Hi there! I saw this job and thought I'd throw my hat in, it looks like cool idea which could be created quickly and efficiently.
For this project I would suggest either a 2D treatment, a bit like the cutout style of animation (like South Park) or a simple 3D whitespace scene with very basic characters (imagine chess pawns with arms and legs. It would be up to you which you'd prefer.
I like those ideas for the animation and have one to add myself. Someone who is moving into his accidentally parks his truck in front of another storage unit and traps the owner inside. He only notices that something's up when the truck starts to tilt: the owner has used a jack to lift the truck high enough for him to crawl underneath. He doesn't look very happy when he escapes, and the truck driver shrugs in apology. From there we cut to a logo splash and your company's slogan, if you have. We could even add another scene at the end after the logo splash, where the truck has moved but now traps another poor person in their unit! Or, the whole animation could take on a reverse situation: we move a truck to see a man with sunnies and a deckchair (units so good, you could live in them!).
Have a look at my animations linked from my profile and let me know if you'd like me to work on this. I'm open to discussion and will happily answer any questions you might have.
Thank you for your consideration,
Julien Le Cocq