348 HUMBOLDT STREET
Office building · Brooklyn · 11211
At a glance
348 HUMBOLDT STREET in Brooklyn, NY is listed on the New York City property roll as “Office building”, BBL 3027660001. The roll records 4,416 sq ft of building area, 2 floors, a 1987 build year and an assessed value of $358,650.
New York City assessment roll
Parcel record
| Field | Value |
|---|---|
| BBL | 3027660001 |
| Site address | 348 HUMBOLDT STREET |
| Land use (DOR) | O2 — Office building |
| Building area (actual) | 4,416 sq ft |
| Floors / units / buildings | 2 / 2 / 1 |
| Lot size | 2,168 sq ft |
| Year built | 1987 |
| Zoning (primary) | — |
| Land value | $29,250 |
| Building value | — |
| Total assessed value | $358,650 |
Recorded owner (assessment roll)
MADELINE REALTY LLC
Owner mailing address: not listed
Location
- Address
- 348 HUMBOLDT STREET
- City
- Brooklyn
- ZIP
- 11211
- Coordinates
- 40.71413, -73.94243
Within ~650 m
Nearby office buildings
- 78 KINGSLAND AVENUE0 tenants
22,948 sq ft · 3 fl · 1940
- 262 GRAHAM AVENUE0 tenants
15,260 sq ft · 4 fl · 1928
- 101 RICHARDSON STREET0 tenants
14,700 sq ft · 2 fl · 1880
- 819 GRAND STREET0 tenants
13,357 sq ft · 3 fl · 1924
- 308 GRAHAM AVENUE0 tenants
12,780 sq ft · 3 fl · 1930
- 2 BUSHWICK AVENUE0 tenants
12,339 sq ft · 3 fl · 2024
How does 348 HUMBOLDT STREET compare with other New York office buildings?
At 4,416 sq ft, 348 HUMBOLDT STREET 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 $81 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 3027660001 as “Office building” (use code O2). 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 348 HUMBOLDT STREET?
The recorded owner on the New York City assessment roll (current) is MADELINE REALTY LLC.
How big is 348 HUMBOLDT STREET?
The New York City roll records 4,416 sq ft of building area, 2 floors, a build year of 1987. It sits on a 2,168 sq ft lot.
What is the assessed value of 348 HUMBOLDT STREET?
$358,650 on the New York City roll. Assessed values are taxable-roll figures, not market prices.
What is the BBL for 348 HUMBOLDT STREET?
BBL 3027660001, site address 348 HUMBOLDT STREET, 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 348 HUMBOLDT STREET
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 3027660001.
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, “348 HUMBOLDT STREET, Brooklyn, NY (BBL 3027660001)”, https://buildingcensus.com/offices/nyc/office-building-298204fd (data as of September 11, 2026).