I have relocated, yet I still received a tax assessment of property tax (OZB) on my old property, is this correct?

The tax assessment on property tax (OZB) is based on the situation on 1 January

Did you sell your property after January 1st? Or did you move after that date? Then you will still receive a tax assessment on property tax for your old property. You have to pay this tax in full. However, the notary will often settle part of these taxes with the new owner.