321 21st St, Brooklyn, NY 11215 Property Records

New York City property record for 321 21st St, Brooklyn, NY 11215

Property Summary

Property Type	Duplex
Details	1,564 sqft · built 1905
Lot Size	0.037 acres (1,603 sqft)
Owner	Company Name on File
Last Sale	$1,750,000 (Feb 2026)
Tax Bill	$6,422 (2025)
Deeds & Mortgages	Feb 2026 Sale & Mortgage Feb 2026 Sale
APN	`00892-0070`

Property Details

APN / Parcel Number

Primary APN	`00892-0070`
Alternative APNs	`0309008920070` `3-00892-0070`

Interior

Units	2 Units
Stories	2 Stories
Building Area	1,564 sqft Living Area
1st Floor Area	969 sqft

Exterior

Year Built	Built 1905
Effective Year Built	Effective 1905
Architectural Style	Duplex Single
Lot Area	1,603 sqft (0.037 acres)
Lot Dimensions	100 ft deep x 16 ft wide

Location & Zoning

Account Number	3-00892-0070
Street Address	321 21ST ST
City	BROOKLYN
State	NY
Zip	11215-6405
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	R6B
Legal Block	892
Legal Lot Number	70
Jurisdiction	KINGS (BROOKLYN) NY
Township / Civil Division	BROOKLYN
Census Block Group	2
Census Block	2000
Census Tract	14700

Owner

321 21st St, a duplex, is owned by a company that bought it in February 2026.

Source: New York City records, as of July 14, 2026

Owner of Record	Company Name on File
Mailing Address	3210 57TH ST, WOODSIDE, NY 11377-1919
Owner Type	Company
Vesting	Company

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Feb 5, 2026	Deed, Transfer S3 SB REAL ESTATE CREDIT II TRUST
Feb 5, 2026	Deed, Transfer

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Feb 5, 2026 · Amount on File
Deed Sale	Feb 5, 2026 · Amount on File
Prior Sale	Dec 4, 2015 · Amount on File
Prior Transfer Date	Aug 29, 2024
Prior Transfer Doc	0000081269
Record Updated	Oct 29, 2026

February 2026: Deed, Transfer

Document Type	Deed
Jurisdiction	KINGS (BROOKLYN) NY
Recording Date	Feb 5, 2026
Property Address	321 21ST ST, BROOKLYN, NY 11215-6405
Document Number	0000036184
Instrument Date	Jan 16, 2026
Instrument	2026000036184
Transaction Type	Transfer
Record Updated	Feb 17, 2026

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Notice of Foreclosure Sale Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name
Address	300 CADMAN PLZ W, BROOKLYN, NY 11201-3229

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	85 CEDAR DR, GREAT NECK, NY 11021-2804

Mortgage

Document Number	0000036186
Date	Feb 5, 2026
Instrument	2026000036186

Lender

Name	S3 SB REAL ESTATE CREDIT II TRUST

Agreement

Amount	Amount on Record

February 2026: Deed, Transfer

Document Type	Deed
Jurisdiction	KINGS (BROOKLYN) NY
Recording Date	Feb 5, 2026
Property Address	321 21ST ST, BROOKLYN, NY 11215-6405
Document Number	0000036185
Instrument Date	Jan 16, 2026
Instrument	2026000036185
Transaction Type	Transfer
Record Updated	Feb 17, 2026

Transaction

Tax	$0.00
Additional	Notice of Foreclosure Sale Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name
Address	16 MIDDLE NECK RD, GREAT NECK, NY 11021-2357

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3210 57TH ST, WOODSIDE, NY 11377-1919

Tax Assessment & Valuation

The 2025 property tax bill for 321 21st St was $6,422.

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		$76,920 (+140.56%) Land $16,500 Building $60,420	$1,282,000 (-12.91%) Land $275,000 Building $1,007,000
2025	$6,422.00	$31,976 Land $5,974 Building $26,002	$1,472,000 Land $275,000 Building $1,197,000
2023	$6,156.00	$86,040 Land $16,500 Building $69,540	$1,434,000 Land $275,000 Building $1,159,000

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

FEMA has no flood map on file for 321 21st St; there have been 11 flood claims nearby since 1979.

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	39 units insured incl. 32 condo units
Nearby Flood Claims	11 (1979–2026)
Claims Outside the SFHA	4 of 11
Most Recent Claim	Aug 2026 · other causes

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

The area around 321 21st St has no burnable land within ember reach, so its wildfire risk is not rated.

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 1,605 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
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
T-Mobile Fixed Wireless	100 / 20

May also be available: Optimum, Starry.

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