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340 21 Street, Brooklyn

BIN 3017569BBL 3008980032Block 898 · Lot 32Built 19314 storiesGoogle Maps & Street View ↗Tax & zoning on NYC.gov ↗
$300.00 recorded as due
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OverviewHealth scoreTimelineFinesOwnership historyFinancingOwnerRelated

340 21 Street at a glance

340 21 Street, Brooklyn has 34 open city records on file, none of them Class C, and $300.00 recorded as due on OATH/ECB summonses. No marshal evictions are on record for this building. Its last recorded ownership transfer was Dec 2, 1996 (no consideration recorded). The most recent record is dated May 1, 2026.

Open Class C
0
Immediately hazardous — click to see them
Open Class B
31
Hazardous — click to see them
Open Class A
3
Non-hazardous — click to see them
Fines due
$300.00
Balance on OATH/ECB summonses
Open per unit
4.50
8 residential units · NYC average 0.31
Evictions
0
No marshal evictions on record
Permits on file
0
Construction permits filed with DOB
Last activity
May 1, 2026
HPD record

Health score for 340 21 Street

A composite of the public indicators below. How it is scored.

B
Health score · Sep 11, 2026
Scored from all 122 public records for this building
Scored from city records as published, which lag reality by a day or two, and closed violations rest on owner self-certification. A grade summarizes the public record, not the building itself. Full methodology · report a problem
Open Class C violations
Immediately hazardous, uncertified
This building 0
Open Class B violations
Hazardous
This building 31
Heat & hot water records
Violations and complaints, last 24 months
This building 0
Unpaid penalties
OATH/ECB summonses with balance due
This building $300
Bedbug filings with infestations
Annual LL69 filings on record
This building 0
Tenant litigation
Open HP actions in Housing Court
This building 0
Active vacate order
HPD or FDNY order to vacate, still in effect
This building No

Record timeline for 340 21 Street

122 records on file, every agency interleaved. Class A, B and C are HPD’s hazard tiers: C is immediately hazardous, A and B explained here.

Download this timeline (CSV) →

OATH / ECB summonses & fines at 340 21 Street

$300.00 is recorded as due across the 6 summonses below, out of $1,100.00 in penalties imposed. Balances are as the city publishes them; a settlement or write-off that never reached the dataset will not show here. New to these? How an OATH summons becomes a penalty, explained.

OATH and ECB summonses for 340 21 Street
040604101PAug 16, 2018FAILURE TO CLEAN 18 INCHES INTO STREETSep 18, 2018Defaulted (did not respond)$300.00
041856927ZOct 30, 2014DIRTY AREADec 2, 2014Found in violation
0132538946Mar 5, 2003FAILURE TO PROPERLY PUT RECYCLABLES OUT FOR COLLECTIONApr 9, 2003Found in violation
0128837610May 16, 2002MAINTAINING RECEPTACLESJul 19, 2002Written off
0128837620May 16, 2002DIRTY SIDEWALKJul 19, 2002Written off
0110000193Apr 21, 1999FAILURE TO POST NOTICES INFORM ABOUT RECYCLINGOct 6, 1999Written off

Ownership history for 340 21 Street

Every deed the City Register has recorded against this building’s tax lot (BBL 3008980032), newest first. A price is the consideration stated on the deed; transfers between related parties, into an LLC, or by a referee often record none, shown as “—”. Each row links to the document in ACRIS.

Recorded deeds for 340 21 Street
Dec 2, 1996Feb 5, 1997340 Realty LLCOlynik, TheresaDeedView ↗
Apr 13, 1993Apr 23, 1993Olynik, TheresaSweethouse Enterprises IDeedView ↗
Jan 6, 1982Jan 25, 1982Sweethouse Enter INC.Penny, Jenny Niedbalski, Niedbalski, RaymondDeedView ↗
Jan 21, 1975Jan 21, 1975Niedbalski Raymond, Penny Jenny NNiedbalsk Anna Decd, Penny Jenny N, Niedbalski Raymond Indiv & Sole ExecDeedView ↗
Nov 8, 1974Nov 8, 1974Niedbalski Anna, Niedbalski Raymond, Niedbalski Raymond Sole Surviving Exec OfZachorowski Dorothy, Zachorowski Theresa, Zachorowski Florence Decd, Zachorowski Ignatius, Boyle Frances Indiv & Admin OfDeedView ↗

Financing record for 340 21 Street

Mortgages recorded against this building’s tax lot, with the satisfactions that paid them off and the assignments that moved them between lenders, from the City Register (ACRIS). A satisfaction usually records no amount, shown as “—”.

Recorded financing documents for 340 21 Street
Jan 17, 2006Satisfaction of mortgageGreenpoint Mortgage CORPView ↗
Mortgage$200,000Greenpoint MortgagecorpView ↗
Mortgage assignmentGreenpoint MortgagecorpView ↗
Satisfaction of mortgageTheresa OlynikView ↗
Satisfaction of mortgageNiedbalski, Raymond, Penny, Jenney NiedbalskiView ↗
Mortgage$200,000Olynik, TheresaView ↗
Mortgage$25,000Penny, Jenny Niedbalski, Niedbalski, RaymondView ↗

Lender names are as recorded; the current holder of a loan can differ if a later assignment was never recorded.