Two family frame

41-09 21 AVENUE

QUEENS · BIN 4015534

💬 Discuss this project

1920Year Built

2Stories

B2Building Class

R5Zoning

2,400 sfGross Floor Area

2Units

FDNY Report ↗

Two family frame · 3,300 sf lot · 0.73 FAR built · Flood zone X

Locations of Work

ArchitecturePlumbing

Floor 21p · 1 filing · 20 docs

Floor 1

Cellar1p · 1 filing · 20 docs

▾Sales History (ACRIS)

Date	Price	Unit	Seller → Buyer	$/sf
11/22/2024	$1.6M	—	Private party → Private party	$677/sf building

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
YOU GAO	4	02/25/2025

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
INDESIGN STUDIO	8	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
HOME STYLE IMPROVEMENTS *	General Contractor	3	03/21/2026
XH&RC PLBG AND HTG INC	Plumbing	1	07/08/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
YOU GAO	9407	4	02/25/2025

Building Lifecycle

All (31)Filed (4)Permit Issued (2)Signed Off (2)Inspection (5)Special Inspection (18)

04/14/2025

Signed off — Alteration

INTERIOR RENOVATION OF EXISTING 2-FAMILY BUILDING AS PER PLAN FILED HEREWITH. NO CHANGE IN USE, EGRESS OR OCCUPANCY.

Q01153145-S1

03/17/2025

Signed off — Alteration

INTERIOR RENOVATION OF EXISTING 2-FAMILY BUILDING AS PER PLAN FILED HEREWITH. NO CHANGE IN USE, EGRESS OR OCCUPANCY.

Q01153145-I1

03/14/2025

Inspection — Pass-Final General Construction Non-Directive 14

Pass

View inspection ↗

02/27/2025

Special inspection requirement — Fire-Resistant Penetrations and Joints

You Gao

02/27/2025

Special inspection requirement — Energy Code Compliance Inspections

You Gao

02/27/2025

Special inspection requirement — Fire-Resistance Rated Construction

You Gao

02/27/2025

Special inspection requirement — Interior lighting power

You Gao

02/25/2025

Filed — Alteration

INTERIOR RENOVATION OF EXISTING 2-FAMILY BUILDING AS PER PLAN FILED HEREWITH. NO CHANGE IN USE, EGRESS OR OCCUPANCY.

Q01153145-P2

02/25/2025

Special inspection requirement — Interior lighting power

You Gao

02/25/2025

Special inspection requirement — Fire-Resistant Penetrations and Joints

You Gao

02/25/2025

Special inspection requirement — Energy Code Compliance Inspections

You Gao

02/25/2025

Special inspection requirement — Fire-Resistance Rated Construction

You Gao

01/24/2025

Inspection — Certified Gas-Gas-Piping-Roughing

Certified

View inspection ↗

01/24/2025

Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing

Certified

View inspection ↗

01/24/2025

Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground

Certified

View inspection ↗

01/22/2025

Inspection — Certified Remove/Cap - work done in accordance with code

Certified

View inspection ↗

01/15/2025

Filed — Alteration

INTERIOR RENOVATION OF EXISTING 2-FAMILY BUILDING AS PER PLAN FILED HEREWITH. NO CHANGE IN USE, EGRESS OR OCCUPANCY.

Q01153145-P1

01/15/2025

Special inspection requirement — HVAC-R and service water heating system controls

You Gao

01/15/2025

Special inspection requirement — Fire-Resistant Penetrations and Joints

You Gao

01/15/2025

Special inspection requirement — Energy Code Compliance Inspections

You Gao

01/15/2025

Special inspection requirement — HVAC-R and service water heating equipment

You Gao

01/15/2025

Special inspection requirement — HVAC-R and service water piping design and insulation

You Gao

01/14/2025

Special inspection requirement — HVAC-R and service water piping design and insulation

You Gao

01/14/2025

Special inspection requirement — Fire-Resistant Penetrations and Joints

You Gao

01/14/2025

Special inspection requirement — Energy Code Compliance Inspections

You Gao

01/14/2025

Special inspection requirement — HVAC-R and service water heating equipment

You Gao

01/14/2025

Special inspection requirement — HVAC-R and service water heating system controls

You Gao

01/06/2025

Permit issued — Plumbing

Q01153145-S1-PL

12/16/2024

Permit issued — General Construction

Q01153145-I1-GC

12/11/2024

Filed — Alteration

INTERIOR RENOVATION OF EXISTING 2-FAMILY BUILDING AS PER PLAN FILED HEREWITH. NO CHANGE IN USE, EGRESS OR OCCUPANCY.

