What’s the current price of a house purchased before right now?
They’re usually based on sales price and then also “reassessed” every couple / few years by the PVA (property value administrator) which now usually means using some sort of algorithm based on recent sales and whatever else. Then you’re given a chance to appeal the value with evidence showing why it doesn’t fit your specific situation before the tax payment is due. At least this is how it works in my area.
At an old job I was responsible for blending custom alcoholic drinks before we sent it to bottling. One required stevia which when you opened the bag it came in would float into the air everywhere (it’s a super fine powder) and being young and stupid we didn’t wear any masks or anything. For the next couple days you’d have a constant taste of it in your mouth / nose that reminded me of sweetarts candy.