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
Immediately hazardous issues among recent violations are still open.
Date of the most recent HPD inspection that found a problem.
No balance due on recent ECB violations.
Rent stabilization
No rent-stabilized units in 2018–2024 tax bills
Violations
Most recent first. Showing up to 50 per agency.
HPD housing violations · 4
- IInformation / order
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 - CImmediately hazardous
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 - CImmediately hazardous
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 - BHazardous
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
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.