There is a tax advisory commission see https://www1.nyc.gov/site/propertytaxreform/index.page

To prepare for it, you will want to compare property tax across properties try https://tax.tidalforce.org

If you login you can search by name and search to New York City payroll and share the links with your friends. You can also search nearby and condos.

It lets you easily compare property tax bills across the years and across properties.

Abatement and exemption details are also available in a paid report section the most of the app is free.

There's even a Tax Class Change Report that shows what happens in a zip code when you change your tax class