Last updated: November 2026 | Next review: February 2027 (quarterly)
Quick answer: If you rent your ADU (accessory dwelling unit) or any home to a tenant who isn’t family, your regular homeowners policy usually won’t cover that rental. You’ll typically need a landlord policy, often called a DP-3 or dwelling fire policy, that covers the building, your liability as the owner, and the rent you lose if a covered loss makes the unit unlivable (Insurance Information Institute; Experian).
If you just built a backyard cottage in Sacramento, you’re in good company. The city of Sacramento issued ADU permits to 1,134 property owners from 2020 through 2024, compared with 143 in the five years before that (Abridged, Sept. 2025). Statewide, California issued 30,231 ADU permits in 2024, about 26% of all new housing construction, according to Department of Housing and Community Development figures (California Insider).
Here’s the part a lot of new ADU owners miss: the building permit doesn’t change your insurance. You do. This guide walks you through which policy fits how you use the unit, what it costs, and the gaps that catch Sacramento landlords off guard.
⚠️ Scope note: This guide covers long-term rentals, family-occupied ADUs, and short-term rentals of one- to four-unit homes and ADUs in the Sacramento area. It doesn’t cover apartment buildings with five or more units, commercial property, or legal questions about leases or evictions. Coverage varies by insurer and policy, so confirm the details with a licensed insurance agent before you rent.
What is landlord insurance?
Landlord insurance is a policy for a home you own but rent to someone else. It protects the building, your liability as the property owner, and your rental income after a covered loss. It’s not the same as homeowners insurance, which is built for a home you live in yourself (Insurance Information Institute).
Most landlord policies are written on one of three dwelling forms. The difference comes down to which causes of damage are covered and how a claim is valued (dwelling policy study guide).
| Form | Coverage style | How claims are valued | Who it fits |
| DP-1 (Basic) | Named perils only (a short list, such as fire and lightning) | Actual cash value (depreciation is subtracted) | Older or lower-value rentals where cost matters most |
| DP-2 (Broad) | Expanded list of named perils | Replacement cost | Owners who want more than basic but don’t need open-peril |
| DP-3 (Special) | Open-peril on the dwelling: covers everything except listed exclusions | Replacement cost | Most single-family rentals and rented ADUs |
One thing none of these forms do: cover your tenant’s stuff. A DP-3 doesn’t protect a renter’s belongings, so it’s smart to ask tenants to carry their own renters insurance (an HO-4 policy) (Steadily).
Does homeowners insurance cover an ADU?
Homeowners insurance usually covers an ADU when you or a family member live in it, but not when you rent it to a tenant. How the unit is used matters more than whether it’s attached or detached (Experian; SmartFinancial).
ADU coverage on a homeowners policy
- Claim: A detached ADU on a homeowners policy usually falls under “other structures” coverage (Coverage B), which is often capped at 10% of your dwelling limit.
- Context: On a home insured for $350,000, that’s $35,000 for every detached structure on the lot combined. A freestanding ADU can cost $150,000 or more to build.
- Evidence/source: Experian; Safeco.
- Takeaway: If your ADU is detached, check your Coverage B limit today. You may need an endorsement to raise it, or a separate policy.
Sacramento numbers make this gap easy to see. The city allows detached ADUs up to 1,200 square feet, and a 600-square-foot detached unit runs roughly $120,000 to $240,000 before design and permit fees (Steadily). A 10% other-structures limit rarely stretches that far.
| How you use the ADU | Policy that usually fits | Watch for |
| Empty, office, or storage | Homeowners policy (Coverage B or an endorsement) | Coverage B limit too low for rebuild cost |
| Family member lives there, no rent | Homeowners policy, often with raised limits | Tell your insurer the unit is occupied |
| Long-term tenant (6+ months) | Landlord / DP-3 policy for the rental | Loss of rent and liability limits |
| Short-term guests (Airbnb, Vrbo) | Short-term rental endorsement or specialized policy | Business-activity exclusions |
When do you need landlord insurance for an ADU?
