On this page (6 sections)
What hides in a used unit, and where
Water is the first one. It enters at a seam, a penetration, or a failed seal, travels laterally through a wall cavity or along a frame member, and collects somewhere with no relationship to where it got in. By the time it shows as a stain, the affected area is typically several times the visible mark, and the substrate has been losing strength for years. A seller who repainted a ceiling panel has not concealed anything deliberately; the stain simply was the only evidence they could see either.
The second is prior structural repair. A coach that was hit and repaired competently is a fine purchase. One where the skin was rebuilt over an unaddressed cage is a unit that will crack again in the same place, and the tell is subtle: a panel gap that is slightly wider at one end, a door that needs a lift to latch, a slide that binds at one corner, a seam of sealant that is newer than everything around it.
The third is delamination in an early stage. Before a wall bulges visibly, it will sound different. Tapping across a sound laminated panel produces a consistent tone; tapping across a separated area produces a duller, hollower one. On a hot afternoon a ripple that is invisible in the morning will show. This is why an inspection done at ten in the morning in December and one done at three in the afternoon in August are not the same inspection.
The fourth is house systems, which are less catastrophic and more numerous. Roof air, furnace, water heater, generator, converter or inverter, refrigerator, slide mechanisms, leveling, and the plumbing under pressure. Individually each is a manageable repair. Collectively, on a unit where nothing has been maintained for six years, they add up to a number that changes what the vehicle is worth. A short deferred maintenance list is normal on any used unit. A long one is a negotiating position.
What the inspection actually covers
A full systems walk with a written report. Structure first: laminated wall panels sounded across their area, moisture readings taken through walls and floor at intervals, roof inspected from on top of the unit rather than from a ladder at a corner, seams and penetrations examined, frame and suspension checked, and evidence of prior repair identified and photographed where it exists. Anything found is photographed and located on a diagram, so you can see where it sits on the unit rather than reading a description and guessing.
Then the house: shore power and generator circuits, converter or inverter operation, twelve volt distribution, propane system and appliances lit and run, water system pressurized and held, tanks and valves, roof air and furnace cycled, refrigerator brought to temperature, slides extended and retracted and their seals inspected, and leveling exercised. Systems that need time to demonstrate a fault get the time. Where something cannot be tested because a tank is empty or shore power is unavailable, it is reported as untested rather than as working.
Then the part most inspection reports leave out: what it costs to fix what was found, priced at real shop rates rather than as a range. That is the number that determines whether you should walk, negotiate, or proceed happily, and it is a different number depending on whether a soft floor turns out to be twelve square feet or the whole forward third of the unit. The moisture map is what tells you which.
You get the report whether the news is good or bad. There is no interest here in whether you buy the unit, which is the entire reason an independent inspection is worth more than one arranged by the party selling it to you. An inspection performed by the dealer selling the unit carries an obvious structural conflict, however honest the individual doing it happens to be. Buying that independence for a couple of hundred dollars on a five figure purchase is not a close call.
If you are the one selling
The case for inspecting your own unit before listing is straightforward: you find out what a buyer inspector will find, and you get to decide what to do about it on your own schedule instead of during a negotiation. Problems discovered by a buyer inspector cost more than the repair, because they cost the repair plus the leverage plus, often, the sale. Every finding a buyer surfaces gets priced at their estimate of the risk rather than at the actual repair cost, and their estimate is always the higher of the two.
It also lets you separate the two categories that matter. Some findings are worth fixing before listing, typically anything cheap to correct that reads as neglect, because a buyer extrapolates from small things to large ones. Others are worth disclosing and pricing into the number, particularly structural items where a partial fix is worse than none. Knowing which is which requires knowing the actual cost, not a guess. The report gives you the basis for that judgment in writing.
A written independent report also does something for you at the table. A buyer looking at documented condition from a shop with no stake in the transaction has far less room to invent a discount, and a seller who volunteers a report before being asked establishes a tone that carries through the rest of the negotiation. It is also a great deal easier than defending a number you cannot support once a buyer inspector hands over a list.
What it costs and how to arrange it
The RV systems estimate and inspection is $150 and is credited against an authorized repair, so if the unit turns out to need work done here, the inspection cost comes back. If you are buying and the answer is walk away, $150 against a purchase you are contemplating in the tens of thousands is arithmetic that does not need explaining. If you are selling, the same figure buys you a document that shortens a negotiation you were going to have regardless.
Practically, arrange for the unit to come to the shop. All work is performed on site, there is no mobile inspection service, and that is deliberate: sounding panels, taking accurate moisture readings, pressurizing a water system, and getting on a roof safely all depend on equipment and conditions that do not travel. Most sellers will agree to a shop inspection, and reluctance to allow one is itself a data point worth weighing.
Allow half a day, and if you can, schedule for the afternoon on a warm day. Heat makes delamination visible, and a unit that has been sitting in the sun for four hours tells you more than one that was towed in cold. Call (949) 799-3387 to arrange it, and bring anything the seller has provided in writing about the unit history so it can be checked against what the inspection finds.
What you get here
What usually goes wrong elsewhere
- Water damage and prior structural repair are easy to hide and expensive to inherit
- Dealer inspections have an obvious conflict of interest
- A soft floor or delaminated wall can cost more than the unit is worth
How we handle it
- Full systems walk with a written report before you buy
- Moisture mapping and structural assessment on laminated bodies
- An honest number on what the repairs would actually cost here
Relevant services
Vehicles you likely run
Frequently Asked Questions
How much does a pre-purchase inspection cost?
The RV systems estimate and inspection is $150, credited against an authorized repair if you end up having work done. It includes a full systems walk, moisture mapping, structural assessment on laminated construction, and a written report with real repair figures rather than a range. Allow about half a day and bring the unit to the shop.
Can you inspect a unit at a dealership or a seller location?
No. All work is performed at the shop, and that is a deliberate limit rather than a scheduling one. Sounding panels, taking accurate moisture readings through a wall, pressurizing a water system, and safely accessing a roof depend on equipment and conditions that do not travel. Most sellers will release a unit for a shop inspection.
What is the single biggest thing to check on a used RV?
Moisture in the structure. It is the most expensive problem to correct, the easiest to conceal from a casual walkthrough, and the one that compounds, since a wet substrate keeps losing strength. Readings taken through the walls and floor at intervals map the actual extent rather than the visible stain, which is usually a fraction of it.
Will you tell me whether to buy it?
We will tell you exactly what the unit is, what it will cost to correct, and which findings are urgent versus which can wait. The purchase decision is yours and depends on the price and on what you want from the vehicle. There is no interest here in the outcome of the sale, which is precisely what makes the report useful.
Does an inspection help if I am selling rather than buying?
Yes, and the timing is what makes it valuable. Findings you discover yourself get repaired or disclosed on your terms. Findings a buyer inspector produces cost you the repair plus the leverage, and sometimes the sale. A written independent report also gives a buyer far less room to invent a discount during negotiation.