Wandering a bit off topic, but...
Best to pay by Dec 31 if you want the write-off on that year's taxes.
I have two friends that have paid off their houses and (due to their own situations) find that they essentially can itemize the same or less than the standard deduction. To save a few bucks, they pay their taxes twice in one year (every other year)...they pay after the 1st of the year for the previous year, and then again before the end of the year for the current year. That allows them to deduct property taxes twice in one year and to itemize more than the standard deduction. The year that they do not 'pay' taxes, they can just claim the standard deduction.