525 E 21st St, #42, Brooklyn, NY 11226 Property Records

New York City property record for 525 E 21st St, #42, Brooklyn, NY 11226

Property Summary

Property Type	Cooperative Housing Block
Details	51,611 sqft · built 1910
Lot Size	0.332 acres (14,464 sqft)
Owner	2 Company Names on Record
Last Sale	$461,000 (Jul 1994)
Tax Bill	$121,725 (2025)
Deeds & Mortgages	May 2022 Mortgage Jun 2017 Mortgage + 1 more
APN	`05185-0073`

Property Details

APN / Parcel Number

Primary APN	`05185-0073`
Alternative APNs	`1604051850073` `3-05185-0073`

Interior

Units	84 Units
Stories	6 Stories
Building Area	51,611 sqft Living Area
1st Floor Area	8,787 sqft

Exterior

Year Built	Built 1910
Effective Year Built	Effective 1910
Lot Area	14,464 sqft (0.332 acres)
Lot Dimensions	100 ft deep x 101 ft wide

Location & Zoning

Account Number	3-05185-0073
Street Address	525 E 21ST ST, 42
City	BROOKLYN
State	NY
Zip	11226-6899
Property Category	Residential
Property Type	Residential > Cooperative > Cooperative Housing Block
Local Zoning Code	R7A
Legal Block	5185
Legal Lot Number	73
Jurisdiction	KINGS (BROOKLYN) NY
Township / Civil Division	BROOKLYN
Census Block Group	2
Census Block	2001
Census Tract	51602

Owner

Source: New York City records, as of May 4, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Company Names on Record
Mailing Address	4711 12TH AVE, A8, BROOKLYN, NY 11219-2529
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Date	Document
May 24, 2022	Deed of Trust, Mortgage NEW YORK COMMUNITY BANK
Jun 30, 2017	Grant Deed, Mortgage NEW YORK CMNTY BK
Jun 30, 2017	Loan Modification, Consolidation and Extension, Mortgage NEW YORK CMNTY BK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 21, 1994 · Amount on Record
Deed Sale	Jul 21, 1994 · Amount on Record
Deed Book / Page	3340 / 124
Record Updated	Jun 8, 2026

May 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	KINGS (BROOKLYN) NY
Property Address	525 E 21ST ST # 42, 42, BROOKLYN, NY 11226-6899
Transaction Type	Mortgage
Record Updated	May 31, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000210907
Date	May 24, 2022
Instrument	2022000210907

Lender

Name	NEW YORK COMMUNITY BANK
Address	102 DUFFY AVE, HICKSVILLE, NY 11801

Agreement

Amount	Amount Recorded

June 2017: Grant Deed, Mortgage

Document Type	Grant Deed
Jurisdiction	KINGS (BROOKLYN) NY
Recording Date	Jun 30, 2017
Property Address	525 E 21ST ST # 42, 42, BROOKLYN, NY 11226-6899
Instrument Date	Jun 21, 2017
Instrument	242924
Transaction Type	Mortgage
Record Updated	Jul 7, 2017
Title Company	RIVERSIDE ABSTRACT INC

Transaction

Tax	$0.00
Additional	Multiple Parcels

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	4711 12TH AVE #A8 BROOKLYN NY 112192529, A8, BROOKLYN, NY 11219-2529

Mortgage

Document Number	0000242924
Date	Jun 30, 2017
Instrument	242924

Lender

Name	NEW YORK CMNTY BK
Type	Bank
Address	102 DUFFY AVE # 3RD, HICKSVILLE, NY 11801-3630

Agreement

Amount	Amount Recorded

June 2017: Loan Modification, Consolidation and Extension, Mortgage

Document Type	Loan Modification, Consolidation and Extension
Jurisdiction	KINGS (BROOKLYN) NY
Recording Date	Jun 30, 2017
Property Address	525 E 21ST ST # 42, 42, BROOKLYN, NY 11226-6899
Instrument Date	Jun 21, 2017
Instrument	242925
Transaction Type	Mortgage
Record Updated	Jan 14, 2020
Title Company	RIVERSIDE ABSTRACT INC

Transaction

Tax	$0.00
Additional	Multiple Parcels

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	4711 12TH AVE #A8 BROOKLYN NY 112192529, A8, BROOKLYN, NY 11219-2529

Mortgage

Document Number	0000242925
Date	Jun 30, 2017
Instrument	242925

Lender

Name	NEW YORK CMNTY BK
Type	Bank
Address	102 DUFFY AVE # 3RD, HICKSVILLE, NY 11801-3630

Agreement

Amount	Amount Recorded

Tax Assessment & Valuation

Source: New York City assessment roll, as of May 4, 2026

Property Jurisdictions

Type	Name
State	New York
County	Kings County
Municipality	New York City
Unified School District	New York City Department Of Education (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$972,450 (+2.95%) Land $292,950 Building $679,500	$2,161,000 (+2.95%) Land $651,000 Building $1,510,000
2025	$121,725.00 (+3.08%)
2023	$118,087.00	$944,550 Land $292,950 Building $651,600	$2,099,000 Land $651,000 Building $1,448,000

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Not on file
Nearby Flood Policies	1 in force
Nearby Flood Claims	1 (2021)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Sep 2021 · Remnants Of Hurricane Ida

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	NEW YORK CITY SYSTEM serves 8,271,000 people · EPA ID NY7003493
Water Source	Surface water
Last State Inspection	Dec 2025
Lead	10 ppb (2024) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	Uncovered finished water reservoir currently in violation since Feb 2017
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 1,287 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Verizon Fiber · Fixed Wireless in parts of the area	2,300 / 2,300
Optimum Cable · Fiber in parts of the area	940 / 35
T-Mobile Fixed Wireless	100 / 20

May also be available: Starry.

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