Possibly. I assume this is an item added to your property tax bill. If it is a charge applied to everyone in the community for a general community benefit, then it is a deductible property tax, whether it is a flat fee or a percentage of your property value. However, if it is a charge that is only applied to certain homes for a specific benefit for those homes (like new sewer lines installed in your neighborhood only) then the charge increases your cost basis but is not a deductible property tax.
