What Are the 2026 LA Short-Term Rental Rules for ADU Owners?
Justin Borges, DRE #01940318 · 12 min read
Under the LA Home Sharing Ordinance, only your primary residence can be listed as a short-term rental. If you live in the main house on your lot, your separate ADU is not your primary residence and cannot legally be listed on Airbnb or VRBO. Registration costs $89 per year, a 120-day annual cap applies to whole-unit rentals, and violations carry fines up to $2,500 per day.
Los Angeles has added roughly 70,000 ADUs since the state relaxed permit rules in 2017, and the city is on track to permit tens of thousands more. For many homeowners in neighborhoods like Eagle Rock, Highland Park, and Glassell Park, the ADU was pitched as a path to passive income, and short-term rental platforms made that pitch louder. A small backyard unit that rents for $2,500 a month to a long-term tenant might fetch $200 a night on Airbnb.
The problem is that the City of Los Angeles wrote a specific set of rules to govern exactly this scenario, and those rules work against the typical ADU setup. The LA Home Sharing Ordinance, in effect since November 2019, ties short-term rental eligibility to one requirement above all others: the unit you list must be your primary residence. For the vast majority of ADU owners, that condition kills the Airbnb option before anything else matters.
This guide explains every relevant rule as it stands in 2026, covers the registration process for those who do qualify, and lays out an honest comparison of the short-term rental path versus a standard long-term tenant. If you are in the middle of deciding what to do with your ADU, these are the facts you need first.
- What is the LA Home Sharing Ordinance?
- Does the primary-residence rule apply to my ADU?
- What is the 120-day cap and how does it work?
- How do you register as an STR host in LA?
- What are the penalties for violating the ordinance?
- Should you Airbnb your ADU or rent it long-term?
- Frequently Asked Questions
What is the LA Home Sharing Ordinance?
The City of Los Angeles adopted the Home Sharing Ordinance in 2018, and it took effect in November 2019. The ordinance was designed to protect the city's long-term housing supply while still allowing homeowners to earn income from their primary residence. The three pillars of the ordinance are: registration, primary residence, and an annual cap on unhosted rentals.
Any unit rented for fewer than 30 consecutive days qualifies as a short-term rental under the ordinance. This includes rentals through Airbnb, VRBO, Hipcamp, and any other platform. Renting your unit for 29 nights without registration or while violating the primary-residence rule triggers the same penalties as a traditional Airbnb listing. The 30-day threshold matters because it distinguishes STRs from standard month-to-month tenancies, which are governed by separate California tenant-protection laws.
The City enforces the ordinance through the LA Department of Building and Safety (LADBS), which maintains the registration database, and the LA Housing Department (LAHD), which investigates complaints. Since late 2025, the City has also deployed automated monitoring software that scans platform listings and cross-references them against the registration database. Listings without a valid registration number, or listings for units that do not match the host's registered primary address, are flagged for removal.
All registration applications and renewals go through the LADBS PermitLA portal (lacity.gov/dbs). The City issues a Home-Sharing Registration Number (HRRN) upon approval. Platforms including Airbnb are contractually required to verify HRRNs and remove listings that fail verification.
Does the primary-residence rule apply to my ADU?
Yes, and for most ADU owners, it is the rule that ends the Airbnb conversation. The ordinance defines primary residence as the property where you live for at least six months per year and that is listed as your home address on your California driver's license, voter registration, or utility bills. You can only register one unit at a time, and you can only register a unit you actually occupy as your primary home.
If you built an ADU behind or above your primary home, the legal situation is straightforward: the main house is your primary residence. The ADU is a separate dwelling unit. It does not matter how recently you built it, how nicely you furnished it, or how many guests you think would book it. You cannot register a unit as your primary STR if you live in a different unit on the same lot.
"The question I get from nearly every ADU owner is some version of: can I just put a different address on the application? The answer is no. The City cross-checks your registration address against LADBS permit records, utility accounts, and in contested cases, DMV records."
