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21 Nicholas Avenue

Staten Island, NY 10302BBL 5-01086-0042Map

Owner of record: John Deflorio

21 Nicholas Avenue is a two-family home built in 2001 in Staten Island, 10302. It has 2 residential units across 2 floors. The owner of record is John Deflorio. HPD has recorded 4 housing violations here, most recently on June 17, 2026. 3 of the 4 most recent violations are still open.

HPD violations
4
DOB violations
1
ECB violations
6
HPD complaints
5

What to know

Concern
2 open Class C

Immediately hazardous issues among recent violations are still open.

Good
Last violation Jun 17, 2026

Date of the most recent HPD inspection that found a problem.

Good
No unpaid ECB fines

No balance due on recent ECB violations.

Rent stabilization

No rent-stabilized units in 2018–2024 tax bills

Some apartments can still be regulated. Use the rent-stabilized checker or request the rent history from HCR.

Violations

Most recent first. Showing up to 50 per agency.

HPD housing violations · 4

  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Jun 17, 2026

    Closed — Violation dismissed
  • C

    Provide adequate supply of hot water for the fixtures no volume in the entire apartment located at apt 1, 1st story, 1st apartment from north at east

    Jun 15, 2026 · Apt 1

    Open — Nov sent out
  • C

    Provide adequate supply of cold water for the fixtures no volume in the entire apartment located at apt 1, 1st story, 1st apartment from north at east

    Jun 15, 2026 · Apt 1

    Open — Nov sent out
  • B

    Repair, replace or provide an approved and operational carbon monoxide detecting device, installed in accordance with applicable law and rules missing in the entire apartment located at apt 1, 1st story, 1st apartment from north at east

    Jun 15, 2026 · Apt 1

    Open — Nov sent out

DOB building violations · 1

  • Construction other optional

    C-construction other optional

    Oct 27, 2000

    Dob violation - dismissed

ECB violations · 6

  • Non-hazardous

    Building occupied without a valid certificate of occupancy. noted: expired temporary c of o#500454947-t-1 (02-22-2002) remedy: obtain valid c of o.

    Jan 2, 2004

    Resolve
  • Non-hazardous

    Building occupied w/o a valid certificate of occupancy. noted : expired temporary c of o - 11-17-01 remedy : obtain valid c of o

    Dec 10, 2003

    Resolve
  • Non-hazardous

    Building occupied w/o a valid certificate of occupancy. noted : expired temporary c of o - 11-17-01 remedy : obtain valid c of o

    Dec 10, 2003

    Resolve
  • Non-hazardous

    Building occupied without a valid certificate of occupancy. noted: expired temporary c of o #500449008 tco-1 11/17/2001. remedy: obtain valid c of o.

    Nov 28, 2003

    Resolve
  • Non-hazardous

    Work w/o a permit. work noted : the basement has been illegally converted into an apartment, erecting partitions for bedroom, bathroom & kitchen. remedy : obtain permit or restore to prior legal condition.

    Nov 10, 2003

    Resolve
  • Non-hazardous

    Dwelling illegally converted from 1 to 2 families. noted : the basement has been illegally converted into an apartment. c. of o. # 500454938shows that the cellar /bsmt is for accessory used only. remedy : disco

    Nov 10, 2003

    Resolve

Complaints

  • Heat/hot water

    Entire building

    Jun 16, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Apartment only

    Jun 16, 2026 · Apt 2

    Close
  • Heat/hot water

    Entire building

    Jun 15, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Jun 14, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Jun 13, 2026 · Apt BLDG

    Close

Sales history

No recorded sales in our data

Sales come from the NYC Department of Finance rolling sales file.

Building details

Building type
Two-family home (B9)
Year built
2001
Floors
2
Residential units
2
Building area
1,400 ft²
Lot area
2,366 ft²
Zoning
R3A
Community board
501
Council district
49
Block / lot
1086 / 42
Assessed value
$39,600
Landmark / historic district
No

Questions about 21 Nicholas Avenue

Who owns 21 Nicholas Avenue?

The owner of record in NYC Department of City Planning PLUTO data is John Deflorio.

Does 21 Nicholas Avenue have violations?

Yes. NYC HPD has recorded 4 housing violations at this property.

Is 21 Nicholas Avenue rent stabilized?

No rent-stabilized units appear in its 2018–2024 tax bills. Individual apartments can still be regulated, so request the rent history from NYS Homes and Community Renewal if unsure.

When was 21 Nicholas Avenue built?

City records list 2001 as the year it was built.

How many apartments are in 21 Nicholas Avenue?

It has 2 residential units.

Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.