Question 1

How many properties does NYC's FY2027 assessment roll cover?

Accepted Answer

1,167,962 tax lots make up the NYC Department of Finance's FY2027 property assessment roll, covering all five boroughs and Tax Classes 1 through 4. Together they carry a total market value of $1.91 trillion, a total assessed value of $536.1 billion, and a total taxable value of $465.3 billion after exemptions.

Question 2

What is the total market value of property in New York City?

Accepted Answer

$1.91 trillion is the total market value across NYC's 1,167,962 assessed tax lots in the FY2027 DOF roll. Manhattan alone accounts for $654.9 billion of that across 179,175 lots — an average market value of $3.66 million per lot, by far the highest of the five boroughs.

Question 3

How concentrated is NYC property value among the biggest owners?

Accepted Answer

2,821 tax lots — just 0.24% of the city's 1.17 million properties, each valued at $50 million or more — account for $448.9 billion, or 23.5% of NYC's entire $1.91 trillion property value. The explorer includes 500 consolidated owner-entity profiles (LLCs, corporate landlords, government agencies, institutions) built to reveal that concentration.

Question 4

How many rent-stabilized buildings are in NYC?

Accepted Answer

47,277 of 47,278 buildings (99.998%) in NYS HCR's 2024 rent-stabilization registry were successfully matched by BBL to the FY2027 DOF assessment roll. This lets the explorer cross-reference any property's assessed value against whether its building is under rent regulation, block by block.

Question 5

How does NYC's property tax class system work?

Accepted Answer

4 tax classes govern NYC property assessment. Tax Class 1 (661,673 one-to-three-family homes) is assessed at just 6% of market value; Tax Classes 2 and 4 (apartment buildings, commercial, and most other property) are assessed at 45%. That gap is why a $1M condo building and a $1M house can carry very different tax bills — explained property-by-property in the explorer's Tax Classes guide.