Dramatic increase in price of Sim's home?

Could it be due to vehicles? Cars owned by members of the household tend to be counted as lot assets when they are parked there, but not when they are in use. Sometimes it just depends on when the property valuation takes place. You can check on this more precisely with MC's Status > Household command.

By the way, 16% for property tax seems really high (to me). I have castes set up to designate tax classes based on Net Worth so that the wealthier sims in each world pay higher tax rates than those on the lower end. It's different in each world because costs of living vary so much, but usually the most upper class maxes out at 4 or 5%. But then, I also impose an Income Tax (SP Money) of 5% on the middle classes and 10% on the upper so some of this evens out in the end anyway, provided the sims are actually earning income and not merely trying to live on "Old Money."

Ha, my main legacy household is indeed "Rich" by any designation but I prefer to think of them as "Comfortable." They do work very hard and also benefit from some very wise investments made by their grandparents a couple of generations ago. And they do not drive §300,000 cars, they have been too busy to care about stuff like that while raising 12 kids (not all at the same time) as well as a couple from a sibling who wasn't doing a very good job of it. And now there are grandkids all over the place, some of them grown up as well. They started getting outrageous tax bills when I got carried away with the number of foreign vacation homes I was letting them carry, that's where I had to cut things back so they have a chance of helping set things up for the youngest of the kids as they graduate Uni and get their own households going.

Your 1%-ers would probably look down on them as not being worthy of even belonging to the same country club, but my sims wouldn't care about that either. ;)

It's fun thinking that the town benefits from all that tax income somehow, but afraid that's one of the aspects of town management where the game falls really short on what could have been because as we know the money doesn't really go anywhere. :/

That's local government for ya. City Hall always wants more taxes, so they decided to up your assessment value. :D Darned Sims City Hall. :D Probably wouldn't get that on your comparative market analysis through Sims/Max Realty. :D

I didn't see this mentioned (apologies if it has) but many decorative items can "appreciate" in value. There are some that you would expect to appreciate, like paintings and wines. Then there are some things you wouldn't expect. This for example: https://store.thesims3.com/productDetail.html?productId=OFB-SIM3:69786
I'm not sure if appreciation can cause such a dramatic increase, though.

"igazor;c-16601035" wrote:
Could it be due to vehicles? Cars owned by members of the household tend to be counted as lot assets when they are parked there, but not when they are in use. Sometimes it just depends on when the property valuation takes place. You can check on this more precisely with MC's Status > Household command.

You know what, that may be it. While I was playing another household the sim in question bought a vehicle. It's a CC vehicle worth about 300,000 simoleons! Yikes! But that would explain the jump in value.

"igazor;c-16601086" wrote:
By the way, 16% for property tax seems really high (to me). I have castes set up to designate tax classes based on Net Worth so that the wealthier sims in each world pay higher tax rates than those on the lower end. It's different in each world because costs of living vary so much, but usually the most upper class maxes out at 4 or 5%. But then, I also impose an Income Tax (SP Money) of 5% on the middle classes and 10% on the upper so some of this evens out in the end anyway, provided the sims are actually earning income and not merely trying to live on "Old Money."

I just checked. I have my property taxes set at 12% (still high) and my income taxes at 16% - however, I do this because I have a lower, middle, upper, and "1%" class. The one percent are manly old money and the figures I gave are for that caste only. I do this because I use the familyfunds cheat on families I play to to bulk up their incomes based on their jobs. For example, people high up in the business career, or film stars make millions, etc. I wanted the game to be more realistic.

Other castes have %'s at 1, 2, % 3 percent depending. Upper classes pay around 6 or 7%.

However, the 1 percenters have such large/high value lots that the bills have gotten quite out of my control. The last round of bills for my current household were 232,000! I'll have to scale it back some.