A converted campervan is two things at once. It is a vehicle, and it is a living space. The build can run anywhere from a modest weekend fit-out to a professional upfit costing more than the chassis it sits on. Standard auto policies are written for the vehicle and say almost nothing about what was built into it, which is where owners find the gap.
Placing coverage on a conversion takes more work than a factory Class B, but it is routinely done. What it takes is documentation, an honest description of the build, and starting the conversation before the work is finished rather than after.

When does a converted van become a housecar in California?

California Vehicle Code section 362 defines a housecar as a vehicle permanently altered and equipped for human habitation, and the DMV’s registration manual treats van campers as housecars. The DMV’s registration manual sets out a process that includes a REG 256A form with the human habitation certification completed, which is what changes the body type on record from cargo van to housecar.
The state also requires the value of added equipment to be included in the vehicle’s value for license fee purposes. That is worth noting, because it is the same logic the insurance side should follow. The build is part of what the vehicle is worth.
Underwriters apply a similar test. Carriers writing Class B campervan coverage generally look for a permanently installed sleeping area, permanent cooking facilities, and a fresh water system. Removability is the practical line. A mattress that lifts out and a camp stove in a crate keep the van a van. A bolted bed platform, a fixed cooktop, and plumbed water do not.
Registration and insurance classification are separate questions, and they do not always move together. A carrier can write specialty coverage on a vehicle still titled as a van, and a housecar title does not by itself obligate a carrier to write the risk.
Registration rules change, and they differ from state to state. Confirm the current requirements with the California DMV, or with the equivalent agency where the vehicle is registered, before relying on any of this. A titling or registration question is one for the DMV or an appropriate advisor rather than for us.

Should you insure the van before converting it?

Insure the van as soon as you buy it, even though work is about to start. That protects it against damage or theft during the conversion, which can run for months in a driveway or a rented bay. At this stage it is ordinary auto insurance on an ordinary vehicle.

What do you have to tell your agent about the build?

Tell the agent what the van is going to become, and roughly what the conversion will cost. Anything that changes how the van looks or works counts as a modification, and that includes interior work: a pop-top, skylights, seating, soundproofing, cabinetry, a power system, a gas system. Each one should be disclosed. An undisclosed build is a common reason a claim on a conversion runs into trouble.
Not every agent has placed a conversion before. Having that conversation early is usually the difference between one policy that follows the van through its whole life and a scramble for a new market once the build is done.

Do you need RV insurance or is auto insurance enough?

There are two policy types in play, and a separate question underneath them about how the build itself is accounted for.
Auto insurance covers the van as a vehicle, and it fits while the fit-out stays light and removable. It does not cover build materials or what is stored inside: the fridge, the electrical system, the water system, camera gear.
Recreational vehicle insurance is written for a vehicle that is also a dwelling, and it is the usual answer for a campervan once the interior carries real value. It can extend to contents and personal effects traveling with the van.
Carriers differ in how they handle the conversion cost, and that variation matters more than the label on the policy.

How is a van conversion valued for insurance?

How a conversion gets valued decides whether the coverage is real. Actual cash value depreciates the build, which is why owners of a significant conversion generally look at other options. Agreed value or stated value fixes the figure in advance, which is what most owners of a significant build want. Getting there means documenting the cost rather than estimating it, and on an owner-built van it usually means an appraisal as well.
How the conversion cost is applied varies by carrier and by process. Some treat the build as custom equipment carrying its own limit, separate from the vehicle. Others fold it into the agreed or stated value of the vehicle as a whole. Either approach can work, and either can leave a build underinsured if nobody checks the figure. The question worth asking is how this carrier accounts for the conversion, and whether the resulting number matches what the build actually cost.

Can you insure a DIY van conversion?

Who built the van is the factor that most often decides whether a conversion gets covered at all, and it is worth understanding before the build starts rather than after.
Some carriers will only write a van converted by a shop whose primary business is conversions, and will look for a real place of business, licensing, and a verifiable trading history. A professional build also comes with invoices, which do most of the valuation work on their own.
Owner-built vans face a narrower market. Programs that do accept them set their own eligibility rules, and those rules are worth checking early because they are not negotiable at quote stage. Restrictions commonly touch on the age of the vehicle, its prior use and registration history, its weight, and the value of the finished build. A heavy conversion may fall outside personal lines altogether and need to be written as commercial auto insurance. Eligibility varies between programs and changes over time, so the practical step is to ask what a given market requires before the build is finished rather than after.
Where a DIY build is accepted, expect to work for it. Photographs of the build in progress are commonly required before approval, and agreed value usually depends on a professional appraisal rather than a receipt file. An appraisal is a real cost and generally worth it on a significant build, because it is what converts documentation into a number the policy will actually pay.
None of this makes an owner-built van uninsurable. It does mean the list of markets is short, and that the conversation is worth having before the first panel goes in.
Fitted-out vans also concentrate exposures a cargo van does not have. Propane appliances, a heater, and a house electrical system all sit inside an enclosed space that is sometimes slept in. Underwriters ask about these, and how the systems were installed matters to the answer.

What documentation do insurers ask for?

Insurers will usually ask for purchase records to value the finished vehicle. A running spreadsheet, kept from the first purchase through the last, is far easier than reconstructing it at the end. Organizing receipts by system rather than by date helps: plumbing, electrical, appliances, insulation, cabinetry. That structure matches how a valuation gets built and how a claim gets adjusted.
If a professional shop did the work, keep every invoice they issue. That paperwork does the same job and carries more weight.
Photographs matter as much as receipts. Capture all four sides of the vehicle, the cooking area, and the sleeping area. Shots taken mid-build, showing wiring runs and framing before they were closed up, are worth more than finished ones, because they show what is behind the panels.

What changes if you live in the van full time?

If the van is a residence rather than a weekend vehicle, that has to be declared. Many carriers restrict or exclude full-time use unless it is disclosed, and a claim is the wrong moment to discover it.
Where it is disclosed, RV policies commonly offer full-timer’s coverage, which adds the protections a homeowners policy would otherwise provide. That typically includes personal liability while the van is parked and being lived in, medical payments to others, personal effects coverage at a meaningful limit, and loss assessment on some forms.
A standard auto policy is not written to provide those. Its liability follows the use of a vehicle rather than the occupancy of a dwelling, so injuries to a guest inside a parked van may not fall where the owner assumes. The policy form decides it. For a recreational user, a homeowners or renters policy usually picks up contents and liability. A full-timer has no such policy behind them, which is exactly why the endorsement exists.

What is the difference between loss of use and emergency expense coverage?

Loss of use and emergency expense coverage get confused constantly, and they answer different problems.
Emergency expense coverage responds at the moment of the loss, when the van is disabled away from home. It funds transportation and lodging so you are not stranded, and it usually carries a distance trigger, meaning the loss has to happen beyond a set number of miles from the residence. It is built for the trip that ends badly.
Loss of use responds during the repair. It covers a substitute vehicle or temporary accommodation while the van sits in a shop after a covered loss, and it is measured in weeks rather than hours. Specialist conversions can wait a long time for parts and for a shop willing to work on them, so the daily limit and the maximum period both matter more here than on a family car.
For a full-timer the second one is not an inconvenience benefit. It is the closest thing to additional living expense on a homeowners policy, because the vehicle in the shop is also the house. A limit sized for a few nights in a hotel does not answer a repair that runs two months. Read the daily figure and the cap together, not separately.

Where to start

Forms differ between carriers and change over time, so the policy language governs in every case described here. We walk through what the build includes, what it cost, and which forms are available for it. You decide what the van carries. If the build is finished, start with a quote request and bring the receipts.
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