ADU comparisons
Long-term vs short-term rental ADU: rules first
By the HyreADU research desk. Last checked .
The short answer
Long-term vs short-term rental for an ADU starts with what your city allows.
California lets local agencies require that ADUs be rented only for terms of 30 days or longer (Gov. Code § 66315), and ADUs approved by right under § 66323 must be rented for more than 30 days.
Where short stays are allowed, they bring more work, turnover and local permits.
| Factor | Long-term lease | Short-term stays |
|---|---|---|
| Allowed in California | Yes | Only where the city allows it and the ADU type permits |
| Minimum term rules | Meets 30-day minimums | Often barred by 30-day minimums |
| Work for the owner | Lease, repairs, rent collection | Cleaning, booking, guest messages |
| Local permits and taxes | Landlord rules | Often a short-term rental permit and occupancy tax |
| Share of California ADUs used this way (2021 survey) | About half earned rental income | 8 percent used for short-term rental |
When a long-term lease wins
A long-term lease wins wherever short stays are barred, which covers many California ADUs. It also wins for owners who want steady rent with less work. Estimate rent from HUD Fair Market Rent and local listings using the ADU rent estimator.
When short-term stays can work
Short stays can work where your city issues short-term rental permits for ADUs, often for an older unit or one not built under a by-right path. Expect a permit, occupancy tax and house rules.
The 2021 UC Berkeley survey of California ADU owners found 8 percent used their unit for short-term rental. Read ADU Airbnb income for how to estimate it honestly.
Check before you list
Ask your planning department three questions in writing: does the 30-day minimum apply to my ADU, is a short-term rental permit available, and does my HOA allow it. Our short-term rental rules research covers what major cities do.
A mistake to avoid
The mistake to avoid is budgeting on short-stay income before checking whether short stays are allowed at all. Many California ADUs are subject to a 30-day minimum, and cities enforce short-term rental rules through permits, taxes and fines. Get the planning department’s answer in writing for your address before you plan around either income.
What to do next: check your lot with the ADU feasibility checker, read the questions to ask an ADU builder, then tell us about your project. Matching is not live yet, so we reply with information, not a quote.
Get ADU optionsQuestions
Can I Airbnb my ADU in California?
Only if your city allows it and your ADU is not subject to a 30-day minimum. Many are.
What is a medium-term rental?
Stays of 30 days or more, such as traveling nurses. They can meet a 30-day minimum.
Which earns more?
We publish no income figures. Model both on your own numbers in the ADU ROI calculator.
Do tenant protection laws apply to an ADU?
Often, depending on the state and city. We give no legal advice; read the local rules.
Sources
- Gov. Code § 66315 (no extra standards; rentals of 30 days or longer). Checked September 5, 2026.
- Gov. Code § 66323 (ADUs a city must approve ministerially). Checked September 5, 2026.
- Chapple, Ganetsos and Lopez, Implementing the Backyard Revolution, UC Berkeley Center for Community Innovation (2021). Checked September 5, 2026.
- HUD Fair Market Rents, FY2026. Checked September 5, 2026.
HyreADU is a publisher. It does not design, permit or build ADUs, has no partner builders, and gives no legal, tax, lending or engineering advice.
Rules vary by state and city; California rules are labeled as such. Spotted an error? Tell us through our corrections page. Licensed professionals can also contribute as named sources.