Issac & Stern Architects, P.C.

Architect of recordNew York CityBrooklyn, Manhattan, Queens, The Bronx, Staten Island

Editor's note

Issac & Stern Architects designs new buildings. Of its 41 jobs on file, 26 are new buildings. That is the highest share on this site. Of the 41, 27 are apartment buildings. The firm files in all five boroughs. Brooklyn has 19 jobs and Manhattan has 13. In September it filed an 8-story mixed-use building at 711 Grand Street in Brooklyn, listed at $5,000,000. It also filed a run of mechanical and plumbing jobs for new buildings on 41st Street, 35th Avenue and Steinway Street in Queens. The two largest jobs on file are change-of-use jobs for Yellowstone Real Estate. One is $34,601,553 at 440 West 57th Street. One is $29,611,900 at 220 West 42nd Street. The firm made 44 filings in the last 90 days. That is up from 29.

Josh Steinman, EditorUpdated October 1, 2026

Most recent filings

Full record on NYC Open Data

The ten most recent job filings naming this firm as architect of record. Values are as declared on the filing.

Address	Borough	Job type	Filed	Permit issued	Declared value	DOB job no.
711 Grand StreetConstruction of 8 story mixed use new building.	Brooklyn	New building	Sep 22, 2026	Not yet	$5.0 million	B00673535
35-20 41st StreetMechanical work type hereby filed subsequent to the NB GC application: Q01430748-I1	Queens	New building	Sep 11, 2026	Not yet	Not stated	Q01430748
527 Myrtle AvenueInstall plumbing system and fixtures for new building as per plans filed.	Brooklyn	New building	Sep 10, 2026	Not yet	Not stated	B01418056
40-16 35th AvenueMechanical work type hereby filed subsequent to the NB GC application: Q01416407-I 1	Queens	New building	Sep 10, 2026	Not yet	Not stated	Q01416407
35-13 Steinway StreetMechanical work type hereby filed subsequent to the NB GC application: Q01416408-I1	Queens	New building	Sep 10, 2026	Not yet	Not stated	Q01416408
35-08 41st StreetPlumbing work type hereby filed subsequent to the NB GC application: Q01424030-I1	Queens	New building	Sep 10, 2026	Not yet	Not stated	Q01424030
105 Underhill AvenueInstall support of excavation in conjunction with alt co #b01117069-i1. No change to use egress or occupancy.	Brooklyn	Alteration with new certificate of occupancy	Aug 28, 2026	Not yet	$1,000	B01117069
220 West 42nd StreetFiled pursuant to article i, chapter v of the nyc zoning resolution and article 7b of the nys multiple dwelling law for residential conversion including partial demolition and permitted reconstruction of non-compliant bu	Manhattan	Alteration with new certificate of occupancy	Aug 24, 2026	Not yet	$29.6 million	M01220723
144-16 38th AvenueGeneral_construction	Queens	New building	Aug 11, 2026	Not yet	Not stated	Q01441728
2683 Atlantic AvenueMechanical	Brooklyn	New building	Aug 6, 2026	Not yet	Not stated	B00683623

Activity, last 16 weeks

33 active jobs across the period

Jobs with a filing or permit action in each week, June 15, 2026 to the week of September 28, 2026. Hover a bar for the week.

Largest jobs on file

By declared value on the filing. Declared value is what the applicant stated, not a contract price.

Address	Borough	Job type	Filed	Owner on filing	Declared value
440 West 57th Street	Manhattan	Alteration with new certificate of occupancy	Mar 9, 2026	Yellowstone Real Estate	$34.6 million
220 West 42nd Street	Manhattan	Alteration with new certificate of occupancy	Aug 24, 2026	Yellowstone Real Estate	$29.6 million
711 Grand Street	Brooklyn	New building	Sep 22, 2026	Irving at Decatur	$5.0 million
309 Avenue of the Americas	Manhattan	New building	Jun 17, 2026	Not stated	$3.5 million
431 7th Avenue	Brooklyn	New building	Aug 20, 2025	PR	$2.5 million

Filings by year

Job filings naming this firm, by the year filed. Our NYC record starts August 1, 2024.

Year	Filings
2024 (partial)	26
2025	150
2026 (partial)	88

Where the work is

Projects on file by boroughs and by job type.

Borough	Projects
Brooklyn	19
Manhattan	13
Queens	5
The Bronx	3
Staten Island	1

Job type	Projects
New building	26
Alteration with new certificate of occupancy	8
Alteration	6
Major alteration, elements to remain	1

Clients on record

Owners named most often on this firm's filings.

Yellowstone Real Estate2 jobs
Underhill Gardens LLC2 jobs
Irving at Decatur2 jobs

Other architects on this site

Architects of record with recent NYC filings, nearest in area first.

Bohn Architecture and DesignBrooklyn · 19 filings, 90 days
Warren Meister Architects, PCBrooklyn · 11 filings, 90 days
Urban Pioneering ArchitectureBrooklyn · 5 filings, 90 days
Read Architecture Design DPCBrooklyn · 2 filings, 90 days

Who they work with

Other firms named on the same jobs: the architects, engineers and contractors this firm shows up alongside in the record. Linked names have their own page here.

Firm	Role on those jobs	Jobs together	Most recent
A&d Engineering, PLLC	Engineer	20	Sep 22, 2026
Structural Engineering Technologies	Engineer	18	Sep 22, 2026
Pro-H Development Inc	Contractor	4	Aug 28, 2026
EP Engineering LLC	Engineer	3	Aug 24, 2026
Z & T Engineering, P.C.	Engineer	2	Aug 28, 2026
Desimone Consulting Engineering	Engineer	2	Aug 24, 2026
Countywide Builders Inc	General contractor	2	Aug 5, 2026
McNamara Salvia	Engineer	2	Jun 23, 2026

Source: NYC Department of Buildings job filings (DOB NOW and BIS), via NYC Open Data. Extracted October 1, 2026.Send a correction