From what I've read, as long as the wines are not subject to very high or low temperatures, or sudden swings in temperature, and are not near strong odours or vibrations, they'll be fine. That's been my experience to date.
I ask because we are thinking of simply building walls around our current wine racks in the corner of the cellar to store them while we're out of the country for a few years. Yes, I will have to trust the tenants, but colleagues have done what we're considering and all has gone well. The storage would be written into the lease.
I thought about buying a Vinocellar but for less money, perhaps much less, we can build a cold cellar which would offer more potential uses. And we'd still have to trust the tenants. Besides, how would I ever get my vinocellar out of the basement if we sold the house? Off-site storage for my current holdings would be about $1000 a year which seems expensive.