Justin Borges, DRE #01940318There is one exception that does apply to some ADU owners. If you actually live in the ADU as your primary home, you can register the ADU for home sharing. This situation is more common than it sounds: some owners built the ADU first, moved into it during main-house construction, and never moved back. Others rent out the main house to a long-term tenant and make the ADU their permanent home. In those cases, the ADU is genuinely the primary residence, and registration is allowed.
According to the LA Department of Building and Safety, ADUs with a certificate of occupancy issued on or after January 1, 2017 may only be used for home sharing if the ADU itself is the host's primary residence. If your ADU was built more recently, this rule applies without exception. Contact LADBS directly to confirm your specific unit's eligibility before applying.
For the large majority of homeowners who built an ADU behind their primary home and live in the main house, the practical outcome is the same: the ADU cannot be listed on Airbnb or VRBO under the Home Sharing Ordinance. The income opportunity that the platform promised is legally unavailable in that configuration.
For more context on ADU regulations in LA, including rent control exposure and permit considerations, see the complete ADU guide for Los Angeles owners and the ADU rent control breakdown.
Not Sure What to Do With Your ADU Under the New Rules?
Every ADU situation is different. Text us and we will help you figure out whether converting to long-term rental, keeping it, or selling makes the most financial sense for your property.
Text Us About Your ADUWhat is the 120-day cap and how does it work?
The 120-day cap applies specifically to "unhosted" rentals: situations where you rent out the entire unit while you are not present. If you leave town for a week and rent your whole home through Airbnb, that counts against the cap. Once you hit 120 nights in a calendar year, you cannot legally rent the unit again until January 1 of the next year.
There is no cap on "hosted" rentals. If you rent out a spare bedroom in your home while you are there, you can do so every night of the year. The ordinance draws a sharp line between a homeowner sharing their home (unlimited) and a homeowner running an investment property as a short-term hotel (capped at 120 nights).
Airbnb and VRBO are contractually required to track nights rented per registered listing and notify hosts when they approach the limit. The platforms stop accepting new bookings for the listing once it reaches 120 nights in the calendar year. The City can also audit individual accounts directly using data provided under SB 346, which California enacted to facilitate city-level enforcement of STR regulations.
Even for ADU owners who qualify to list (those living in the ADU as their primary residence), the 120-day cap changes the income math considerably. At a nightly rate of $150 to $250, 120 nights of unhosted rental generates roughly $18,000 to $30,000 per year in gross revenue before platform fees, taxes, and expenses. A long-term tenant in the same unit in a neighborhood like Eagle Rock or Highland Park may generate $2,000 to $3,000 per month, or $24,000 to $36,000 per year, with no cap, no platform fees, and no Transient Occupancy Tax.
How do you register as an STR host in Los Angeles?
If you have confirmed that your unit qualifies (it is your primary residence and, if it is an ADU, it meets the relevant occupancy requirements), the registration process runs through the City of Los Angeles LADBS PermitLA portal. Plan for two to six weeks from application to receiving your Home-Sharing Registration Number. You cannot list legally until the number is issued.
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1
Confirm primary residence status
Verify that the unit is your primary address on your California driver's license, voter registration, and at least one utility bill. The City cross-checks all three during review.
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2
Check your ADU's certificate of occupancy date
Pull the permit record for your ADU at the LADBS Property Information portal. Note the final inspection date or certificate of occupancy date. ADUs approved on or after January 1, 2017 require that the ADU itself be your primary residence.
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3
Create an account on LADBS PermitLA
Go to lacity.gov/dbs and create a PermitLA account. This is the City's centralized permit and licensing platform for all home-sharing applications.
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4
Submit the Home-Sharing registration application
Complete the online application form. Attach proof of primary residence (utility bill dated within the last two months, voter registration card, or California driver's license). Include the property's Assessor's Parcel Number (APN), which is on your property tax bill.
