Inspection after conversion: steps, documents, and pitfalls
When converting a van into a campervan, it's not just about the technical inspection you're familiar with for a regular car. Usually, there's a step before that: the approval or homologation of the conversion. Only then comes the inspection after registration, the administrative inspection, the weighing, and finally, the periodic inspection.
By Laurens De Leeuw · 23 June 2026
Your van is finally converted. The bed is in, the cabinets are fixed, the floor is laid, and maybe you've even installed windows, a cooking area, extra electricity, or a pop-top roof. Then comes the less romantic, but important question: how do you get everything officially in order?
When converting a van into a campervan, it's not just about the technical inspection you're familiar with for a regular car. Usually, there's a step before that: the approval or homologation of the conversion. Only then comes the inspection after registration, the administrative inspection, the weighing, and finally, the periodic inspection.
Sounds dry? Absolutely. But it's one of those things you'd best handle well. Because building a beautiful camper is fun, but being rejected because a document is missing or because your weight is incorrect, that doesn't make anyone happy.
First this: inspection and homologation are not the same
Many people confuse the words inspection and homologation, but they are two different things.
Homologation or approval means that the government checks whether your converted vehicle still technically and administratively complies with the rules. For a van that officially becomes a campervan, you often need an individual approval certificate.
The technical inspection comes after that. This checks whether the vehicle is actually in order for use on public roads. After a conversion to a campervan, this includes the administrative inspection, the weighing, and the identification report.
Simply put: homologation is about the official approval of the conversion. The inspection is about the vehicle you ultimately present.
Step 1: determine what your vehicle will officially be
Before you go for inspection, you need to know what your vehicle will be on paper.
Will it remain a light commercial vehicle with loose or limited fittings? Then you're in a different situation than if you officially register the van as a campervan.
If the vehicle officially becomes a campervan, the living area must at least be equipped with a table and chairs, sleeping accommodation, cooking facilities, and storage space. This equipment must be permanently fixed in the living area. The table may be removable.
For a light commercial vehicle with camper fittings, the partition wall also plays a role. A light commercial vehicle with a partition wall between the driver's compartment and the living area can, in certain cases, remain registered as a light commercial vehicle. But as soon as you opt for registration as an M1 campervan, it concerns a change of category and type. Then a new homologation is required.
This is immediately the first major pitfall: building without a clear end goal. Anyone who only decides after the conversion that it should officially become a campervan may encounter surprises.
Step 2: arrange the approval of the conversion
If your vehicle is officially converted into a campervan, the conversion must be approved. For private individuals, this is done via an individual approval certificate.
Who may submit the dossier depends on the date of first commissioning or first registration.
For vehicles from before April 29, 2013, in the case of a conversion by a private individual or a non-recognized manufacturer, a recognized technical service or a technical inspection station can submit the dossier.
For vehicles from April 29, 2013, in the case of a conversion by a private individual or a non-recognized manufacturer, only a recognized technical service can submit the approval dossier.
This is important for most modern vans. Think of recent vans such as a Ford Transit, Volkswagen Crafter, Mercedes Sprinter, Renault Master, Fiat Ducato, Peugeot Boxer, or Citroën Jumper. With such a vehicle, it's best not to wait until the very end to go for inspection. Contact a recognized technical service in time and ask what exactly they expect.
Step 3: collect your documents during construction
A conversion dossier is not something you quickly put together afterwards. During construction, it's best to already collect photos, plans, certificates, and technical information.
For an individual approval, these things may be requested, among others:
- photos of the four sides of the vehicle
- photos of the interior
- extra detailed photos of important modifications
- detailed plans with dimensions
- completed forms
- test reports and checklists
- drawings with date and signature
- any partial approvals of components
- copy of the registration certificate
- agreement from the base manufacturer for conversion
That agreement from the base manufacturer is an important point. The manufacturer or their representative indicates which modifications are allowed and whether the vehicle may be converted. Especially for interventions such as a pop-top roof, sleeping roof, modification of seating, seat belt points, or structural modifications, this can be crucial.
My personal advice: take more photos during construction than you think you'll need. If something is later built in behind wood, insulation, or panels, you can't just show it anymore. That seems exaggerated until you're at the counter and someone asks how something is exactly attached.
Step 4: check sensitive points before going for inspection
Not every part of a camper conversion is equally critical, but some things cause problems more often.
Seats and seat belts are very sensitive. Seats used while driving must be correctly approved. Headrests, seat belts, and anchor points must also comply with the rules. Side seats may no longer be used while driving since October 20, 2007, and are therefore no longer granted as official seating.
Swivel plates also deserve extra attention. If you modify an original seat by placing a swivel system underneath it, the original approval of the seat may lapse. Then you must be able to demonstrate that the combination of seat and swivel plate complies.
Windows and glazing must bear a European marking. This also applies to transparent panels. A cheap window without correct marking can later become an expensive mistake.
A pop-top roof or sleeping roof must comply with the conversion guidelines and the agreement of the base manufacturer. This is not a detail, because you are affecting the roof structure of the vehicle.
The emergency exit is also important. The living area of a motorhome must have at least one easily accessible emergency exit that is not in the same wall as the service doors. The minimum dimensions are 400 mm x 600 mm. If the emergency exit can only be opened by breaking glass, an emergency hammer must be attached in the immediate vicinity.
Step 5: consider weight and payload
During the inspection after conversion, your vehicle will be weighed. This weighing determines the tare weight of the converted vehicle.
