Awaiting expert review. This page covers rules that vary by state and local jurisdiction. It is kept out of search results until a qualified reviewer has checked it; the sources below are dated so you can verify each point.
Quick answer
An ADU owner-occupancy requirement is a local rule that the property owner must live in either the main house or the accessory unit, so that both units cannot be rented to other people at the same time.
California now bars cities from imposing one on an ADU. A junior ADU is different: since 1 January 2026 owner-occupancy applies only when the JADU shares sanitation facilities with the house.
Quick facts
- ADU (California)
- Owner-occupant requirement may not be imposed 1
- Junior ADU (California)
- Required only if the JADU shares sanitation facilities with the house 2
- JADU rule changed by
- AB 1154, Stats. 2025, ch. 507, effective 1 January 2026 2
- Rental term a city may require
- 30 days or longer 1
- Earlier sunset removed by
- AB 976 (Ting), Stats. 2023, ch. 751 5
- Other states
- Varies; many cities outside California still require it
Key takeaways
- An owner-occupancy rule says the owner must live on the property, in the house or the ADU.
- California bars cities from putting this rule on an ADU (Section 66315).
- A junior ADU is different. Since 1 January 2026 the rule applies only if the JADU shares a bathroom setup with the house.
- A city may still require rentals of 30 days or longer.
- Lenders, insurers and old covenants on title are separate questions.
- Outside California, many cities still use owner-occupancy rules.
What it means, in plain English
An owner-occupancy rule ties the right to have an ADU to where the owner lives. The owner must live in one of the two homes on the lot. That means you cannot rent both the house and the ADU to tenants at once.
The legal phrase is "owner-occupant requirement". An owner-occupant is simply an owner who lives in the home. A deed restriction is a written promise recorded with the county that stays with the property when it sells.
For a junior ADU, the key words are "sanitation facilities". In plain terms, that means the toilet and bathroom. If the junior ADU has its own bathroom, the owner-occupancy rule does not apply to it 2.
Why it matters to you
This rule decides who can own and rent the property. With it, a landlord who moves away could lose the right to rent both units. Without it, you can rent the house and the ADU to separate tenants.
It also affects your plans for the future. If you might move, retire elsewhere or leave the home to family, the rule matters. A buyer also cares, because the rule can travel with the property on a recorded covenant.
Why cities used owner-occupancy rules
Owner-occupancy was the classic compromise when cities first allowed second units. The idea was that an owner living on site would keep the property in check, and that ADUs would house relatives rather than become investor rentals.
The cost was that an investor, a landlord who moves away, or an heir who inherits the house could not keep renting both units.
That trade-off is why the rule matters well beyond zoning. It affects who will lend against the property, what a buyer can do with it, and whether the ADU still counts as legal if the owner moves. The owner-occupancy research study traces its history in detail.
ADU and junior ADU: two different California rules
| ADU | Junior ADU | |
|---|---|---|
| Can a city require owner-occupancy? | No. Section 66315 bars "an owner-occupant requirement". | Only if the JADU shares sanitation facilities with the existing structure (66333(b)). |
| Exceptions | None in the section. | Not required if the owner is another governmental agency, land trust or housing organization. |
| Where the owner may live | Not applicable. | In the remaining part of the house or in the JADU. |
| Deed restriction | Not required by this rule. | Required: no separate sale, plus size and attribute limits, running with the land (66333(c)). |
| Minimum rental term | A city may require 30 days or longer (66315). | Rental must be for a term longer than 30 days (66333). |
- If You have an ADU (attached, detached or converted)
- Then No. § 66315 bars an owner-occupant requirement 1
- If You have a junior ADU with its own bathroom
- Then No, since 1 January 2026 2
- If You have a junior ADU that shares the house’s sanitation facilities
- Then Yes: you must live in the house or the JADU, unless the owner is a public agency, land trust or housing organization 2
- If You plan nightly rentals
- Then A separate rule: a city may require rentals of 30 days or longer 1
California only, current sections read 7 October 2026. Source: [1] [2]
How the rule changed
| When | Change | Law |
|---|---|---|
| 1 Jan 2020 to 1 Jan 2025 | ADUs permitted in this window were protected from local owner-occupancy rules; the law then allowed cities to impose them again from 1 January 2025 on newer units. | Former Gov. Code 65852.2, as described in the AB 976 digest |
| 11 October 2023 | AB 976 (Ting) approved: a local agency may not impose an owner-occupancy requirement on any ADU, and may require rental terms of 30 days or longer. | Stats. 2023, ch. 751 |
| 25 March 2024 | The rule moved, unchanged in substance, to Section 66315. | SB 477, Stats. 2024, ch. 7 |
| 1 January 2026 | JADU owner-occupancy narrowed to JADUs with shared sanitation. | AB 1154, Stats. 2025, ch. 507 |
The 2025 sunset that did not happen
Older guides say cities could bring back owner-occupancy rules on 1 January 2025. AB 976 (Stats. 2023, ch. 751) removed that sunset, and § 66315 now bars the rule for any ADU with no end date 5.
