Well, the assessment in NYC, unlike other places is actually pretty predictable and transparent, but not simple.
If you are Class 1, it is 6% of FMV If you are Class 2+ it is 45% of FMV
https://www1.nyc.gov/site/finance/taxes/definitions-of-prope...
If you are Class 1, it is 6% of FMV If you are Class 2+ it is 45% of FMV
https://www1.nyc.gov/site/finance/taxes/definitions-of-prope...
And that's before taking abatements into account. The system overall is not very transparent.