Do You Have to List Household Members Who Do Not Drive
Yes, most insurers want every adult in your household listed, even ones who don't drive, but a non-driver usually costs you nothing.
A grandson moves in for his senior year of high school
A grandmother took in her teenage grandson for his last year of high school while his parents relocated for work. He had a learner's permit but no license yet, and no plans to drive her car regularly. When she called her agent to ask what she needed to do, the agent asked a few questions: was he licensed, would he ever drive the car, was he living there permanently or just for the school year. Because he had a permit and lived in the home, the agent said he needed to be listed, but as an excluded or rated non-driver rather than a full policyholder.
That distinction mattered. Listing him as present in the household satisfied the insurer's requirement to disclose who lived there, but excluding him from coverage meant his permit status didn't raise her premium the way adding a licensed teen driver would have. Later that school year he got his license and started borrowing her car occasionally. She called again, removed the exclusion, and added him as a driver, which did raise her rate. Her agent told her this is common: people move through permit, non-driving resident, and licensed driver stages, and the policy needs to be updated at each one, not guessed at in advance.
What happens if you don't list a grandchild who lives with you?
If that grandchild never drives and never gets licensed, in most cases nothing happens. The real risk shows up only if they're involved in an incident while driving your car, even once, and the insurer discovers they lived in your home the whole time without being disclosed. At that point the insurer can argue you withheld information that would have changed your rate or their decision to cover you at all.
That argument can lead to a denied claim, not just a higher bill. It doesn't matter that the grandchild wasn't driving regularly or wasn't licensed when they moved in. What matters is whether your insurer considers them a resident, and whether you told the truth about who lives in your home. Calling to ask costs you nothing and usually takes a few minutes.
Once you know who needs to be listed, compare quotes that already account for your full household.
Telling your insurer who lives with you, even the non-drivers
If you do
Your policy reflects your actual household. If anything ever happens involving your car, there's no question about who was living there or why they weren't mentioned. Your grandchild can be excluded from coverage now and added later with no gap, no surprise, and no argument about what you should have disclosed.
If you don't
Your policy stays based on outdated information. If your grandchild gets licensed, borrows the car once, or is home during a claim investigation, the insurer may treat the omission as misrepresentation. That can mean a denied claim or cancelled policy, even though the grandchild was never actually driving.
Insurers want to know who could plausibly drive your car
Auto insurance is priced on risk, and risk includes who has access to the vehicle, not just who's currently licensed to drive it. A household member, even one without a license, is someone who lives under the same roof and could get a permit, borrow keys, or end up behind the wheel in an emergency. Insurers ask about residents for that reason, not because they assume every resident will drive.
This is why most insurers distinguish between disclosure and rating. Disclosing someone means telling the insurer they live in your home. Rating someone means factoring them into your premium as a driver. A non-driving grandchild can be disclosed without being rated, often through a formal exclusion that states they won't operate the vehicle. This keeps your rate unaffected while keeping your policy accurate.
What counts as a household member varies by insurer and sometimes by state. Some count anyone living with you for a set stretch of time, others look at whether the person has access to keys or a reasonable expectation of driving eventually. A grandchild visiting for a few weeks in summer is usually treated differently than one who moved in for the school year or permanently. Check with your insurer about where they draw that line, since it changes what you're required to report.
The exception that trips people up is the learner's permit. Many insurers treat a permit as the start of driving eligibility, even though a permit holder can't drive unsupervised. If your grandchild gets a permit while living with you, that's usually the moment to call your insurer, not when they get a full license. Waiting until licensing can leave a gap where the insurer would say they should have already been on the policy.
Does a grandchild visiting for the summer count as a household member?
Usually not, if the stay is temporary and they're not driving your car regularly. Insurers generally care about people with an ongoing presence in the home, not short visits. But definitions of 'temporary' vary, and some insurers use a specific stretch of time as their cutoff. If your grandchild visits every summer for months at a time, or drives your car while there, call your insurer and describe the arrangement exactly so they can tell you whether it counts.
Can my grandchild be insured through my policy instead of their parents'?
Yes, if they live with you, you can typically add them to your policy rather than their parents' policy. This is common when a grandchild has moved in permanently or for an extended period. Which policy makes more sense depends on where they're considered a resident, whose car they primarily drive, and how each insurer prices a young driver. Ask both your insurer and their parents' insurer for a quote on adding them, then compare.
Will excluding my grandchild from my policy protect me if they drive anyway?
No, an exclusion means there's no coverage for them specifically, so if they drive your car and cause damage, your policy likely won't pay for it. Exclusions are meant for people who truly won't drive the vehicle, not as a way to avoid rating a driver who sometimes does. If there's any chance your grandchild will drive your car, even occasionally, they need to be added as a rated driver instead of excluded.
