Do you need new insurance to rent out your California house?

Usually not, once you move out. The model HO-3 homeowners form from Insurance Services Office (ISO), which insurers can adapt, covers the dwelling on what it calls the residence premises. It defines that as "the one-family dwelling where you reside."

Once a tenant lives there and you do not, the house no longer fits those words. Your own policy may word it differently, so check its definitions.

Under California law, how a home is used can change its price. An insurer may cancel a policy if an extra charge for "a change in its occupancy or use" goes unpaid (Insurance Code Section 676).

California writes a standard fire policy into its Insurance Code, and every policy here must match or beat it on fire. It says an insurer is not liable for a loss "while the hazard is increased" by anything in your control or knowledge. A policy can change that rule in writing, and the model HO-3 form has no such clause.

Whether a tenant counts as a bigger hazard is a question to put to your insurer, in writing, before the lease starts.

A landlord policy insures a house you own and rent to others. Insurers call it a dwelling fire policy. It covers the building, and it can pay the rent you lose while covered damage is repaired.

The standard forms start with DP-1, a basic form that covers only the types of damage it names. DP-3, the special form, covers the building against any cause of damage it does not exclude. Both leave out flood and earthquake.

Liability is the part to ask about. The standard dwelling forms have no liability section, so ask how your policy covers a tenant or visitor who is hurt on the property. Get the answer in writing.

Standard insurers sell landlord policies. If none will take the house, specialty insurers and then the FAIR Plan are the next places to look.

A rented house needs two policies. Your landlord policy covers the building. Your tenant's renters policy covers their belongings and their own liability.

"Your landlord does not provide insurance for your personal property," the Department of Insurance tells renters in its residential guide, revised January 2026. The guide adds that a renters policy covers loss of use, meaning help with the cost of living elsewhere after a covered loss.

So tell your tenant, in writing, that your policy does not cover their things.

Before the lease starts, and in writing. The model homeowners form says a change to the policy "must be in writing by us to be valid," so get the insurer's answer by letter or email.

A claim would bring the change to light anyway. The form's proof of loss, a sworn statement you sign for a claim, asks for "changes in title or occupancy" during the policy.

If the house will sit empty between your move and the tenant's, plan for that too. The Department's guide lists losses to a house "vacant for 60 days or more" among those a homeowners policy generally does not cover. Read how long a house can sit empty before you move.

The steps, in order:

• Tell your insurer or agent the house will be rented, and from what date.
• Ask whether it sells landlord policies and can switch yours, or whether you need a new insurer.
• Start the landlord policy on or before the day you move out.
• Cancel the homeowners policy only after the landlord policy starts, and ask how the refund is figured.
• If there is a mortgage, send the lender the new policy and check that it names the lender correctly.
• Insure your own belongings where you live now, with a homeowners or renters policy at that address.

Then a homeowners policy can still fit, because you still live there. The model form's "residence premises" includes a two- to four-unit building "where you reside in at least one of the family units."

It even pays the rent you lose on the rented part if covered damage makes it unfit to live in. But it limits what it covers there.

It leaves out "property of roomers, boarders and other tenants," so your tenant still needs a renters policy. Its liability section does not exclude renting part of the home as a residence, unless a family unit lodges "more than two roomers or boarders."

A guest house, backyard cottage or detached ADU you rent out is another gap, so ask your insurer in writing how to cover one. The model form leaves out other buildings on the lot that are "rented or held for rental to any person not a tenant of the dwelling." Insuring an ADU you rent out covers what to settle before a tenant moves in.

Short stays are a different question, answered in whether homeowners insurance covers Airbnb guests. Either way, tell your insurer what you rent, and to whom.

Compare what each policy covers, not just the price. If an LLC or a trust holds the title, ask how it will be named on the policy, and read how to insure a home an LLC owns.

Questions for the insurer or agent:

• Is the building covered at replacement cost, the cost to rebuild new, or at actual cash value, its used value?
• Is lost rent covered, and up to what amount?
• How much liability coverage is there, or how do I add it?
• Are my appliances and any furniture I leave covered?
• What changes if the house sits empty between tenants?
• Does the policy allow short stays, or only long-term tenants?