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23-21 30th Avenue, Queens, NY 11102

BBL 4005480010 (Borough 4, Block 548, Lot 10) · BIN 4006263 · Last updated:

Summary · as of November 6, 2026

23-21 30th Avenue (Queens, NY 11102; tax lot BBL 4005480010) is a 2-unit mixed-use building with apartments and ground-floor commercial space (building class S2: mixed-use: two-family home with one store or office), built around 1920, on a 1,700 sq ft lot zoned R6A. City tax records list the owner as SGTP LLC. The Department of Finance's final market value for tax year 2027 is $2,339,000. As of November 6, 2026, NYC Open Data shows no open DOB jobs, active DOB/ECB violations, open HPD violations or unpaid OATH tickets for this lot. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.)

Owner of record
SGTP LLC
Building class
S2 · Mixed-use: two-family home with one store or office
Year built · units
1920 · 2 res.
Lot area · zoning
1,700 sq ft · R6A
Market value (DOF)
$2,339,000 FY2027
Last priced deed
—
BBL
4005480010
BIN
4006263

How to cite: NYC Property Facts, “23-21 30th Avenue, Queens, NY 11102 (BBL 4005480010)”, data as of 2026-11-06, https://nycpropertyfacts.com/ny/queens/23-21-30th-avenue-4005480010. Source: NYC Open Data.

Lot & building

Basic facts about the tax lot and building from the city’s PLUTO database.

Owner (as listed by the city)
SGTP LLCThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
Building class
S2 – Mixed-use: two-family home with one store or officeThe Department of Finance’s category for what kind of building this is.
Land use
Mixed residential & commercialCity Planning’s broad category of how the lot is used.
Year built
1920Often an estimate for older buildings.
Floors
3
Units
2 residential / 3 totalResidential units are apartments; total includes stores and offices.
Buildings on lot
1
Lot size
1,700 sq ft (17 ft × 100 ft)
Building floor area
3,520 sq ft (incl. 1,760 sq ft commercial)
Zoning
R6AThe zoning district sets what can be built and used here. Residential district.
Built vs. allowed density (FAR)
2.07 built / 3.00 max residentialFloor Area Ratio = building floor area ÷ lot area. If built FAR is below the maximum, zoning may allow more floor area (other rules apply).
Identifiers
BBL 4005480010 (Borough 4, Block 548, Lot 10) · BIN 4006263BBL identifies the tax lot; BIN identifies each building (from DOB/HPD/footprint records).

Source: PLUTO (Dept. of City Planning) — city dataset updated 2026-08-24; data as of 2026-11-06; Building Footprints — city dataset updated 2026-10-25; data as of 2026-11-01

Tax assessment

How the Department of Finance values this lot for property tax.

Market value (tax year 2027, final roll)
$2,339,000The Department of Finance’s estimate of value for tax purposes. It is not an appraisal and is often far from the sale price.
Assessed value
$140,340The portion of market value that taxes are calculated on (capped by law for small homes).
Taxable value (final)
$49,663Assessed value minus any exemptions.
Tax class
Tax class 1 – 1–3 family homes (and some small mixed-use / vacant lots)
Tax yearRollMarket valueAssessed valueTax class
2027Final$2,339,000$140,3401
2026Final$2,250,000$135,0001
2025Final$2,033,000$121,9801

Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-11-06

Sales & deed history 4

Deeds recorded with the City Register (ACRIS). A deed transfers ownership. A $0 or very low price usually means a transfer between related parties, an estate, or a refinance-related transfer, not a market sale. This is not a title search; mortgages, liens and other documents are not shown.

DateTypePriceSeller (grantor)Buyer (grantee)Doc ID
2010-12-08DEED$0 / not statedKalemkeridis, SofiaSgtp Llc2010122200778001
1981-06-15DEED$0 / not statedMarkett Joseph; Scaglione SalvatoreGeorge Kalemkeridis; Sofia KalemkeridisBK_8140134500172
1979-09-14DEED$0 / not statedMessina Carmelo; Messina CarmelaSalvatore Scaglione; Joseph MarketBK_7940119600623
1970-10-06DEED$0 / not statedVella Grace; Vella AlfonsoCarmelo Messiana; Carmela MessianaBK_7040043100206

Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-11-06; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-11-06; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-11-06

DOB job filings 0 open of 1

A “job” is an application to the Department of Buildings to do construction work. A job marked Permitted, not signed off had a work permit issued but the city has no record of final sign-off (inspection/completion). Old jobs left in this state are common and appear in buyer and lender due diligence; the work may or may not have been done.