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5
Pay the $89 annual fee
Submit the annual registration fee online through PermitLA. Keep the payment confirmation. The fee renews every calendar year and must be kept current or the registration lapses.
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6
Receive your Home-Sharing Registration Number
LADBS issues your HRRN by email once the application clears review. Processing times vary, but plan for two to six weeks. Do not list on any platform until you have this number in hand.
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7
Add your HRRN to all listing platforms and pay TOT
Enter your HRRN in the listing settings on Airbnb and any other platform. Airbnb collects and remits the 14% Transient Occupancy Tax (TOT) on your behalf for most bookings. If you use a platform that does not auto-collect TOT, you must remit it directly to the City of Los Angeles Office of Finance.
What are the penalties for violating the ordinance?
The City of Los Angeles significantly increased STR enforcement starting in 2025, deploying automated monitoring software that scans Airbnb and VRBO listings in real time. The software flags listings without valid registration numbers, listings at addresses that do not match the registration database, and listings that appear to exceed the 120-day cap based on published availability data. Complaints from neighbors also generate investigation files.
Fines are assessed per day of violation, not per booking or per guest. A listing that runs for 60 days in violation of the primary-residence rule could generate $150,000 in fines at the maximum daily rate. The City also has the authority to refer repeat violators to the City Attorney's office for criminal prosecution, and the LA Housing Department can pursue civil action under the Ellis Act or RSO for landlords who convert tenant-occupied units to STRs without following proper procedures.
Airbnb and VRBO removing a non-compliant listing is the first consequence, not the last. The City tracks removal notices and uses them to initiate enforcement investigations. A listing that gets removed for lacking a registration number can still result in fine proceedings for the days the listing was active before removal.
For further context on how LA's rental enforcement landscape works for property owners, the LA rent control guide for SFRs, duplexes, and ADUs covers the intersection of RSO, AB 1482, and tenant-protection obligations that also apply to short-term rental conversions.
What Is My Home Worth With an ADU in 2026?
An ADU adds meaningful value to any LA property. If the STR rule changes have you considering a sale, get an accurate comps-backed valuation that accounts for your ADU.
Get My Free Home ValuationShould you Airbnb your ADU or rent it long-term?
For most ADU owners in Los Angeles, the legal reality described above removes the Airbnb option entirely. But for owners who do qualify (those who live in the ADU full-time and rent the main house, or those who built before the relevant COO cutoff and can document primary residence), the income comparison is worth running before committing to either path.
"In 13 years of doing this, I have seen ADU owners choose short-term rentals based on the per-night rate and ignore the 120-day ceiling. The long-term math almost always favors the tenant, and that is before you count the compliance burden."
Justin Borges, DRE #01940318Short-term rental income in LA is genuinely variable. A well-located, well-furnished ADU in a desirable NELA neighborhood like Atwater Village or Silver Lake can command $175 to $300 per night, and some properties do significantly better during peak travel periods. At 120 nights of unhosted rental and a $200 average nightly rate, gross revenue reaches $24,000 before Airbnb's service fees (typically 3% for the host), the 14% Transient Occupancy Tax, and any professional cleaning or maintenance expenses. Net revenue after those deductions often falls to $17,000 to $20,000.
The long-term tenant does not require Transient Occupancy Tax remittance, does not require platform fee management, and is not subject to the 120-day cap. Maintenance turnover costs between guests add up faster than most STR operators anticipate. Vacancy risk exists on both paths, but a reliable long-term tenant in a tight LA rental market is often easier to find than consistent STR bookings through shoulder-season months.
There is a third option that some ADU owners use: list on Airbnb for the first 120 nights of the year at peak demand rates, then switch to a furnished medium-term rental (30 or more days) for the rest of the year. Rentals of 30 or more days are not subject to the Home Sharing Ordinance, have no cap, and do not require home-sharing registration. They also do not generate TOT liability. For a furnished ADU in a high-demand neighborhood, this hybrid model can capture STR premiums during high-season months without running afoul of the 120-day rule.
