Every owner knows their motorhome needs an MOT. Far fewer know it also needs a habitation check, and the confusion between the two catches people out constantly. I get asked about this more than almost anything else when people find out I have owned two motorhomes, so it is worth setting out properly what a habitation check actually is, what it covers, and why skipping it is a false economy.
The short version is that your MOT checks whether the vehicle is safe to drive. A habitation check looks at everything that turns that vehicle into somewhere you can actually live. Gas, electrics, water, damp, safety devices. None of that is covered by an MOT, and none of it is optional if you want to keep using the van without a nasty surprise.
What a habitation check actually involves
A proper habitation check is carried out by a qualified engineer, usually at a dealership or an approved workshop, and takes somewhere between two and four hours depending on the size and age of the van. It is not a quick once over. A good engineer will go through the gas system under pressure, test every electrical circuit, check the water system for leaks, inspect the fridge and any gas appliances, test the smoke alarm and carbon monoxide detector, and check the door seals and roof lights.
The bit most owners have never heard of until their first check is the damp survey. The engineer uses a moisture meter to test readings around the walls, floor, roof and window frames. This is the single most important part of the whole check, and I will come back to why in a minute.
Why the damp reading matters more than anything else
Damp is the thing that actually kills motorhomes. Not the engine, not the habitation systems failing gracefully, but water getting into the body shell and rotting the timber frame underneath the fibreglass or aluminium skin. Once that starts, it spreads quietly for months before it becomes visible, and by the time you can see it with the naked eye the repair bill is often more than the van is worth.
A yearly damp check catches this early, while it is still a small patch you can dry out and reseal rather than a structural repair. It also matters enormously for resale. Buyers and dealers alike will ask for a full habitation history, and a van with an unbroken run of clean damp readings is worth noticeably more than one with gaps or a bad reading buried somewhere in the file.
How often you actually need one
Once a year, without exception, for the life of the van. Most manufacturer warranties on newer motorhomes are conditional on an annual habitation check being carried out and documented, so skipping a year can void the warranty even if nothing has actually gone wrong. I learned this properly when I bought my Swift KonTiki 774 new, and the paperwork was explicit about it in a way my previous van never was.
Even once the manufacturer warranty period ends, I would still book one every year. The cost is small compared to what a missed leak or a failed gas test could turn into, and most owners who skip a year do so because they assume everything is fine. Everything is fine right up until it is not, and damp does not announce itself.
What it costs and what happens if something fails
Prices vary by dealer and van size, but you are typically looking at a few hundred pounds for a thorough check. If something fails, you get a written report with the fault and a recommendation, and in most cases it is a straightforward fix such as resealing a window or replacing a smoke alarm battery pack. Genuinely serious findings are rare if you have been getting checks done consistently, which is exactly the point of doing them consistently.
What you should never do is treat a failed reading as something to deal with later. A small damp patch left over winter can be a much bigger repair by spring. I have seen the insurance implications of ignoring exactly this kind of thing play out for other owners, and it is worth reading what I wrote about motorhome insurance in the UK if you want the full picture of where cover does and does not help you when maintenance has been neglected.
My own experience with it
I book my habitation check at the same time every year, timed for just before the main season starts so any work needed gets done while the van is not in heavy use. It has never once found anything dramatic, because I have never skipped a year. That is not luck. It is the entire reason the check exists.
The one thing I would say to any new owner is to actually read the report rather than filing it away. Ask the engineer to talk you through anything marked as advisory rather than an outright fail. Advisories are often the early warning that saves you money two or three years down the line, and they get missed constantly because owners only care about the pass or fail line at the top of the form.
Do not treat it as optional
If you own a motorhome and have never had a habitation check, book one. If you have had one before but let it lapse, book one now rather than waiting for the next service window. The cost of the check is trivial compared to the cost of a structural repair, a voided warranty, or a lower resale value because your paperwork has gaps in it.
I wrote about the wider realities of ownership in my honest review of the Swift KonTiki 774, and habitation checks are one of those unglamorous parts of the lifestyle nobody puts in the brochure. Get into the habit early and it becomes a routine ten minute conversation with an engineer once a year rather than something you dread.
