jump in value within a year... almost double the previous year? Does that effect the property taxes you pay each year (built into your mortgage payment)?
Has anyone ever appealed and won? If so, how did you fight it?
**Asking for a friend**
Looks like you are getting your answers.
If your property tax is (as suggested above) pegged to property value, and
if property value is derived (if only in part) from market value, and
if market value is derived (if only in part) from measures such as market sales comparison, then an increase in the market value of your property will at some point result in an increase tax liability (assuming no material change in mill rate). Sometimes municipalities adjust for such changes quickly; sometimes they don't. Can you appeal? Probably. Will you win your appeal? Not if you cannot present evidence supporting the property value you have in mind. How do you appeal? That is exceedingly rule driven. You need to read the applicable statutes and codes, then follow the procedures to the letter. This includes making a timely appeal. I would think that there are fairly descriptive guides available in your area.
If your
assessed property value has, in fact, almost doubled in a year then congratulations! Presumably, your equity has also increased significantly (though not necessarily within the year; sometimes it takes a municipality years to get around to re-assessing property values for purposes of determining tax liability). But it would appear that comes with a cost in the form of increased tax liability.
Make sure you inquire as to the amount of your mortgagee's monthly escrowed property tax as you may experience a shortfall in your escrowed property tax by year's end.
Also, in light of the changed assessed value you should make certain your property insurance coverages reflect the replacement cost value and the actual cash value of your residential structures. You do not want to be over-insured or under-insured.