Why would it not be a big motivator? don't know about LA, but in SF tax is just shy of 1.2%, if you have a mortgage at 3.5%, and you've held your property for a

Why would it not be a big motivator? don't know about LA, but in SF tax is just shy of 1.2%, if you have a mortgage at 3.5%, and you've held your property for a long time, you can easily see your property tax triple and your cost of living go up ~10-20% in aggregate just by being assessed at the current market level in a new home (with the same value) on the other side of town... And that's every year, not just once on the sale. It seems pretty clear to me that 10% or 20% makes a big difference. Plenty of people will move across town to pay $2,400 a month instead of $3,000, why would home-owners be fundamentally different.