You typically need landlord insurance once you lease a home or ADU to a non-family tenant for an extended stay, such as six months or a year (Insurance Information Institute; Experian). That applies whether the unit is attached, detached, or a garage conversion.
Homeowners vs. landlord policy for a rented ADU
- Claim: Renting your ADU to a paying tenant usually takes it outside what a homeowners policy will cover.
- Context: Tenants change the risk. There’s more liability exposure, and the policy needs to replace your rental income, not just repair the building.
- Evidence/source: SmartFinancial notes any rented space, attached or not, needs a landlord policy; the Insurance Information Institute says long-term leases call for a landlord or rental dwelling policy.
- Takeaway: Before your first tenant signs a lease, call your insurer and get the rental written on the right policy.
Some owners keep a homeowners policy on the main house and add a separate landlord policy for the ADU. Others insure the whole property on one policy. Which setup works depends on your insurer, so ask before you assume.
And here’s a California detail worth knowing: state law doesn’t require landlord insurance, but your mortgage lender may (Hippo, citing the California Department of Insurance).
Homeowners vs. landlord insurance: key differences
The biggest difference is that a landlord policy can replace lost rent and doesn’t cover the occupant’s belongings. A homeowners policy covers your belongings and your own extra living costs instead.
| Coverage | Homeowners (HO-3) | Landlord (DP-3) |
| Who lives there | You (owner-occupied) | A tenant |
| Building | Yes | Yes |
| Detached structures (incl. ADU) | Other structures, often 10% of dwelling | Yes, limits vary |
| Contents | Your belongings | Only landlord-owned items (like appliances), not the tenant’s |
| Liability | Included | Usually included or added |
| Lost rent | No | Yes (fair rental value / loss of rent) |
| Typical cost | Baseline | About 25% more for the same property |
Cost comparison from the Insurance Information Institute, as reported by Experian.
What does loss of rent coverage pay?
Loss of rent coverage, also called fair rental value, pays the rent you lose when a covered loss, like a fire or burst pipe, makes the unit unlivable while it’s repaired. It doesn’t pay when a tenant simply stops paying (Steadily).
This is the piece that makes a landlord policy worth it. If a kitchen fire shuts down your ADU for six months, the repair bill is only half the hit. The other half is six months of rent you’re not collecting while the mortgage is still due.
A few details to check on your policy:
- Time limit: Many DP-1 and DP-3 policies pay up to 12 months; some offer up to 24 (Steadily).
- Dollar limit: One landlord insurer says this coverage is often set at 20% to 25% of the dwelling limit (Steadily). Do the math: monthly rent times realistic repair time.
- Vacancy: Loss of rent generally applies to an occupied rental, not a unit sitting empty between tenants.
- Non-payment: Tenant default needs a different product, sometimes called rent guarantee insurance.
How much does landlord insurance cost in California?
Landlord insurance in California averages roughly $1,728 a year by one estimate, and wildfire zones can push it much higher (Hippo). Nationally, landlord policies run about 25% more than a homeowners policy on the same property (Insurance Information Institute, via Experian).
Your price isn’t random. These factors usually drive it:
- Rebuild cost of the house and ADU (not market value).
- Location and wildfire risk, which matters a lot in foothill areas east of Sacramento.
- Policy form (DP-1 costs less than DP-3 but covers less).
- Loss of rent and liability limits you choose.
- Deductible, roof age, and the property’s claims history.
What about renting your ADU on Airbnb or Vrbo?
Short-term rentals are treated differently. Standard homeowners insurance typically doesn’t cover commercial activity, and renting a home short-term counts, according to a March 2026 Insurance Information Institute report (Triple-I via Business Wire).
