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638 Humboldt Street, Brooklyn

Brooklyn • Block 02686 • Lot 0059 • Zip: 11222

Condition

What the city currently has open against this building, counted from its own records.

Address

Primary address: 638 Humboldt Street, Brooklyn
Borough: Brooklyn
Zip code: 11222
Block: 02686
Lot: 0059
BBL: 3026860059
Unified address ID: 3026860059

Land use and zoning

Land use: Multi-Family Walk-Up Buildings
Zoning: R6B (Residential)
Lot type: Inside
Lot area: 2,450 sq ft
Lot dimensions: 24 ft x 100 ft
Built FAR: 1.71
Max residential FAR: 2
Max facility FAR: 2
School district: 14

Building

Building class: Walk-up Apartments - Five to Six Families (C2)
Year built: 1931
Last altered: 1931
Floors: 3
Total units: 6
Residential units: 6
Building area: 4,190 sq ft
Building dimensions: 24 ft x 57 ft
Basement: Below grade full basement
Owner: 638 HUMBOLDT STREET LLC

Latest assessment

Assessment year: 2018/19
Tax class: 4, 5, or 6 Units
Market value: $1,126,000
Total assessment: $91,464
Land assessment: $1,056
Exempt total: $0
Assessment owner: KOSTRZEWSKI REVOCABLE

Neighborhood

The area this lot falls inside, and the commute Hoodkit measures from it.

Neighborhood Greenpoint
District Brooklyn

Getting around

Estimated about 10 hours ago
Nearest station

About 8 minutes on foot · 552 m

  • Union Square 30 min 8 walking, 22 riding
  • Grand Central 31 min 8 walking, 23 riding
  • Times Square 34 min 8 walking, 26 riding
  • Downtown Brooklyn 34 min 8 walking, 26 riding
  • Penn Station 39 min 8 walking, 31 riding
  • Fulton Street 39 min 8 walking, 31 riding

Around this address

Transit and places within 0.5 miles of the lot.

Places nearby

Hoodkit's own ranking, not the closest first

Activity

Sales, filings, permits and violations from every dataset, in one order.

2026

  1. HPD violation May 5, 2026

    Class A

    (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION ...

  2. HPD violation Apr 24, 2026

    Class C

    § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CL...

  3. Sale Feb 5, 2026 $560,000

    Changed hands

    638 HUMBOLDT STREET

2025

  1. HPD violation Dec 29, 2025

    Class C

    § 27-2005, 2007 ADM CODE REMOVE DEVICE PREVENTING DOOR FROM BEING SELF-CLOSING HOOK AND EYE INSTALLED AT BUILDING ENT...

  2. HPD violation Dec 22, 2025

    Class B

    § 27-2045(B)(1)(A) HMC, § 12-01, § 12-03 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL SMOKE DETECTING ...

  3. DOB violation Nov 14, 2025

    LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED

    VIOLATION ISSUED-FAILURE TO FILE 2024 EXTERNAL LOW PRESSURE INSPECTION

2023

  1. HPD violation Mar 23, 2023

    Class A

    (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION ...

2022

  1. HPD violation Nov 10, 2022

    Class I

    §27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27...

2009

  1. DOB violation Dec 31, 2009

    LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED

The most recent 6 events from each dataset, so no one source takes the axis. Each tab holds the full record.

Property Contacts

Contact information aggregated from multiple government sources

1

Registration Contracts

Contact information from multiple dwelling registrations

CorporateOwner
KOSTRZEWSKI REVOCABLE TRUST
638 HUMBOLDT STREET
Brooklyn, NY, 11222
Agent
SYLVIA DRUZYNSKI
638 HUMBOLDT STREET 2R
BROOKLYN, NY, 11222
HeadOfficer
SYLVIA DRUZYNSKI
317 N. KNOLL BLVD
WAULWATOSA, WI, 53222
SiteManager
SYLVIA DRUZYNSKI
4

Deed Records

Parties from ACRIS deed and mortgage records

GRANTEE/BUYER
638 HUMBOLDT STREET
BROOKLYN, NY, 11222
GRANTOR/SELLER
638 HUMBOLDT STREET
BROOKLYN, NY, 11222
GRANTOR/SELLER
638 HUMBOLDT STREET
BROOKLYN, NY, 11222
GRANTEE/BUYER
638 HUMBOLDT STREET
BROOKLYN, NY
5

Property Records

Owner information from assessment and PLUTO records

Assessment Owner
PLUTO Owner