property, self-management is practical.
Furnishing the unit: Furnished ADUs in the right markets (near universities, tech campuses, hospital workers) can command 20–40% higher rents. They also attract shorter-term tenants and require more active management.
ADU size: A 2-bedroom ADU typically rents for 30–50% more than a studio, but the incremental build cost for that extra bedroom is usually less than the incremental rent premium. Running both scenarios when you're deciding on the design is worth the time.
Build cost: Keeping build costs down protects your yield. A $150,000 ADU returning $15,000 per year is a 10% yield. A $350,000 ADU returning the same $15,000 is a 4.3% yield.
California Rent Control Considerations
State law (AB 1482) applies rent control to some ADUs, but there are important exemptions. Single-family homes with an ADU are exempt from AB 1482 if the owner occupies the property and provides proper notice to tenants.
Local rent control ordinances in cities like Los Angeles, San Francisco, Oakland, and Santa Monica apply to properties built before a certain date. Most newly constructed ADUs are exempt from local rent control. Check your city's specific ordinances.
Long-Term and Short-Term Rental (Airbnb)
Some homeowners consider short-term rentals for higher monthly income. The math can work in tourist markets and high-demand urban areas, but short-term rental laws in California have tightened significantly.
Many cities now require permits for short-term rentals, limit the number of nights per year, or prohibit them in ADUs on residential lots. Los Angeles, San Francisco, and Santa Monica all have restrictions. Check your city's rules before planning around this income model.
Long-term tenants tend to be lower-effort and more predictable. For most ADU investors who are also living on the property, a stable long-term tenant is the better starting point.
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