COMPANY RECORD · NEW YORK, NY
Nelson Air Device Corp — permit history in New York, NY
Nelson Air Device Corp appears on 50 New York permit records from 2020 through 2025, most often mechanical / hvac (88% of the record).
Permit categories
| Category | Permits | Share |
|---|---|---|
| Mechanical / HVAC | 44 | 88% |
| General construction | 6 | 12% |
2 categories, as classified by the issuing authority. Small categories stay visible rather than being rounded away.
Activity by year
| Year | Permits issued |
|---|---|
| 2020 | 12 |
| 2021 | 14 |
| 2022 | 9 |
| 2023 | 3 |
| 2024 | 8 |
| 2025 | 4 |
Busiest year on record: 2021, with 14 permits. One project can account for several filings, so read this as filing activity rather than workload.
Named on the same permit
| Name in source | Linked permits | Last seen |
|---|---|---|
| Alliance Plumbing Corp | 2 | 2025-06-01 |
1 companies are named alongside Nelson Air Device Corp on the same New York permit. A shared permit is a documented co-appearance, not proof of a current contract. Names appear as the authority published them.
Where they worked
| Address in source | Most recent permit |
|---|---|
| 177 FT WASHINGTON AVENUE | 2025-11-05 |
| 1545 ATLANTIC AVENUE | 2025-08-13 |
| 1091 AMSTERDAM AVENUE | 2025-01-30 |
| 301 EAST 17 STREET | 2024-09-19 |
| 450 EAST 29 STREET | 2024-07-17 |
| 585 SCHENECTADY AVENUE | 2024-04-15 |
| 585 SCHNECTADY AVENUE | 2024-04-09 |
| 476 5 AVENUE | 2024-02-27 |
| 435 EAST 30 STREET | 2024-02-06 |
| 577 FIRST AVENUE | 2024-01-18 |
| 1 PARK AVENUE | 2023-06-06 |
| 433 EAST 30 STREET | 2023-05-09 |
| 25-10 30 AVENUE | 2023-02-06 |
| 530 FIRST AVENUE | 2022-11-25 |
31 distinct addresses on record; the 14 most recent are shown. Declared value on record runs from $15,000 to $10,910,160, median $340,000. Addresses appear as the authority published them. A permit is a filing at an address, not a completed job there.
Permits on record
50 permits; open the full list
| Permit | Issued | Category | Address in source | Scope as filed | Declared value |
|---|---|---|---|---|---|
| M01224286-I1-MS | 2025-11-05 | Mechanical / HVAC | 177 FT WASHINGTON AVENUE | IR4 NEW MECHANICAL DUCTWORK, PIPING, TERMINAL EQUIPMENT, AND OTHER DEVICES WILL BE PROVIDED AS SHOWN ON PLANS, ALL WORK TO ACCOMMDOATE THE RENOVAITON OF THE 4TH FLOOR IR IMAGING | $615,000 |
| B00999648-S1-MS | 2025-08-13 | Mechanical / HVAC | 1545 ATLANTIC AVENUE | IMC 9 FL: REMOVAL OF HVAC EQUIPMENT AND DUCTWORK AT PARTIAL 9TH FLOOR AS PER PLANS. NO CHANGE TO USE, EGRESS OR OCCUPANCY | $15,000 |
| M01022106-S1-MS | 2025-01-30 | Mechanical / HVAC | 1091 AMSTERDAM AVENUE | Herewith filing mechanical modifications for Mount Sinai Stuyvesant Basement AHU Replacement - Phase 1. No change in use, egress, or occupancy. | $1,800,000 |
| M01022106-I1-GC | 2025-01-30 | General construction | 1091 AMSTERDAM AVENUE | Herewith filing general construction modifications for Mount Sinai Morningside Stuyvesant Basement AHU Replacement - Phase 1. No change in use, egress, or occupancy. | $300,000 |
| M01060266-I1-MS | 2024-09-19 | Mechanical / HVAC | 301 EAST 17 STREET | Herewith filing mechanical modifications for NYU HJD Air Handling AHU 6, 8 and 9 Replacement project. No change in use, egress, or occupancy. | $5,200,000 |
