Two family converted from one family

61 ALTER AVENUE

STATEN ISLAND · Grasmere-Arrochar-South Beach-Dongan Hills · BIN 5048621

💬 Discuss this project

1910Year Built

2Stories

B3Building Class

R3XZoning

1,856 sfGross Floor Area

2Units

FDNY Report ↗

Two family converted from one family · 3,480 sf lot · 0.53 FAR built · Flood zone X

Locations of Work

ArchitectureElectrical

Roof2p · 1 filing · 4 docs

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
GREEN RIVER ENVIRONMENTAL ENGINEERI	1	01/21/2026

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
NY State Solar LLC	2	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
NYSS LLC	General Contractor	1	04/09/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
GREEN RIVER ENVIRONMENTAL	7841	1	01/21/2026

Building Lifecycle

All (3)Filed (1)Permit Issued (1)Signed Off (1)

03/19/2026

Signed off — Alteration

INSTALLATION OF PHOTOVOLTAIC SOLAR ARRAY ON EXISTING ROOF SYSTEM AS PER PLANS

S01348908-I1

01/22/2026

Permit issued — Solar

S01348908-I1-SL

01/21/2026

Filed — Alteration

INSTALLATION OF PHOTOVOLTAIC SOLAR ARRAY ON EXISTING ROOF SYSTEM AS PER PLANS

S01348908-I1

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Solar	Signed-off	NYSS LLC	01/22/2026
BIS	PL	ISSUED	INTERBORO PLUMBING& HEATING CORP	11/09/1992
BIS	—	ISSUED	RESULTS ROOFING	07/30/1992

1 project · most recent 01/20/2026

Filed	Status	Contractor	Scope
01/20/2026	Complete	NY SOLAR ELECTRICAL LLC	—

Nothing on file for this building.

▾Documents — 7 on file (BIS + DOB NOW)

▸Plans & Drawings1

▸DOB NOWPlans/Sketch1

08/17/2026S01348908-I1Request digital key ↗

▸Applications & Permits1

▸BISPLAN / WORK APPROVAL APPLICATION1

04/05/2022500043348Open ↗

▸Seals & Professional Certifications1

▸DOB NOWDPL-1: Design Professional Seal & Signature1

08/17/2026S01348908-I1Open ↗

▸Environmental & Asbestos1

▸DOB NOWDEP ACP-5: Asbestos Assessment Report1

08/17/2026S01348908-I1Open ↗

▸Approvals, Objections & Sign-offs3

▸BISLETTERS - SUPPORTING DOCUMENTATION1

04/05/2022500043348Open ↗

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST1

04/05/2022500043348Open ↗

▸DOB NOWUtility Company Final Acceptance Letter1

08/13/2026S01348908-I1Open ↗