Where you will see it: the deed restriction
A junior ADU comes with a recorded deed restriction under Section 66333(c). That document, filed with the permitting agency, is where an owner-occupancy obligation shows up on title, alongside the ban on selling the JADU separately 2. A buyer's title report, a lender's review and an appraiser all read it.
Older ADU covenants recorded before the state bar took effect may still sit on title with owner-occupancy language. Whether a city can still enforce one is a legal question for the city attorney or your own counsel. The junior ADU page covers the unit type in full.
Checks before you rely on renting both units
- Confirm whether the unit is permitted as an ADU or a JADU. The rules differ.
- For a JADU, check whether it has its own bathroom or shares sanitation with the house.
- Read the recorded deed restriction or covenant on title, if any.
- Ask the lender how it treats the second unit; lender rules are separate from zoning.
- Check any local short-term rental rule; a city may require rentals of 30 days or longer.
Misconceptions
- Myth "California's owner-occupancy ban expired in 2025."
- Reality AB 976 (2023) replaced the planned 1 January 2025 reversal with a permanent bar on any ADU. Section 66315 carries the bar with no end date 1.
- Myth "JADUs always need the owner on site."
- Reality Since 1 January 2026, only when the JADU shares sanitation facilities with the house 2.
- Myth "No owner-occupancy means short-term rentals are allowed."
- Reality A city may still require rentals of 30 days or longer 1.
Example: three California owners
Hypothetical owners, used to show how the two rules apply.
| Owner | Facts | Owner-occupancy rule? |
|---|---|---|
| Ana | Lives in the house and rents a detached ADU. Later moves out and rents both. | No. Section 66315 bars it for an ADU. |
| Ben | Has a junior ADU inside the house with its own bathroom. | No. The JADU has its own sanitation facilities. |
| Cara | Has a junior ADU that shares the house bathroom. | Yes. The owner must live in the house or the JADU. |
Any of them may still face a city rule that rentals last 30 days or longer.
Where you will see it
- A recorded deed restriction. Required for a junior ADU. It shows up on a title report.
- An older covenant. Some ADUs approved years ago carry owner-occupancy language on title.
- The city ADU ordinance. Older text may still contain the rule, even if it can no longer apply to an ADU. An ordinance that breaks state law is null and void 4.
- A lease. The minimum rental term may appear in the lease you write.
- A loan file. A lender may ask who lives where. That is a lending rule, not zoning.
What the California bar gives you and what it does not
What it allows
- You can rent both the house and the ADU
- You can move away and keep both units rented
- An investor can add an ADU to a rental, as a zoning matter
What still applies
- A city may require rentals of 30 days or longer
- A junior ADU that shares a bathroom still needs the owner on site
- Lender and insurer rules are separate
- Old covenants on title need legal review
Owner-occupancy compared with related rules
| Rule | What it controls | California status for an ADU |
|---|---|---|
| Owner-occupancy | Where the owner must live | Barred (66315) |
| Minimum rental term | How short a rental can be | A city may require 30 days or longer (66315) |
| Deed restriction | Promises recorded on title | Required for a junior ADU (66333(c)) |
| Objective local standards | Size, height, setbacks, design | Allowed within the state ceilings (66314) |
| No separate sale | Selling the ADU apart from the house | Not allowed except under Article 4 (66314(d)(1)) |
What to ask before you buy or build
- Is the second unit permitted as an ADU or a junior ADU?
