Converting a van into a camper in Spain is much more than just adding a bed, a kitchen unit, and a couple of windows. The moment you touch the bodywork, change the vehicle's use, or install a gas cylinder, you enter the realm of... major van renovationRegulated by Royal Decree 866/2010 and the Ministry of Industry's Reform Manual. And that's where the difference between passing the ITV (vehicle inspection) on the first try or having your van stuck for months lies: understanding when a garage certificate is sufficient and when you absolutely need to go to an accredited laboratory first.
Let's break it down calmly, because there are a lot of myths circulating on camper forums.
What exactly does Royal Decree 866/2010 say?
El Royal Decree 866/2010 reforms This is the regulation that governs the processing of modifications to already registered vehicles. It defines what constitutes a modification, how it is classified, what documentation is required, and who can certify it. Alongside this regulation, the Modifications Manual (updated periodically by the Ministry of Industry) details the modification codes—the well-known "regulatory acts"—that apply to each case.
In plain English: any modification that alters the technical, structural, or usage characteristics listed in the vehicle's registration document is considered a modification. And almost everything we do to a camper van falls into that category.
Significant reform: the key concept
An major van renovation This refers to any modification that significantly affects the vehicle's structural or safety elements, its use, or its performance. Changing a radio is not the same as cutting the roof to raise it. The former doesn't even require paperwork; the latter demands a technical project, certification, and, in many cases, laboratory testing.
The Manual classifies the modifications into large groups: vehicle identification, driving unit, transmission, axles and suspension, steering, brakes, bodywork, lighting devices, tractor-trailer connections and other modifications (which include gas, housing, etc.).
The three documents they may ask you for
Depending on the type of renovation, they will ask you for one of these three:
- Vehicle manufacturer's certificate: only valid if the modification is permitted by the brand.
- workshop certificate: when the reform is standardized and does not require calculations or tests.
- Technical project + certificate of construction management + accredited laboratory report: the serious combo, for major reforms with structural or safety impact.
Here's the crux of the matter: many campervan conversion enthusiasts believe that a workshop certificate is sufficient for everything. That's not the case.
When do you absolutely need an accredited laboratory?
You need vehicle modification laboratory accredited by ENAC when:
- The modification affects the vehicle's structure (raising the roof, opening windows in structural areas, and reinforcing the chassis).
- Change the vehicle category or use (from N1 van to M1 camper).
- Maximum masses, axles or suspension are modified.
- Systems that require testing are installed (some gas installations, certain connections).
Without that report, the vehicle inspection station won't approve the vehicle. Period.
Practical cases in a camper
Roof lift
Pure structural reform. You need technical project van renovation signed by an engineer, resistance calculations, test or supporting report from the accredited laboratory, certificate of work management and, afterwards, ITV.
Opening of side windows
If the windows are the manufacturer's approved type for their intended openings, a workshop certificate is sufficient. However, if you create new openings in structural steel, it will be considered a major renovation requiring laboratory approval.
Van conversion to campervan
Converting a vehicle to a campervan requires meeting minimum requirements (fixed bed, table, seats, kitchen with water point and storage) and processing the reduced specifications van that reflects the change of use. Requires a project and a compliance report.
Gas installation (LPG for cooking/heating)
Mandatory authorized installer, gas installation certificate, leak test, and registration with the relevant industry authority. This is a renovation with a specific permitting process.
Solar panel, auxiliary battery, interior cabinet
If they don't affect the vehicle's structure or electrical system and are removable, they are not usually processed as a modification. If the auxiliary battery is connected to the vehicle's system, it depends on the installation.
The process for homologate campervan conversion in Spain
- Technical project (if applicable) signed by a qualified engineer.
- Execution of the renovation in the workshop (with bulletins, invoices and certificates for each installation).
- Engineer's certificate of work management.
- Certificate of conformity from the accredited laboratory if the reform requires it.
- Application in the ITV camper vanYou submit all the documentation, they inspect the vehicle and, if everything matches up, they issue a new technical data sheet with the modification codes noted.
- If there is a change of use, the process must be completed at the Traffic Department to update the vehicle registration certificate.
Mistakes that many campervan conversion enthusiasts pay dearly for
- Doing the lift "on your own" without a project and discovering at the vehicle inspection station that they don't approve it.
- Confuse camper van conversion homologation with simple periodic inspection.
- Installing gas without an authorized installer.
- Thinking that painting the exterior or tuning the suspension is not processed (it is processed).
- Do not keep invoices and certificates for each element (windows with approval number, skylights, electrical installation).
How much does it cost and how long does it take?
A complete campervan homologation process, including the installation of a lift, windows, gas system, and conversion to a dwelling, can cost between €1.200 and €2.500 for the project, laboratory testing, and fees, not including the construction work. Processing times range from 4 to 12 weeks, depending on the laboratory and the autonomous community.
FAQ
Does every camper conversion need to go through a laboratory?
No. Only when the modification is structural, changes the vehicle's use, or affects safety/performance. Many removable interior installations don't require laboratory testing, but they may require a workshop certificate and registration at the vehicle inspection station (ITV) if you convert it to a campervan.
Can I do the renovation myself and then get it approved?
The regulations allow self-build projects, but you will still need a technical project signed by an engineer, certificates for each installation (electrical, gas) from an authorized installer, and, if applicable, a laboratory report. The vehicle inspection station (ITV) does not approve vehicles based on "good faith."
What happens if I drive a camper van without it being certified?
It's a serious offense. It could result in a fine, possible vehicle impoundment, and, above all, serious problems with your insurance in case of an accident: they may not cover you for undeclared modifications.
Does roof elevation always require an accredited laboratory?
In practice, yes, because it affects the structure and the strength of the passenger compartment. You will need a project plan, test report or supporting documentation from the laboratory, and a certificate of construction management before going to the vehicle inspection station (ITV).