I think you're saying that you want to create an article about the taxation of property in New York State and possibly New York City.

That sounds great. It also looks like there's very little on this topic and that you've identified at least one excellent source.

Just remember, so as not to forget, Wikipedia is not a place for original research.

So let's work to refine the article(s) you want to create.

Here's an interesting article from the Furman Center @ NYU
In January [2016], the New York State Assembly Committee on Real Property Taxation held a public hearing to evaluate New York City’s real property taxation system. Over the years, there have been numerous calls for reform from public officials, advocates, and academics alike, to address inequities within the current four property class system.
Source: http://furmancenter.org/thestoop/entry/policy-minute-new-york-state-property-tax-system
Using this category as a starting point there's a lot to do
https://en.wikipedia.org/wiki/Category:Taxation_in_New_York
New York City Property Taxes, An Unbalanced Burden
http://nyassembly.gov/member_files/073/20150413/index.pdf

S-7000.A Real Property Tax Law in New York State edit

S-7000.A Real Property Tax Law in New York State — Preceding unsigned comment added by Ryozzo (talkcontribs) 15:18, 14 November 2018 (UTC) Ryozzo (talk) 15:21, 14 November 2018 (UTC)Reply

See https://ibo.nyc.ny.us/iboreports/propertytax120506.pdf Does usage of this article require copyright release from the authors? It is a public document.

Ryozzo (talk) 15:25, 14 November 2018 (UTC)Reply