Every car has to be registered in a state and insured to an address where it's kept. If you live on the road, you have neither in the way those systems expect - and the gap doesn't announce itself. Nothing bounces. No letter arrives telling you it's a problem. The arrangement simply holds until something tests it, and most people never find out which parts were load-bearing.
Two addresses, and a car at neither
Here's ours, because the shape matters more than the specifics. We're domiciled in Washington - that's the legal home address, and it belongs to family. There's also a mail forwarder, in the same state. The car is registered there and insured there.
The car is not there. She's wherever we are, which is mostly somewhere else entirely - a driveway in the desert, a street outside somebody's house we're sitting, a hotel garage in Nevada. Two addresses doing two different jobs, and the vehicle at neither of them.
That's not an edge case. It's the standard arrangement for anyone doing this, and almost every guide written about it treats the setup as the answer. It isn't the answer. It's the thing that needs explaining.
Registration is the easy half
The rules themselves are usually undemanding, and Washington is friendlier than most. The state's emission check programme ended on 1 January 2020, so there is no test to pass and nothing to physically present (Dept. of Ecology). Tabs renew online through the Department of Licensing. No inspection, no appointment, nobody who needs to see the car.
Which means the whole process works remotely - right up until the part that travels by post.
Our tabs were issued correctly and sent to the mail forwarder. They never arrived. We asked family whether anything had turned up at the legal address - nothing there either. Somewhere between one Washington address and another Washington address, they vanished.
They got fixed the only way they could be: my partner happened to be in town, went in, and had them reprinted. By the time they were on the car we were about three months late.
Read that failure carefully, because it isn't the one anybody warns you about. We didn't miss a deadline. We didn't fail a test. We weren't out of compliance with a single rule. The system worked and the envelope didn't - and the fix required a human body in a specific town, which is the one resource this life is short of.
Meanwhile the car was on the road with expired tabs, which in most states is a stop-and-ticket offence. Not because of anything we'd done wrong, and with no way of knowing until we looked at the plate.
So the practical question for registration isn't "can I meet the requirements." It's which parts of this depend on paper reaching an address I'm not standing at - and what happens when one of them doesn't.
Insurance is the half with teeth
Your policy is rated on a garaging address: where the vehicle is normally parked overnight. Insurers price on it because risk is intensely local - the claims and theft history of a ZIP code is a real input, not a formality. It's why the same driver and the same car cost different amounts in two towns.
When the garaging address isn't where the car actually sits, you're in the territory insurers call material misrepresentation. And that phrase has a precise meaning, not a vibe. New York's insurance regulator states the test plainly: a misrepresentation is material only where "knowledge by the insurer of the facts misrepresented would have led to a refusal by the insurer to make such contract" (N.Y. Ins. Law §3105(b), via NY DFS).
That reframes the question usefully. It isn't "did I lie?" It's would they have written this policy, at this price, if they'd known where the car really lives? You can answer that honestly without a lawyer, and the answer tells you how exposed you are.
"There's a full-timer policy for people like us."
There is a product called full-timer's coverage, and it is an RV product. It's written for people using a motorhome or travel trailer as their primary residence, typically more than six months a year, and it adds things a house policy would normally cover - liability around the rig while it's parked, loss assessment. If you sleep in houses and drive an ordinary car, you are not who it's for. The entire nomad-insurance conversation is RV-shaped, and a house-sitter with a normal vehicle falls straight through the middle of it.
What would actually happen at a claim
The internet's version is that your claim gets denied, full stop. The regulator's version is more specific, and in one direction it's better news than the scare stories.
Where a policy carries the liability coverage a state requires, New York's regulator says an insurer generally may not void it retroactively for material misrepresentation - because voiding it would strand an injured third party, and public policy won't allow that. What the insurer can do is cancel going forward (N.Y. Ins. Law §§3425, 3426; Veh. & Traf. Law §313).
So the part that protects other people from you is the sturdiest part. The exposure sits elsewhere: the coverage that pays for your own car, and the fact that you can be cancelled - which is a genuinely bad thing to be, because it follows you into every quote you ask for afterwards.
One caution: that's New York law, and this is state by state. The shape of the test travels; the outcome doesn't. Read your own state's rules rather than assuming a regulator two thousand miles away speaks for yours.
Ours has never been tested
It would be easy to end this with a system that works. I don't have one.
We've never made a claim. Nobody has ever asked us, in writing, where the car sleeps. We've had work done on her in states that aren't Washington, so a carrier who went looking could see the pattern without much effort - and nobody has gone looking, because nothing has happened that would make them.
That is not the same as being fine. It's an arrangement that has never met the event it would be tested by, which is exactly where most people reading this are standing too. Saying so plainly seems more useful than pretending the question is closed.
So what should you actually check
1. What does your registration state require you to physically do? Washington: nothing, since 2020. Inspection and emissions states are a different life - and that requirement, not the tax rate, is often the real argument for where to domicile.
2. Which steps depend on post arriving somewhere you aren't? That's the one that actually failed for us. Renewal reminders, tabs, cards. Find the paper in the process and make it not matter.
3. Ask your carrier the garaging question before a claim asks it for you. "The car isn't kept at that address most of the year - what do you need from me?" A re-rate you chose is a much smaller thing than a cancellation you didn't.
4. Don't reach for a full-timer policy. If you're not in an RV, it isn't yours to reach for.
Where your vehicle spends its time can also trigger residency in a state you never intended to join - California in particular counts vehicles by where they mostly are, not where you say you live. That's what triggers California residency →, and the broader question of having a tax home at all is US state residency when you don't have a home →.
Most of this turns on days in places, which is a counting problem before it's a paperwork problem. Two free tools do the counting:
Latitude computes your most-days state and flags the vehicle rule looking forward; Sojourn tallies the days themselves. Both run entirely in your browser - nothing is sent anywhere.
Sources
Washington State Dept. of Ecology, emission checks ended 1 January 2020 · Washington State Dept. of Licensing, renew or replace vehicle tabs · NY Dept. of Financial Services, OGC Opinion 06-12-11 (material misrepresentation and voiding a motor vehicle policy; N.Y. Ins. Law §3105(b), §§3425-3426) · Progressive, what full-time RV insurance is.Not legal, insurance, or tax advice. This guide explains how these rules generally work and points you at the official sources; it is not a substitute for a qualified advisor or a licensed agent. Insurance law is state-specific and the cited regulator's opinion speaks for one state only. Rules change - the "last checked" date above is when this page was last verified. Confirm anything that matters with your state's licensing agency, your insurer, or your own insurance commissioner before you rely on it.