Q01153145-S1

12/11/2024

Filed — Alteration

INTERIOR RENOVATION OF EXISTING 2-FAMILY BUILDING AS PER PLAN FILED HEREWITH. NO CHANGE IN USE, EGRESS OR OCCUPANCY.

Q01153145-I1

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Plumbing	Signed-off	XH&RC PLBG AND HTG INC	01/06/2025
DOB NOW	General Construction	Signed-off	HOME STYLE IMPROVEMENTS *	12/16/2024

Nothing on file for this building.

▾Field Inspections (DOB CAP) — 5

Date	Type	Result	Report
03/14/2025	Pass-Final General Construction Non-Directive 14	Pass	View ↗
01/24/2025	Certified Gas-Gas-Piping-Roughing	Certified	View ↗
01/24/2025	Certified Water and Sanitary-WS-Sanitary Piping-Roughing	Certified	View ↗
01/24/2025	Certified Water and Sanitary-WS-Sanitary Piping-Underground	Certified	View ↗
01/22/2025	Certified Remove/Cap - work done in accordance with code	Certified	View ↗

▾Special Inspection Requirements (DOB NOW) — 18

Date	Requirement	Inspector	Role
02/27/2025	Fire-Resistant Penetrations and Joints	You Gao	special
02/27/2025	Energy Code Compliance Inspections	You Gao	progress
02/27/2025	Fire-Resistance Rated Construction	You Gao	progress
02/27/2025	Interior lighting power	You Gao	energy_progress
02/25/2025	Interior lighting power	You Gao	energy_progress
02/25/2025	Fire-Resistant Penetrations and Joints	You Gao	special
02/25/2025	Energy Code Compliance Inspections	You Gao	progress
02/25/2025	Fire-Resistance Rated Construction	You Gao	progress
01/15/2025	HVAC-R and service water heating system controls	You Gao	energy_progress
01/15/2025	Fire-Resistant Penetrations and Joints	You Gao	special
01/15/2025	Energy Code Compliance Inspections	You Gao	progress
01/15/2025	HVAC-R and service water heating equipment	You Gao	energy_progress
01/15/2025	HVAC-R and service water piping design and insulation	You Gao	energy_progress
01/14/2025	HVAC-R and service water piping design and insulation	You Gao	energy_progress
01/14/2025	Fire-Resistant Penetrations and Joints	You Gao	special
01/14/2025	Energy Code Compliance Inspections	You Gao	progress
01/14/2025	HVAC-R and service water heating equipment	You Gao	energy_progress
01/14/2025	HVAC-R and service water heating system controls	You Gao	energy_progress

▾Documents — 26 on file (BIS + DOB NOW)

▸Plans & Drawings4

▸DOB NOWPlans/Sketch4

08/21/2026Q01153145-I1Request digital key ↗

08/21/2026Q01153145-S1Request digital key ↗

08/21/2026Q01153145-P1Request digital key ↗

Showing 3 of 4 on file for this type

▸Seals & Professional Certifications18

▸DOB NOWProgress Inspector Seal & Signature10

08/31/2026Q01153145-P2Open ↗

Showing 3 of 10 on file for this type

▸DOB NOWDPL-1: Design Professional Seal & Signature4

08/21/2026Q01153145-I1Open ↗

08/21/2026Q01153145-S1Open ↗

08/21/2026Q01153145-P1Open ↗

Showing 3 of 4 on file for this type

▸DOB NOWSpecial Inspector Seal & Signature4

08/31/2026Q01153145-P2Open ↗

08/30/2026Q01153145-P1Open ↗

08/23/2026Q01153145-I1Open ↗

Showing 3 of 4 on file for this type

▸Environmental & Asbestos4

▸DOB NOWDEP ACP-5: Asbestos Assessment Report4

08/21/2026Q01153145-I1Open ↗

08/21/2026Q01153145-S1Open ↗

08/21/2026Q01153145-P1Open ↗

Showing 3 of 4 on file for this type