C3D Architecture PLLC

Architect of recordNew York CityManhattan, Queens, Brooklyn

Editor's note

C3D Architecture works for one landlord above all. Stonehenge Management is the owner on 122 of the firm's 166 jobs. Nearly all are apartment renovations in Manhattan. The filings are short and repeat. Unit 16C at 235 West 48th Street. Units 6H and 15B at 165 East 66th Street. That is the base of the practice. The outliers are large. In September the firm filed a proposed 70-story mixed-use tower at 100 West 37th Street for FY & Sons. The biggest jobs on file are an $8,311,180 change-of-use job at 371 7th Avenue and a $6,000,000 new building at 31-48 Crescent Street in Queens. Of the 166 jobs, 162 are in Manhattan. The firm made 19 filings in the last 90 days.

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.
100 West 37th StreetProposed a new 70-Story with sub-cellar & cellar mix-used New Building. Obtain C of O.	Manhattan	New building	Sep 24, 2026	Not yet	$1,000	M00643592
65 Bank StreetFire Damage repairs on 4th and 6th floors. Removal of partitions with walls, floors and finishes. No change of use, egress, or occupancy under this application	Manhattan	Alteration	Sep 23, 2026	Not yet	$272,994	M01447596
65 Bank StreetFire Damage repairs on Cellar And 1st Floors. Removal of partitions with wall, floors and finishes. No change of use, egress, or occupancy under this application	Manhattan	Alteration	Sep 23, 2026	Not yet	$116,005	M01447604
1270 Lexington AvenueAlteration Type I application is being filed to increase the number of residential units on 4th, 5th & 7th floors.	Manhattan	Alteration with new certificate of occupancy	Sep 2, 2026	Not yet	$107,985	M00486050
235 West 48th StreetHerewith filing for interior renovations of unit 16c as per plans.no change to use, egress or occupancy.	Manhattan	Alteration	Sep 2, 2026	Not yet	$40,000	M01450197
165 East 66th StreetHerewith filing for interior renovations of apt 6h and 15b as per plans. No change to use occupancy or egress.	Manhattan	Alteration	Aug 27, 2026	Not yet	$80,000	M01417119
360 East 65th StreetHerewith filing for interior renovations as per plans in units 8g as per plans. No change to use occupancy or egress.	Manhattan	Alteration	Aug 20, 2026	Not yet	$40,000	M01443954
11 Avenue MInstallation of temporary dry standpipe system during construction in conjunction with nb # b00998383-i1.	Brooklyn	New building	Aug 19, 2026	Not yet	Not stated	B00998383
55-06 43rd StreetThis Alteration Type I application is being filed for the vertical enlargement addition of the Mezzanine.	Queens	Alteration with new certificate of occupancy	Aug 17, 2026	Not yet	$549,994	Q00575933
165 East 66th StreetHerewith filing for modifications to the plumbing fixtures in units 6h and 15b as per plans. No change to use, occupancy, or egress.	Manhattan	Alteration	Jul 29, 2026	Not yet	$40,000	M01417137

Activity, last 16 weeks

23 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
371 7th Avenue	Manhattan	Alteration with new certificate of occupancy	Dec 5, 2024	FY & Sons Tic LLC.	$8.3 million
31-48 Crescent Street	Queens	New building	Oct 1, 2024	Quantum Design	$6.0 million
14 East 69th Street	Manhattan	Alteration with new certificate of occupancy	Mar 11, 2026	PR	$987,500
221 East 48th Street	Manhattan	Alteration with new certificate of occupancy	Apr 17, 2025	Sun Sun Contracting, Inc.	$918,200
480 Canal Street	Manhattan	Alteration	Mar 13, 2025	Apogee Events	$899,990

Filings by year

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

Year	Filings
2024 (partial)	36
2025	141
2026 (partial)	74

Where the work is

Projects on file by boroughs and by job type.

Borough	Projects
Manhattan	162
Queens	3
Brooklyn	1

Job type	Projects
Alteration	147
Alteration with new certificate of occupancy	13
New building	5
No-work filing	1

Clients on record

Owners named most often on this firm's filings.

Stonehenge Management LLC122 jobs
FY & Sons Tic LLC.5 jobs

Other architects on this site

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

Fogarty Finger Architecture PLLCManhattan · 38 filings, 90 days
VoconManhattan · 34 filings, 90 days
STVManhattan · 26 filings, 90 days
Aztec Architects, LLCManhattan · 12 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
Magnus GS Inc	Contractor	43	Sep 2, 2026
Emprise Construction Inc	General contractor	13	Aug 20, 2026
Proven Renovation LLC	General contractor	6	Jul 9, 2026
Gea Consulting Engineers	Engineer	2	Aug 19, 2026
Premier Sanitation LLC	Contractor	2	Nov 13, 2025
R'Pol Construction Inc	General contractor	2	Oct 9, 2025
MG Engineering D.P.C.	Engineer	1	Sep 24, 2026
McNamara Salvia	Engineer	1	Sep 24, 2026

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