BuildingCensus

770 FLATBUSH AVENUE

Office building · Brooklyn · 11226

At a glance

770 FLATBUSH AVENUE in Brooklyn, NY is listed on the New York City property roll as “Office building”, BBL 3050630049. The roll records 3,404 sq ft of building area, 1 floors, a 1925 build year and an assessed value of $369,000.

Active records here
0
business-tax + registry entities
Building area
3,404
sq ft (county roll)
Floors
1
county roll
Year built
1925
vintage
Assessed value
$369K
current roll
Assessed / sq ft
$108
assessed value per sq ft
Last sold
—
no transfer on record
Sale / sq ft
—
not derivable from the record

New York City assessment roll

Parcel record

FieldValue
BBL3050630049
Site address770 FLATBUSH AVENUE
Land use (DOR)O7 — Office building
Building area (actual)3,404 sq ft
Floors / units / buildings1 / 1 / 1
Lot size3,405 sq ft
Year built1925
Zoning (primary)—
Land value$76,500
Building value—
Total assessed value$369,000

Recorded owner (assessment roll)

770 FLATBUSH REALTY LLC

Owner mailing address: not listed

Verify on the city's lot record →

Location

Address
770 FLATBUSH AVENUE
City
Brooklyn
ZIP
11226
Coordinates
40.65401, -73.95994

Within ~650 m

Nearby office buildings

How does 770 FLATBUSH AVENUE compare with other New York office buildings?

At 3,404 sq ft, 770 FLATBUSH AVENUE is less than a tenth the size of the average office building on the New York City roll, which comes to 67,377 sq ft across 7,166 buildings.

Its assessed value works out to $108 per square foot of building area, against $157 across all office floor area on the roll.

What does “Office building” mean for this parcel?

The New York City roll classifies BBL 3050630049 as “Office building” (use code O7). BuildingCensus includes a parcel in its office census when the roll gives it an office-class use, so the label is the county's, not an inference.

Frequently asked questions

Who owns 770 FLATBUSH AVENUE?

The recorded owner on the New York City assessment roll (current) is 770 FLATBUSH REALTY LLC.

How big is 770 FLATBUSH AVENUE?

The New York City roll records 3,404 sq ft of building area, 1 floors, a build year of 1925. It sits on a 3,405 sq ft lot.

What is the assessed value of 770 FLATBUSH AVENUE?

$369,000 on the New York City roll. Assessed values are taxable-roll figures, not market prices.

What is the BBL for 770 FLATBUSH AVENUE?

BBL 3050630049, site address 770 FLATBUSH AVENUE, Brooklyn. It is the key to look the parcel up in the Department of City Planning PLUTO extract and Department of Finance rolling sales (New York City).

More around 770 FLATBUSH AVENUE

Everything here comes from public records, and public records go stale. If you know better, say so.

Data provenance — public records only

  • New York City — Department of City Planning PLUTO extract and Department of Finance rolling sales. The city publishes no owner mailing address, so landlord portfolios cannot be grouped here, and its business licences cover regulated trades rather than office tenants.

Every fact on this page is drawn from the government records above — no listing sites, no scraped platforms, no third-party images. Facts from public records are uncopyrightable; each tenancy row carries its source and match confidence. Records can lag reality — a business-tax receipt or registration at an address is evidence of occupancy, not a lease confirmation.

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Dataset updated . Source: New York City assessment roll, BBL 3050630049.

About this data

Source: Department of City Planning PLUTO extract and Department of Finance rolling sales (New York City), as published September 11, 2026. See the methodology for how records are matched, cleaned and scored.

Cite as: BuildingCensus, “770 FLATBUSH AVENUE, Brooklyn, NY (BBL 3050630049)”, https://buildingcensus.com/offices/nyc/office-building-81019f2c (data as of September 11, 2026).