Will Mello Roos taxes for property improvements be deductible for 2018? Is it added to property taxes, and will it be limited to the new $10,000 SALT limit?

There is conflicting information on whether Mello-Roos taxes are deductible from federal and state income taxes. In general, only "ad valorem" property taxes (based on the value of the property) are deductible. Mello-Roos taxes are not ad valorem property taxes, but rather are generally flat parcel taxes.

if they are deductible as taxes, they'll be included in the $10,000 limit.