| M01039926-I1-MS | 2024-07-17 | Mechanical / HVAC | 450 EAST 29 STREET | Herewith filing mechanical modifications for NYU ACLS - 3rd Floor Mass Spectrometer. No change in use, egress, or occupancy. | $150,000 |
| B00856670-I1-GC | 2024-04-15 | General construction | 585 SCHENECTADY AVENUE | DMRI Water Tank: Modification of interior partitions and finishes to accommodate alterations for the new water tank room as indicated on plans filed herewith. | $100,000 |
| B00856676-I1-MS | 2024-04-09 | Mechanical / HVAC | 585 SCHNECTADY AVENUE | DMRI Water Tank: Modification of HVAC equipment and ductwork to accommodate alterations for the new water tank room as indicated on plans filed herewith. | $70,000 |
| M00963953-I1-MS | 2024-02-27 | Mechanical / HVAC | 476 5 AVENUE | PROVIDE SUPPLEMENTAL COOLING TO EXISTING SUBCELLAR MECHANICAL SPACE. | $240,000 |
| M00919417-I1-GC | 2024-02-06 | General construction | 435 EAST 30 STREET | NYU - 435 EAST 30TH STREET - SB 14TH DUCT MODIFICATION - GENERAL CONSTRUCTION MODIFICIATIONS AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY. | $40,000 |
| M00919421-I1-MS | 2024-02-06 | Mechanical / HVAC | 435 EAST 30 STREET | NYU - 435 EAST 30TH STREET - SB 14TH DUCT MODIFICATION - MECHANICAL MODIFICATIONS AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY. | $225,000 |
| M00898131-I1-MS | 2024-01-18 | Mechanical / HVAC | 577 FIRST AVENUE | HVAC and control improvements including removal and installation of new ceiling mounted AC units, condensers, piping and ductwork. Installation of new controls for the new units to | $1,200,000 |
| M00881095-I1-MS | 2023-06-06 | Mechanical / HVAC | 1 PARK AVENUE | Herewith filing Mechanical modifications for NYU Langone Condenser Water Riser Replacement project. No change in use, egress, or occupancy. | $105,000 |
| M00780878-I1-MS | 2023-05-09 | Mechanical / HVAC | 433 EAST 30 STREET | MSB 3RD AND 4TH FLOOR FITOUT - MECHANICAL MODIFICATIONS AS PER PLANS FILED HEREWITH. NO CHANGE IN USE EGRESS OR OCCUPANCY. | $2,250,000 |
| Q00753622-I1-MS | 2023-02-06 | Mechanical / HVAC | 25-10 30 AVENUE | Mount Sinai Medical Center - HVAC Modernization Project - MECHANICAL MODIFICATIONS AS INDICATED ON PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS OR OCCUPANCY | $6,000,000 |
| M00583071-I1-MS | 2022-11-25 | Mechanical / HVAC | 530 FIRST AVENUE | MECHANICAL WORK AS SHOWN HEREWITH. NO CHANGES TO EGRESS, OCCUPANCY OR USE. | $10,910,160 |
| M00632916-I1-MS | 2022-11-01 | Mechanical / HVAC | 530 FIRST AVENUE | HEREWITH FILING FOR MECHANICAL MODIFICATION AS PER PLANS FOR FIT OUT SCOPE. NO CHANGE IN USE, EGRESS OR OCCUPANCY. | $3,228,074 |
| M00752041-I1-MS | 2022-10-06 | Mechanical / HVAC | 424 EAST 34 STREET | Herewith filing for mechanical modifications on the 20th floor (kimmel) including addition of (2) air handlers and associated ductwork to the chiller plant. No change in use, egres | $529,000 |
| Q00755498-I1-GC | 2022-09-30 | General construction | 30-19 CRESCENT STREET | Mount Sinai - Modification to existing window to create new opening onto roof of adjacent building as per plans filed herewith. No change to use, egress, or occupancy. | $90,000 |
| M00628785-I1-MS | 2022-07-27 | Mechanical / HVAC | 540 FIRST AVENUE | NYU - Skirball - HIGH PRESSURE STEAM MODIFICATIONS ACCORDING TO PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY. | $89,000 |
