Admins could simply remove the houses from you due to lack of money, but they decided not to, by taking all the cash avaliable in your account and putting in the value.
No, you don't lose any cash - maybe the buyout. I've lost 2m under a house I've bought, and it's now removed - Fair, since It's not a place for a house, but you don't see me crying over it

.
This new property system was good in general, maybe destructive to some, but in general, was good.
This will popularize another cities, not only Los Santos, since SF's properties are 40% cheaper than Los Santos.
Unlike some of you think, this will NOT bring 'communism' in argonath, but it will make things fair...
People has been paying 400,000.00 on a skycraper, making them forget about another simply houses over the rest, they were WAY too cheap. This will also make such locations as Grove St, East LS, SF, LV, etc... populated, since they have cheap houses.
Giving a chance to everyone who ever wished to own a big-ass mansion to buy one, after hard-working.
Now, instead of buying great mansions, paying over 3,000,000.00 on a house, players will not worry about making profit in buying big houses, since the value will be like a buyout.
I've seen many players desesperate to sell his house, when they had paid ALOT for the buyout, they didn't want the house no more, they wanted to buy a new one which they like the most, as everyone, this player didn't want to lose cash. - I'm sure most of you already beeing in this kinda situation, as I've been too

- Hope this gone, with this re-valuation.
Regards.