One Address, Two Policies

Moving in together creates a shared household before it creates a shared policy, and insurers care about households. Both carriers need the new address, both need to know who else lives there, and there is usually a decision worth making about whether to stay separate or combine.

Start with the disclosure, not the discount

Each of you now has a licensed adult living at your address who has access to your car. Tell your carrier. If you never drive each other's vehicles, your carrier will have a way to note that. If you do — and most couples do — the honest answer is that you are both household drivers and should be listed accordingly.

Should you combine into one policy?

Sometimes it helps and sometimes it does not. Combining tends to help when both records are similar and there are two cars, because multi-car and multi-driver structures exist for that shape. It tends to hurt when one person has a significantly worse record than the other, because that record now touches both cars. The only way to know is to price it both ways — separate and combined — with the same coverage on each so the comparison means something.

Worth knowing: carriers have their own rules about which unmarried adults can share a policy. Some require joint ownership of a vehicle, some require a shared address only. Ask before assuming.

What changes even if you keep separate policies

• Garaging address for whoever moved. This one is not optional.
• Parking — a shared driveway, a single garage space, a street spot.
• Mileage, if either commute changed. California's rating rules put annual mileage among the primary factors, so a genuine change is worth reporting in either direction.
• Renters or homeowners coverage, which is where both of your belongings and personal liability actually live.

The renters insurance detail couples get wrong

An unmarried partner is generally not automatically covered by the other's renters or homeowners policy the way a spouse is. Two people, two sets of belongings, two liability exposures — and one policy that may only name one of you. Ask directly whether both people and both sets of property are covered, and if not, fix it. It is an inexpensive fix and an expensive discovery.

Sharing a car

If one of you sold a car and you are now down to one vehicle between you, both drivers belong on that vehicle's policy. The person without a car should also ask what happens to their coverage history — going from insured to uninsured leaves a gap that follows them into their next quote. A non-owner policy is one way to keep that record continuous.

If it later becomes a marriage

Then some of this gets revisited again, and combining usually becomes simpler. Nothing you do now is wasted — the address and driver disclosures are the same either way.

Let us price it separate and combined so you can see the difference instead of guessing at it.