Too naive, I'm afraid (as well as, in my opinion, misguided).
Just put yourself in the shoes of the investor. Government announces they're gonna make you pay through your nose if no one "lives" in your apartment.
Leaving aside the dubious morality of such penalization (it's a slippery slope!), is your reaction going to be "Oh noes, I am ruined! Better sell my apartment now."? Or can you think of half a dozen simple, practical ways around it?
Florida does this already, the Homestead Exemption, which taxes homes (condominiums and townhomes, etc) by lowering the home appraisal by $25,000 (for tax purposes). But it only applies to one house as long as you designate it your "permanent residence" (so if you only live in Florida part time, you don't get it). Somehow, we still have plenty of apartments here in Florida.
It is very hard to get around residency because someone living at that address needs to pay income tax. You can even rebate back the occupancy tax via the income tax or sales tax systems.
If you don’t want to do this you can do random surveys of the suspect property (say any property without a taxpayer) and if it is unoccupied more than a few times and not registered as unoccupied then a big fine results.
Finally, the owner does not need to sell, just have tenants. What you want to avoid is housing sitting empty or only being used as a holiday home a couple of weeks a year.
I hate to break it to you but there are dozen of authorities that can come around and inspect your property whenever they want - this slippery slope has long gone.
I have no problem with someone with the appropriate authority politely knocking on my door to see if I am home if I am claiming a large tax refund for living there. The IRS and its fellow ilk are far more intrusive - the IRS makes my life a pain as it is and I am not even a US taxpayer.
Where do you live that "dozen of authorities" can come around and inspect your property at will?
I see where you're coming from, but as is probably obvious, I don't subscribe to your "If you've got nothing to hide, you've got nothing to fear" world view on government surveillance. This seems to be the root of our disagreement here.
Just put yourself in the shoes of the investor. Government announces they're gonna make you pay through your nose if no one "lives" in your apartment.
Leaving aside the dubious morality of such penalization (it's a slippery slope!), is your reaction going to be "Oh noes, I am ruined! Better sell my apartment now."? Or can you think of half a dozen simple, practical ways around it?
I bet you have already.