A big caravan can be more luxurious than a tiny house and it may help avoid some over the top compliance issues.
As part of my job I have to look inside motorhomes (finding the VIN number). I'm astonished how luxurious some of them are. Wonder if I could pull my Kiwisaver out for "house"...
That's true, but I'd rather not a caravan - was thinking of building something myself with a rather less mass-produced feel to it.