| M00669318-I1-MS | 2022-06-06 | Mechanical / HVAC | 476 5 AVENUE | NYPL SASB workspace interior removal and installation of mechanical units. (Room 67) | $2,172,187 |
| M00682322-I1-MS | 2022-04-05 | Mechanical / HVAC | 435 EAST 30 STREET | MECHANICAL MODIFICATIONS AS INIDICATED ON THE PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS OR OCCUPANCY. | $99,000 |
| M00588142-I1-MS | 2022-03-16 | Mechanical / HVAC | 333 EAST 38 STREET | NYU Langone - MRI Domestic Water Backup - MECHANICAL MODIFICATIONS ACCORDING TO PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY. | $45,000 |
| M00621115-I1-MS | 2022-01-19 | Mechanical / HVAC | 435 EAST 30 STREET | MECHANICAL MODIFICATIONS INCLUDING THE INSTANLLATIONS OF FAN COIL UNIT AS INDICATED ON THA PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS OR OCCUPANCY. | $85,500 |
| M00350272-I1-MS | 2021-12-06 | Mechanical / HVAC | 433 EAST 30 STREET | NYU MSB and MSB Coles - HIGH PRESSURE STEAM PIPING MODIFICATIONS AS INDICATED IN PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS OR OCCUPANCY. | $350,000 |
| M00272157-I1-MS | 2021-11-10 | Mechanical / HVAC | 222 EAST 41 STREET | REMOVAL AND INSTALLATION OF MECHANICAL EQUIPMENT. NO CHANGE TO USE, EGRESS AND OCCUPANCY. | $3,861,800 |
| M00461214-I1-MS | 2021-09-07 | Mechanical / HVAC | 476 5 AVENUE | installation of mechanical systems for C2B. | $2,150,000 |
| M00532998-I1-MS | 2021-08-31 | Mechanical / HVAC | 1000 10 AVENUE | Mount Sinai - Mechanical modifications related to the Linac and CT Replacement as per plans filed herewith. No change in use, egress, or occupancy. | $330,000 |
| B00479043-I1-MS | 2021-08-24 | Mechanical / HVAC | 150 55 STREET | MECHANCIAL MODIFICATIONS ACCORDING TO PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY. | $25,000 |
| B00479007-I1-MS | 2021-08-24 | Mechanical / HVAC | 150 55 STREET | MECHANICAL MODIFICATIONS ACCORDING TO PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY. | $100,000 |
| B00472643-I1-GC | 2021-05-13 | General construction | 1545 ATLANTIC AVENUE | selective roof removal and replacement at the IMC Chapel | $600,000 |
| B00511316-I1-GC | 2021-05-05 | General construction | 1545 ATLANTIC AVENUE | MODIFICATION TO INTERIOR PARTITIONS AND FINISHES SELECTIVE ROOF REPLACEMENT AND EXTERIOR WORK TO ACCOMMODATE ALTERATIONS WITHIN THE EXISTING HOSPITAL BUILDING AS INDICATED ON PLANS | $100,000 |
| B00418988-I1-MS | 2021-03-12 | Mechanical / HVAC | 1545 ATLANTIC AVENUE | modifications of hvac equipment and ductwork to accommodate ac unit & cooling tower replacement as indicated on plans filed herewith. | $200,000 |
| B00444064-I1-MS | 2021-03-12 | Mechanical / HVAC | 1545 ATLANTIC AVENUE | HVAC MODIFICATION AS INDICATED ON PLANS FILED HEREWITH | $4,000,000 |
| M00403793-I1-MS | 2021-02-04 | Mechanical / HVAC | 562 FIRST AVENUE | NYULMC Tisch 4 - Phase I Anatomical Pathology Expansion - Mechanical modifications as per plans filed herewith. No change in use, egress, or occupancy. | $350,000 |
| M00285363-I1-MS | 2021-01-28 | Mechanical / HVAC | 620 WEST 168 STREET | ductwork modification to accommodate alterations to the central sterile unit | $265,000 |
| M00262968-I1-MS | 2021-01-15 | Mechanical / HVAC | 325 WEST 15 STREET | Mount Sinai - Chelsea Pharmacy - Mechanical modifications as per plans filed herewith. No change in use, egress, or occupancy. | $22,000 |
