Class O Buildings - Office Buildings
O1 – Office Only – 1 Story
Office Only – 1 Story
The O1 building class comprises fireproof office buildings that are up to 9 stories high. Most of them are in Queens (35%) and Manhattan (34%). The rest of them are spread relatively evenly in the other 3 boroughs.
They are most commonly found in Midtown / Midtown South (Manhattan), Dumbo / Vinegar Hill / Downtown Brooklyn / Boerum Hill (Brooklyn), the Upper East Side / Carnegie Hill (Manhattan), Flushing (Queens) and Battery Park City / Lower Manhattan (Manhattan).

O2 – Office Only 2 – 6 Stories
Office Only 2 – 6 Stories
The O2 building class consists of office buildings that are ten stories high or higher and are not on the main streets. The great majority of them can be found in Manhattan and about a dozen of them in total can be found in Queens, Brooklyn and the Bronx.
The neighborhoods where these buildings are the most numerous are Midtown / Midtown South, Hudson Yards / Chelsea / Flatiron / Union Square, Murray Hill / Kips Bay, Turtle Bay / East Midtown and Gramercy, all of them in Manhattan.

O3 – Office Only 7 – 19 Stories
Office Only 7 – 19 Stories
The O3 building class consists of office buildings that are ten stories high or higher and are on main avenues. Most of them are in Manhattan but there are several of them also in Brooklyn, Queens and the Bronx.
The top 5 neighborhoods where the O3 office buildings can be found in the biggest numbers are Midtown / Midtown South, Battery Park City / Lower Manhattan, Hudson Yards / Chelsea / Flatiron / Union Square, Turtle Bay / East Midtown and Murray Hill / Kips Bay, all in Manhattan.

O4 – Office Only With Or Without Comm – 20 Stories Or More
Office Only With Or Without Comm – 20 Stories Or More
The O4 property class consists of tower-type office buildings that are specific to Manhattan. Most of these buildings are 20 stories high or higher.
They can mostly be found in Midtown / Midtown South, Turtle Bay / East Midtown, Battery Park City / Lower Manhattan, Murray Hill / Kips Bay and SoHo / Tribeca / Civic Central / Little Italy.

O5 – Office With Comm – 1 To 6 Stories
Office With Comm – 1 To 6 Stories
The O5 property class comprises semi-fireproof office buildings which can most frequently be found in Manhattan, Staten Island and Queens.
The neighborhoods where these buildings are most numerous are New Dorp / Midland Beach (Staten Island), Midtown / Midtown South (Manhattan), Hudson Yards / Chelsea / Flatiron / Union Square (Manhattan), SoHo / Tribeca / Civic Central / Little Italy (Manhattan), Jamaica (Queens) and South Beach / Old Town / Dongan Hills (Staten Island).

O6 – Office With Comm 7 – 19 Stories
Office With Comm 7 – 19 Stories
Buildings in the O6 class are bank buildings that are designed exclusively for banking.
They are most frequently found in Queens and Brooklyn, in the following neighborhoods: Bay Ridge (Brooklyn), Bensonhurst West (Brooklyn), Jamaica (Queens), Borough Park (Brooklyn), Upper East Side / Carnegie Hill (Manhattan) and South Ozone Park (Queens).
O7 – Professional Buildings/Stand Alone Funeral Homes
Professional Buildings/Stand Alone Funeral Homes
The O7 building class consists of office buildings for various professionals. They are most numerous in Brooklyn (37%), Staten Island (24%) and Queens (22%).
The neighborhoods with the biggest numbers of buildings in the O7 class are: Sheepshead Bay / Gerritsen Beach / Manhattan Beach (Brooklyn), Westerleigh (Staten Island), South Beach / Old Town / Dongan Hills (Staten Island), Bay Ridge (Brooklyn), Great Kills (Staten Island) and Homecrest (Brooklyn).

O8 – Office With Apartments Only (No Comm)
Office With Apartments Only (No Comm)
The O8 building class consists of office buildings with residential apartments. Most of these buildings can be found in Brooklyn (34%), Queens (31%) and Staten Island (20%).
The neighborhoods with the biggest numbers of these buildings are Bay Ridge (Brooklyn), Westerleigh (Staten Island), Flatlands (Brooklyn), Madison (Manhattan) and Brighton Beach (Brooklyn).

O9 – Miscellaneous And Old Style Bank Bldgs.
Miscellaneous And Old Style Bank Bldgs.
The O9 building class consists of miscellaneous office buildings most commonly found in Manhattan (32%), Queens (28%) and Brooklyn (25%).
The neighborhoods where they are the most numerous are SoHo / Tribeca / Civic Central / Little Italy (Manhattan), Midtown / Midtown South (Manhattan), Hudson Yards / Chelsea / Flatiron / Union Square (Manhattan), Hunters Point / Sunnyside / West Maspeth (Queens) and Borough Park (Brooklyn).