StatusJob #TypeFiledEst. cost
Not open
PLAN EXAM - DISAPPROVED · 2010-11-18
420283222
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2010-11-05$24,000

Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-11-05; data as of 2026-11-06; DOB Job Application Filings (BIS) — city dataset updated 2026-11-05; data as of 2026-11-06

Work permits 0

Individual permits issued under DOB jobs (one job can have several permits, e.g. plumbing and construction). Permit expiration alone does not mean the job was completed or signed off.

No records found in this dataset for this lot.

Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-11-05; data as of 2026-11-06; DOB Permit Issuance (BIS) — city dataset updated 2026-10-31; data as of 2026-10-31

DOB violations 0 active of 7

Violations issued by the Department of Buildings for building-code or zoning conditions. Active means DOB has not recorded the violation as resolved or dismissed. Many active DOB violations are old (e.g. elevator or boiler inspection paperwork).

StatusIssuedTypeDescriptionNumber
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2018-04-06LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDVIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2016 INSPECTION REPORTV*040618LBLVIO16725
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2009-12-31LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDV*123109LBLVIO20635
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2009-12-31LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDV*123109LBLVIO20634
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
1997-09-16LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*091697LL6291252769
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
1995-08-29LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*082995LL629143588
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
1994-06-07LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*060794LL629104294
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
1993-06-28LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*062893LL629112919

Source: DOB Violations — city dataset updated 2026-11-05; data as of 2026-11-06

ECB violations (DOB) 0 active of 1

DOB violations that go to a hearing at OATH (formerly the Environmental Control Board) and can carry fines. Active or Resolved follows the DOB violation status field. The hearing status is about the hearing and its penalty: written off means the city stopped collecting the fine, not that the condition was corrected. A balance due is a fine the city says is unpaid.

StatusIssuedSeverityWhat it was forPenalty / paid / balanceECB #
Resolved
Hearing: ADMIT/IN-VIO · Certification: CERTIFICATE ACCEPTED
2020-11-09CLASS - 2FLUE PIPE AND WATER PIPES NOT ENOUGH SUPPORT, CORRECT ALL VIOLATING CONDITIONS AND SUBMIT A CERTIFICATE OF CORRECTION$655 / $655 / $039031802R

Source: DOB ECB Violations — city dataset updated 2026-11-05; data as of 2026-11-06

OATH tickets (all agencies) 0 unpaid of 14

Summonses heard at the Office of Administrative Trials and Hearings, from agencies like Sanitation, Buildings, Fire and Health, linked to this lot’s block and lot. Default means the respondent did not appear at the hearing, which typically results in the maximum penalty. Tickets may be issued to tenants or businesses at the address, not just the owner. DOB ECB tickets appear here too.

StatusDateAgencyChargeRespondentImposed / paid / balanceTicket #
Hearing pending
NEW ISSUANCE
2026-10-27Dos - Enforcement AgentsIMPROPER RECEPTACLE FAILURE TO CONTAINERIZE - RESIDENTIAL 1STSGTP LLC$50 / $0 / $50080167166Y
Hearing pending
NEW ISSUANCE
2024-02-02Sanitation OthersDIRTY SIDEWALKSGTP LLC$50 / $0 / $50048147978L
No balance due
PAID IN FULL
2023-09-16Dos - Enforcement AgentsDIRTY SIDEWALKSGTP LLC$50 / $50 / $0048109185Y
No balance due
PAID IN FULL
2021-10-09Sanitation OthersDIRTY SIDEWALK DIRTY AREASGTP LLC$100 / $100 / $0047270108P
No balance due
PAID IN FULL · ADMIT IN-VIO
2020-11-09Dept. Of BuildingsFAIL MAINTAIN BLDG IN COMPLIANT MANNER: SERVICE EQUIPMENT - BOILERSGTP LLC$655 / $655 / $0039031802R
No balance due
PAID IN FULL
2019-12-24Sanitation OthersDIRTY SIDEWALK DIRTY AREASGTP LLC$100 / $100 / $00209169501
No balance due
PAID IN FULL
2018-06-05Dos - Enforcement AgentsLOOSE RUBBISHSGTP LLC$100 / $100 / $0040788504Z
No balance due
PAID IN FULL
2016-12-14Sanitation DeptFAILURE TO PROPERLY PUT RECYCS OUT FOR COLLECTION 1TO8DWELLING UNITSSGTP LLC$25 / $25 / —043864044H
No balance due Default
PAID IN FULL · DEFAULT
2014-02-08Dept Of TransportationFAILURE TO COMPLY WITH THE TERMS AND CONDITIONS OF DOT PERMITSCONSOLIDATED EDISON$1,230 / $1,200 / —0182721606
No balance due
PAID IN FULL
2012-04-05Sanitation DeptFAILURE TO CLEAN 18 INCHES INTO STREETHYATT PHARMACY$100 / $100 / —040996753X
No balance due
HEARING COMPLETED · DISMISSED
2009-04-15Dep - Bureau Of Env. CompliancFAILED TO INSTALL A BACKFLOW PREVENTERKALEMKERIDIS— / — / —0169741817
No balance due
PAID IN FULL
2004-12-21$100 / $200 / $-1000145191357