| M00304516-I1-MS | 2021-01-14 | Mechanical / HVAC | 433 EAST 30 STREET | NYU - AHU Replacement as per plans filed herewith. No change in use, egress, or occupancy. | $750,000 |
| B00414850-I1-MS | 2020-11-24 | Mechanical / HVAC | 1095 FLATBUSH AVENUE | MODIFICATION OF HVAC EQUIPMENT AND DUCTWORK TO ACCOMMODATE ALTERATIONS TO THE EXISTING MEDICAL OFFICE | $500,000 |
| M00400618-I1-MS | 2020-09-28 | Mechanical / HVAC | 334 AMSTERDAM AVENUE | THIS JOB IS BEING FILED TO OBTAIN CONSTRUCTION PERMITS AND EQUIPMENT USE CARD FOR THE TWO (2) DAIKIN AC UNITS ON THE ROOM LEVEL | $90,115 |
| M00236095-I1-MS | 2020-08-20 | Mechanical / HVAC | 530 FIRST AVENUE | HEREWITH FILING FOR MECHANICAL MODIFICATION ON THE HCC FOR STEAM HUMIDIFICATION AS PER PLANS. NO CHANGE IN USE,EGRESS OR OCCUPANCY. | $350,000 |
| B00343788-I1-MS | 2020-07-31 | Mechanical / HVAC | 506 6 STREET | hvac modifications to accommodate the AHU replacement | $3,000,000 |
| M00345022-I1-MS | 2020-07-31 | Mechanical / HVAC | 424 EAST 34 STREET | HEREWITH FILING FOR MECHANICAL WORK RELATED TO A TEMPORARY USE PERMIT AS PER AC 28-105.4.1. PROPOSED TEMPORARY USE FOR COVID19 TREATMENT WITHIN THE KIMMEL HOSPITAL AT NYU LANGONE M | $800,000 |
| M00355566-I1-MS | 2020-07-02 | Mechanical / HVAC | 5141 BROADWAY | HVAC modifications on partial 1st floor as per plans filed herewith only. | $70,000 |
| X00341047-I1-MS | 2020-05-18 | Mechanical / HVAC | 3424 KOSSUTH AVENUE | Modification of mechanical systems to support Emergency Surge Capacity renovations on floors 15-19 | $7,204,350 |
| X00344629-I1-MS | 2020-05-18 | Mechanical / HVAC | 3424 KOSSUTH AVENUE | Mechanical modification on the 5th , 6th & 10th floor. There is no change in egress, use or occupancy. | $1,104,000 |
| M00217250-I1-MS | 2020-02-11 | Mechanical / HVAC | 562 FIRST AVENUE | HEREWITH FILING FOR MECHANICAL MODIFICATION ON THE TISCH MECHANICAL ROOMS FOR STEAM HUMIDIFICATION AS PER PLANS. NO CHANGE IN USE, OCCUPANCY OR EGRESS. | $1,500,000 |
| M00261869-I1-MS | 2020-02-11 | Mechanical / HVAC | 1000 10 AVENUE | Mount Sinai - Maternity Beds and Infant Stabilization Room Renovations - Mechanical Modifications as per plans filed herewith. No change in use, egress, or occupancy. | $93,500 |
| M00261742-I1-MS | 2020-02-11 | Mechanical / HVAC | 1000 10 AVENUE | Mount Sinai West - Offices, Staff, Lounge, Lockers On Call Space Construction - Mechanical Modifications as per plans filed herewith. No change in use, egress, or occupancy. | $322,000 |
| M00261216-I1-MS | 2020-02-10 | Mechanical / HVAC | 1000 10 AVENUE | Mount Sinai West - Maternity Bed Reconfiguration - Mechanical Modifications as per plans filed herewith. No change in use, egress, or occupancy. | $656,500 |
Fields appear as the issuing authority published them, including spelling and blanks. Scope text is the applicant's description of intended work, not an inspection finding.
Source and limits
Public New York permit records through 2025, counted by distinct permit number. This is a historical filing record: it cannot show current backlog, pricing, crew availability, licensing or insurance, and a quiet period may only mean work was filed elsewhere. Confirm anything commercial with the company and with the issuing authority before acting. How we build these records, and what we withhold →