That same report warns that not telling your insurer can lead to denied claims, less liability coverage, higher deductibles, or a canceled policy. Options include a home-sharing endorsement, a specialized short-term rental policy, or commercial coverage (Triple-I). Don’t rely only on the booking platform’s host protection. Read what it actually covers.
What if your Sacramento rental is on the California FAIR Plan?
The California FAIR Plan writes dwelling fire policies for tenant-occupied and rented homes, up to a $3 million limit (Assembly Insurance Committee). It’s the insurer of last resort for owners who can’t find coverage with the regular companies (California Department of Insurance).
But it’s bare-bones. A standard FAIR Plan dwelling policy covers fire, lightning, internal explosion, and smoke. Other structures and fair rental value are optional add-ons, and there’s no liability coverage at all (Latent Insure, citing FAIR Plan policy detail).
If you’re a FAIR Plan landlord, that means two things:
- Add fair rental value and other structures (for a detached ADU) to the FAIR Plan policy.
- Buy a difference in conditions (DIC) policy to pick up liability, water damage, theft, and other perils the FAIR Plan leaves out.
Does landlord insurance cover earthquakes?
Usually not. Most landlord policies exclude earthquake damage, so you’d need a separate earthquake policy from the California Earthquake Authority (if eligible) or a private insurer (Hippo). FAIR Plan dwelling customers can buy California Earthquake Authority coverage through the FAIR Plan (California FAIR Plan).
How to insure an ADU in Sacramento: step by step
Insuring an ADU comes down to five steps, and the first one should happen before construction is finished.
- Call your insurer before you finish building. Tell them the unit exists, its size, and how you’ll use it.
- Price the rebuild, not the market value. Use your contractor’s numbers so your limits match what it would cost to rebuild.
- Pick the policy that matches use. Homeowners for family or personal use; landlord/DP-3 for a long-term tenant; a short-term rental option for Airbnb-style stays.
- Add the extras that matter. Loss of rent, higher liability, and an umbrella policy if you want protection above your policy limits (Safeco).
- Ask your tenant for renters insurance. It protects their belongings, which your policy doesn’t.
Common mistakes Sacramento ADU landlords make
- Assuming the homeowners policy “just covers” the ADU after a tenant moves in.
- Leaving other-structures coverage at 10% when the ADU cost far more to build.
- Skipping loss of rent to save a few dollars.
- Listing the unit on Airbnb without telling the insurer.
- Forgetting that FAIR Plan policies have no liability coverage.
Frequently asked questions
Question: Do I need landlord insurance if my parents live in my ADU rent-free?
Answer: Usually not. Most homeowners policies cover an ADU lived in by family, though you may need higher limits (SmartFinancial). Tell your insurer someone lives there.
Question: Is landlord insurance required in California?
Answer: No state law requires it, but your mortgage lender may (Hippo).
Question: How long does loss of rent coverage last?
Answer: Many policies pay up to 12 months, and some up to 24, while covered repairs are made (Steadily).
Question: Will my landlord policy cover my tenant’s furniture?
Answer: No. A landlord policy covers your building and items you own. Your tenant needs renters insurance for their belongings (Steadily).
Question: Can I put one policy on my house and my rented ADU?
Answer: Sometimes. Some insurers write the whole property on one landlord policy, while others want a homeowners policy on the main house and a separate landlord policy on the ADU. Ask a licensed agent which setup your insurer allows.
About the author
Brandon Erickson | IVMG LLC
With 7 years of experience writing insurance content, I specialize in creating clear, informative, and engaging articles that help consumers better understand auto, home, and other types of insurance. My writing focuses on answering real customer questions, simplifying complex insurance topics, and creating useful content that performs well in search engines while providing genuine value to readers.
Last updated: November 2026 | Next review: Quarterly
Disclaimer: This content is for general informational purposes only and is not insurance, legal, or financial advice. Brandon Erickson is not a licensed insurance agent. Please speak with a licensed insurance agent about any questions regarding your coverage.