Showing 12 of 14 records. The API and the source dataset have the full list.

Source: OATH Hearings Division Case Status — city dataset updated 2026-11-06; data as of 2026-11-06

HPD registration & contacts

Owners of most rental buildings must register with the Department of Housing Preservation and Development each year and list an owner and managing agent.

HPD building ID
415948
Last registered
2026-09-04
Registration valid until
2027-09-01 CurrentRegistrations must be renewed every year.
RoleNameCompanyBusiness city
ShareholderTeddy KalemkeridisHicksville, Ny
CorporateownerSGTP LLCAstoria, Ny
ShareholderHarry KalemkeridisHicksville, Ny
HeadofficerTeddy KalemkeridisHicksville, Ny
SitemanagerTeddy Kalemkeridis
AgentTeddy KalemkeridisSGTPAstoria, Ny
OfficerHarry KalemkeridisHicksville, Ny

Source: HPD Multiple Dwelling Registrations — city dataset updated 2026-11-04; data as of 2026-11-06; HPD Registration Contacts — city dataset updated 2026-11-04; data as of 2026-11-06

HPD housing-code violations 0 open of 2

Violations HPD inspectors issued for conditions in residential buildings (heat, leaks, mold, pests, lead paint, etc.). Class letters show how serious: Class A – non-hazardous (HPD gives 90 days to correct); Class B – hazardous (30 days to correct); Class C – immediately hazardous (24 hours to correct for most conditions); Class I – information / order (e.g. orders to register, lead or other administrative orders). Open means HPD has not recorded the condition as corrected.

StatusClassIssuedAptCondition
Closed
Violation Dismissed · 2025-12-08
I2025-11-25§27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE SUBJECT TO CIVIL PENALTIES, PROHIBITED FROM CERTIFYING VIOLATIONS, AND DENIED THE RIGHT TO RECOVER POSSESSION OF PREMISE
Closed
Violation Dismissed · 2023-09-14
I2022-11-18§27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE SUBJECT TO CIVIL PENALTIES, PROHIBITED FROM CERTIFYING VIOLATIONS, AND DENIED THE RIGHT TO RECOVER POSSESSION OF PREMISE

Source: HPD Housing Maintenance Code Violations — city dataset updated 2026-11-05; data as of 2026-11-06

HPD complaints 0

Complaints tenants or others made to HPD (usually via 311) about housing conditions, from 2019 onward. A complaint is not a violation; HPD may inspect and issue one.

No records found in this dataset for this lot.

Source: HPD Housing Maintenance Code Complaints and Problems — city dataset updated 2026-11-06; data as of 2026-11-06

311 requests (last 12 months) 0

Recent 311 service requests the city geocoded to this lot: noise, illegal parking, heat, sanitation and more. Anyone can file them, so they describe activity at or near the address, not necessarily the building itself.

No records found in this dataset for this lot.

Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-11-06; data as of 2026-11-06

Nearby properties

More in Astoria (Central): Open HPD violations · Active DOB violations · Active ECB violations · Open DOB jobs · Unpaid OATH tickets

On 30 Ave

Same tax block (548)

All properties on 30 Ave, Queens · All of Queens 11102

Open-item counts as of November 6, 2026; each section lists its own dataset date. Machine-readable: JSON API · Markdown · Plain text · API & MCP docs