- Does a junior ADU have its own bathroom?
- Is there a recorded deed restriction or covenant, and what does it say?
- Does the city require a minimum rental term?
- Does my lender treat the ADU as a rental unit?
- Does my insurer need to know the ADU is rented?
Checklist for owners who plan to rent
- Pull the permit record to confirm the unit type.
- Order a title report and read any recorded restriction.
- Read the city rule on rental terms.
- Ask a lawyer about any old owner-occupancy covenant.
- Tell your lender and insurer about the rental.
- Write leases that meet the minimum rental term.
Outside California
Owner-occupancy is still common in city ordinances in states without a statewide ADU law, and some state statutes address it while others do not. The rule is local or state-specific; do not assume California's bar applies.
Questions about adu owner-occupancy requirement
Do I have to live on the property to rent out my ADU in California?
No. Section 66315 of the Government Code bars a city or county from imposing an owner-occupant requirement on an ADU. A city may still require rentals to be 30 days or longer.
Does a junior ADU require owner-occupancy?
Only if it shares sanitation facilities with the house. Since 1 January 2026, Section 66333(b) says owner-occupancy is not required when the JADU has its own sanitation facilities, or when the owner is a government agency, land trust or housing organization.
Did California's owner-occupancy ban end in 2025?
No. Before AB 976, cities could have imposed it again from 1 January 2025. AB 976 (Stats. 2023, ch. 751) instead prohibited it for any ADU. The bar now sits in Section 66315 with no sunset.
Can an investor build an ADU on a rental property in California?
State law does not require owner-occupancy for an ADU, so yes as a zoning matter. Lending, insurance and any recorded covenants are separate questions.
What does owner-occupied mean for an ADU?
It means the owner lives on the property, in the main house or the ADU. An owner-occupancy rule would stop you renting both units to tenants. California bars that rule for ADUs.
Can I rent both my house and my ADU in California?
Yes, as a zoning matter. Section 66315 bars cities from requiring the owner to live on site for an ADU. A city may still require rentals of 30 days or longer.
What if my city ordinance still says the owner must live on site?
For an ADU, that rule conflicts with Section 66315. A local ordinance that does not meet state law is null and void under Section 66316. Ask the planner which rule the city applies.
Does the owner-occupancy rule apply when I sell the house?
For an ADU in California, no state rule ties the ADU to an owner living there. For a junior ADU, the recorded deed restriction runs with the land, so a buyer takes it on.
Can I list my ADU on a short-term rental site?
It depends on the city. Section 66315 lets a city require rentals of 30 days or longer. Many short-term stays are shorter than that, so check the local rule first.
Is a junior ADU with its own bathroom free of owner-occupancy?
Yes. Since 1 January 2026, Section 66333(b) applies owner-occupancy to a junior ADU only when it shares sanitation facilities with the house.
Sources
- California Legislative Information, Gov. Code § 66315, retrieved .
- California Legislative Information, Gov. Code § 66333, retrieved .
- California Legislative Information, Gov. Code § 66314, retrieved .
- California Legislative Information, Gov. Code § 66316, retrieved .
- California Legislative Information, AB 976 (2023–2024), Chapter 751, retrieved .
Expert review
Written by the HyreADU Research team. Not yet reviewed by an outside expert. We say so rather than imply a review that has not happened; see our editorial policy.
How the numbers were checked: Sections 66315 and 66333 were read on leginfo on 7 October 2026, with the enactment lines printed under them; AB 976 was read on its leginfo bill page. Held for licensed review (G-REV).
Suggest a correction. We fix errors and say what changed.