For a deeper look at how ADU returns work across different neighborhoods, see the ADU ROI guide for Los Angeles and the Airbnb vs. long-term rental comparison for LA owners.
Quick Reference: Can I Airbnb My ADU?
| Your situation | STR eligible? | Best path |
|---|---|---|
| Live in main house, ADU is separate | No | Long-term tenant in ADU |
| Live in the ADU full-time | Possibly | Register with LADBS, confirm COO date |
| Live in ADU, rent main house LTR | Possibly | Register ADU for home sharing; main house stays LTR |
| Want max income, no compliance burden | N/A | Long-term tenant |
| Want STR upside without year-round commitment | Partial | STR for up to 120 nights, then 30+ day furnished rentals |
| ADU not yet built, deciding on setup | Plan for it | Move into ADU as primary home; rent main house LTR |
Frequently Asked Questions
Can I Airbnb an ADU in Los Angeles?
Generally, no. The LA Home Sharing Ordinance requires that the listed unit be your primary residence. If you live in the main house and own a separate ADU on the same lot, the ADU is not your primary residence and cannot be registered for home sharing. The one exception applies if you actually live in the ADU as your full-time primary home.
What is the LA Home Sharing Ordinance?
The LA Home Sharing Ordinance, effective November 2019, is the City of Los Angeles's regulatory framework for short-term rentals. It requires all STR hosts to register with the City through LADBS, restricts listings to the host's primary residence, and caps whole-unit unhosted rentals at 120 nights per calendar year. Platforms like Airbnb and VRBO are required to enforce these rules and remove non-compliant listings.
What is the 120-day cap for short-term rentals in LA?
The 120-day cap limits whole-unit STR rentals to 120 nights per year when the host is not present at the property. There is no cap on hosted rentals, meaning you can rent a spare room in your primary residence year-round while living there. Platforms track and enforce the cap automatically; the listing stops accepting bookings once the threshold is reached.
How much does it cost to register as an STR host in Los Angeles?
The City of Los Angeles charges approximately $89 per year for a Home-Sharing registration through LADBS. The fee renews annually. You must provide proof that the property is your primary residence, and you cannot legally list your unit until you receive your Home-Sharing Registration Number from the City.
What are the fines for violating LA short-term rental rules?
Fines vary by violation type. Operating without a valid registration can trigger fines up to $500 per day. Exceeding the 120-day cap can trigger fines up to $1,000 per day. Listing an ADU that does not qualify as the host's primary residence carries the highest fines, up to $2,500 per day. Fines are cumulative and assessed per day of violation, not per booking.
Is it better to rent my ADU on Airbnb or to a long-term tenant?
For most ADU owners, a long-term tenant is simpler and often produces comparable or better annual income. Most ADUs cannot qualify for STR registration because the owner lives in the main house. Even for those who do qualify, the 120-day cap, platform fees, 14% Transient Occupancy Tax, and turnover maintenance costs often make long-term rental income more predictable and competitive in total annual dollars.
Do I need to collect hotel tax on Airbnb income in Los Angeles?
Yes. The City of Los Angeles levies a 14% Transient Occupancy Tax (TOT) on all short-term rental revenue. For most hosts, Airbnb collects and remits TOT automatically on each booking. If you use a platform that does not auto-collect, you are responsible for remitting TOT directly to the City of Los Angeles Office of Finance on a monthly or quarterly basis.
Have an ADU in LA? Here Is What to Do Next.
The 2026 STR rules change the math for a lot of ADU owners. Whether you want to pivot to long-term rental or consider a sale, we can help you run the numbers.
- Free home valuation that accounts for your ADU's income potential
- Honest assessment of LTR vs sale in your specific neighborhood
- Text us any time — no commitment, just real answers