For a campervan, the tare weight is determined with, among other things, coolant, lubricating oil, tools, and spare wheel, without a driver, with the fuel tank at least 90 percent filled, and with drinking water and gas also at least 90 percent filled.
This is a point where many self-builders miscalculate. An empty van seems spacious enough, but a camper conversion quickly becomes heavy. Wood, insulation, floor, furniture, battery, solar panels, inverter, water, gas, bike rack, tools, and luggage all count.
And in my case, Grephar would also happily jump in as if he weighed nothing.
Anyone who wants to continue driving with a B driving license must take into account the maximum authorized mass of 3,500 kg. It is therefore smart to weigh during construction. Not just when everything is ready.
Step 6: the inspection after registration
A campervan must be presented at an inspection station for an administrative inspection and weighing before being put into service. This happens after every new registration following the second-hand inspection of the vehicle. Afterwards, you will receive a new identification report.
At the very first registration, the first periodic inspection is also carried out.
According to Autoveiligheid, you cannot make an appointment for the administrative inspection and weighing. The vehicle must be presented on a separate queue lane, the re-inspection line for commercial vehicles. For the first periodic inspection, the vehicle can be presented with or without an appointment.
The inspection after registration can take place at any inspection station.
Which documents do you take to the inspection?
For the inspection after registration of a campervan, you take the original documents with you. Copies are therefore not a good idea.
You need at least these documents:
- registration certificate or proof of registration
- certificate of conformity or Certificate of Conformity
- last inspection certificate, if the vehicle was previously inspected
- identification report, if the vehicle was previously inspected
For a conversion, it is also best to bring all relevant documents that belong to your approval, such as your individual approval certificate, certificates, test reports, partial approvals, plans, and any approval from the manufacturer. Even if not everything is standardly requested at the counter, you'd rather have too much than too little.
For imported vehicles that were previously registered in another EU member state, the same obligation regarding the certificate of conformity does not always apply. But if such a vehicle was converted after registration, this can become important again. In case of doubt: inquire in advance at the inspection station or technical service.
What do you get after the inspection?
After the administrative inspection and weighing, you will receive a new identification report. This document contains important technical data of the vehicle as determined after the conversion.
If the vehicle is approved, you can proceed with registration and normal use. If it is rejected, you must have the problems repaired or adjusted and then return for a re-inspection.
This can be about big things, such as seats, weight, lighting, or documents. But sometimes it's also about details that you could have avoided beforehand.
Periodic inspection after the conversion
After the first inspection, the story does not end. A campervan must then, in principle, go for a periodic inspection annually.
For the first periodic inspection, you will not receive an invitation. Afterwards, an invitation is normally sent, but the absence of an invitation is not a valid excuse to drive around without a valid inspection certificate. So you must keep an eye on the date yourself.
This is such a typical administrative detail that is easily forgotten, especially if you are mainly busy with traveling, building, and making plans. Just put it in your agenda. That saves stress.
Common pitfalls during inspection after conversion
The biggest pitfall is starting to build without knowing beforehand whether you want to remain a light commercial vehicle or officially become a campervan. That choice determines much more than people think.
A second pitfall is insufficient documentation. Photos, plans, and certificates may seem boring during construction, but they can later make the difference between smooth approval and having to start looking for evidence again.
Weight is also often underestimated. A few sturdy wooden furniture pieces, a heavy battery, and a full water tank can quickly do more than you expect.
Seats and seat belts are another classic. A beautifully placed bench is not automatically an approved seat for on the road. The same applies to swivel plates and extra seats.
Windows without correct European marking can also cause problems. Just like a pop-top roof or sleeping roof without proper documentation or manufacturer's agreement.
Another pitfall is thinking that the regular technical inspection will solve everything. With a real conversion, you often first need an approval dossier. The inspection is then not the first step, but one of the last steps.
Practical checklist before you leave
Before you go to the technical service or inspection, it is best to check the following again:
- Is it clear whether the vehicle remains a light commercial vehicle or becomes a campervan?
- Do you have the individual approval certificate or is your dossier handled by the correct technical service?
- Do you have original vehicle documents with you?
- Do you have photos and plans of the conversion?
- Do you have certificates or partial approvals for windows, seats, seat belts, swivel plates, or other components?
- Do you have the agreement of the base manufacturer if necessary?
- Are the fixed furniture pieces securely fastened?
- Do cabinet doors and drawers close properly?
- Are windows and transparent panels correctly marked?
- Is the emergency exit accessible?
- Is the weight still within the maximum authorized mass?
- Are lighting, reflectors, tires, and general technical condition in order?
This checklist does not replace an official check, but it does help to not go to the inspection blindly.
Conclusion
The inspection after conversion is not a mere formality that you quickly arrange at the very end. It is the culmination of a process that actually begins before you screw the first plank into your van.
Anyone who wants to officially convert their van into a campervan must take into account approval, documents, technical requirements, administrative inspection, weighing, and annual periodic inspection.
That may sound like a lot of hassle, but it also has an advantage. If everything is correctly in order, you can set off with a calmer mind. No doubt about your papers, no stress during checks, and no uncertainty about insurance or inspection.
So a good camper conversion is not only beautiful and practical. It also holds up on paper.
Source: https://www.autoveiligheid.be/autokeuring/kampeerwagen/periodieke-keuring
Source: https://www.autoveiligheid.be/autokeuring/kampeerwagen/keuring-na-inschrijving