Benefits of indoor storage

Sorry, but my advice is to use it frequently, not store it. It’s a motor vehicle and needs to keep the oily bits turning.

That said, as it's a motor vehicle, it’s built for the great outdoors and as far as I can see the only advantage to storing it indoors will be to keep it cleaner. Only you can decide if being cleaner is worth the cost.🙂

Mr VB always maintains that UV does more damage to caravans/motorhomes than anything else, so we keep ours under cover. It’s a 19 year old Bessacarr. We are only the second owners, the first having kept it in a heated barn! We don’t have any water ingress or sign of damp anywhere. 

...but arent you a caravanner?....without the issues of 'oily bits' and keeping batteries charged...

i agree with TW, it needs to be used.....once a month is good, 12 times a year is more than many, but internal storage wont allow solar panels to keep your batteries charges, a (repeated) flat cab battery is common and annoying, and eventually damaging.

i realise work gets in the way, but if there were any chance of keeping it at home, id do that...

easy to get to ehu if required, easy to load piecemeal in readiness for any quick getaways...topping up water, charging cassette etc, all so much easier as is any remedial work or improvements you wish to make...access to tools an materials etc..

 why pay all that cash not to use it?

good luck

Over the many years and LVs we have had from trailer tents to caravans, and motor caravans they have all been stored outside, some of the early c/vans were susceptible to damp the worst being a Swift,but as materials and sealants have improved over the years it is more down to poor workmanship that causes problems, and talking to others it is not just UK built either, our last models cannot get damp as they have nothing in the build that will rot even if the sealant fails, so storing outside is not going to hurt apart from getting dirty, and that is worse on the roof which can be mostly overcome with a roof cover