COMPANY RECORD · PHILADELPHIA, PA
A. T. Chadwick Company Inc. — permit history in Philadelphia, PA
A. T. Chadwick Company Inc. appears on 137 Philadelphia permit records from 2021 through 2026, most often plumbing (54.7% of the record).
Permit categories
| Category | Permits | Share |
|---|---|---|
| Plumbing | 75 | 54.7% |
| Mechanical | 62 | 45.3% |
2 categories, as classified by the issuing authority. Small categories stay visible rather than being rounded away.
Activity by year
| Year | Permits issued |
|---|---|
| 2021 | 18 |
| 2022 | 29 |
| 2023 | 31 |
| 2024 | 8 |
| 2025 | 33 |
| 2026 | 18 |
Busiest year on record: 2025, with 33 permits. One project can account for several filings, so read this as filing activity rather than workload.
Names on the same project timelines
| Name in source | Linked permits | Last seen |
|---|---|---|
| Lf Driscoll Company LLC | 18 | 2026-09-29 |
| Gilbane Building Company | 13 | 2026-02-04 |
| Target Bldg Constructn Inc | 13 | 2026-10-26 |
| Bsi Construction LLC | 13 | 2026-04-15 |
| Intech Construction LLC | 9 | 2025-02-25 |
| Structure Tone LLC | 7 | 2025-06-17 |
| Turner Construction Co | 7 | 2025-05-14 |
| Hunter Roberts Holdings LLC | 5 | 2025-04-22 |
| Skanska USA Building Inc | 4 | 2026-04-06 |
| Pride Enterprises Inc | 2 | 2023-04-07 |
| Ernest Bock & Sons, Inc. | 1 | 2022-09-02 |
| Clemens Construction Co Inc.. | 1 | 2023-06-02 |
21 named participants share a resolved project timeline with A. T. Chadwick Company Inc.. A shared timeline is a research lead, not proof of a partnership or a current contract. Names appear as the authority published them.
Where they worked
| Address in source | Most recent permit |
|---|---|
| 3401 CIVIC CENTER BLVD | 2026-10-26 |
| 1900 KITTY HAWK AVE | 2026-10-15 |
| 2716 SOUTH ST | 2026-09-29 |
| 8724 CRISPIN ST | 2026-09-28 |
| 635-53 E ERIE AVE | 2026-09-17 |
| 3501 CIVIC CENTER BLVD | 2026-07-06 |
| 1126-36 ARCH ST | 2026-06-30 |
| 1601-51 N 12TH ST | 2026-04-14 |
| 801-49 PINE ST | 2026-04-06 |
| 14400 TOWNSEND RD | 2026-03-31 |
| 1300 PATTISON AVE | 2026-02-04 |
| 3701 MARKET ST | 2025-12-29 |
| 1225 CONSTITUTION AVE | 2025-10-06 |
| 801 E ERIE AVE | 2025-09-04 |
51 distinct addresses on record; the 14 most recent are shown. Addresses appear as the authority published them. A permit is a filing at an address, not a completed job there.
Also named on permits at the same addresses
| Company | Shared addresses | Years |
|---|---|---|
| Oliver Sprinkler Co., Inc. | 11 | 2021–2026 |
| Joseph F Spaeder | 8 | 2021–2026 |
| Tandem Associates Inc | 8 | 2022–2026 |
| Hatzel & Buehler Inc | 8 | 2021–2026 |
| Bsi Construction LLC | 7 | 2021–2026 |
| Herman Goldner Co Inc | 7 | 2021–2026 |
| Preferred Fire Protection Inc | 7 | 2021–2026 |
| Klehr Harrison Harvey Branzburg LLP | 7 | 2021–2026 |
Companies that also appear in Philadelphia permit records at addresses where A. T. Chadwick Company Inc. filed, in any year. Sharing an address is a documented co-appearance, not proof that they worked on the same project or with each other.
Permits on record
137 permits; open the 50 most recent
| Permit | Issued | Category | Address in source | Scope as filed | Declared value |
|---|---|---|---|---|---|
| PP-2026-014198 | 2026-10-26 | Plumbing | 3401 CIVIC CENTER BLVD | Install new sink in CT Scan Room, along with new med gas overhead piping. In mechanical room, install new floor drain, eyewash, and misc. domestic water piping | |
| PP-2026-011810 | 2026-10-15 | Plumbing | 1900 KITTY HAWK AVE | EXTENSION OF ADDITIONAL WORK INTO NEW CONSTRUCTION BUILDING. INTERIOR INSTALLATION OF DRAINAGE, WASTE, VENT, AND WATER SUPPLY FOR LISTED FIXTURES. ALL MATERIALS SHALL BE METALLIC T | |
| MP-2026-005475 | 2026-09-29 | Mechanical | 2716 SOUTH ST | FOR THE INSTALLATION OF MECHANICAL CHILLED AND HEATING WATER PIPING MAINS, BRANCHES, AND EQUIPMENT CONNECTIONS TO SERVICE NEW FANS COIL UNITS AND VAV SEVICES TO SERVICE NEW LAB RES | |
| PP-2026-012096 | 2026-09-28 | Plumbing | 8724 CRISPIN ST | - Approved plumbing work associated with an ADDITION per EZ Permit Standard for Plumbing | |
| MP-2026-004932 | 2026-09-23 | Mechanical | 1900 KITTY HAWK AVE | FOR INSTALLATION OF HVAC APPLIANCES, EQUIPMENT, DUCTWORK AND REGISTERS/DIFFUSERS PER APPROVED PLANS AND MANUFACTURER'S SPECIFICATIONS. | |
| MP-2026-004862 | 2026-09-17 | Mechanical | 635-53 E ERIE AVE | FOR THE INSTALLATION OF TWO (2) BOILS WITH ASSOCIATED PIPING WITHIN AN EXISTING MECHANICAL ROOM AS PER APPROVED PLANS AND IN ACCORDANCE WITH 2021 IMC. SEPARATE PERMITS TO BE OBTAIN | |
| PP-2026-011971 | 2026-09-03 | Plumbing | 3401 CIVIC CENTER BLVD | Install 2 roof drains for a new roof, and install 1 hose bib | |
| MP-2026-003567 | 2026-07-06 | Mechanical | 3501 CIVIC CENTER BLVD | FOR THE INSTALLATION OF GAS PIPING AS PER APPROVED PLANS. | |
| MP-2026-001871 | 2026-06-30 | Mechanical | 1126-36 ARCH ST | FOR THE REMOVAL AND REPLACEMENT OF BOILER BREECHING AS PER APPROVED PLANS AND IN ACCORDANCE WITH 2018 IMC. SEPARATE PERMITS TO BE OBTAINED FOR ALL OTHER WORK. IF SITE CONDITIONS VA | |
| PP-2026-003009 | 2026-05-22 | Plumbing | 3401 CIVIC CENTER BLVD | ALTERATIONS TO HOSPITAL. INTERIOR INSTALLATION OF DRAINAGE, WASTE, VENT, AND WATER SUPPLY FOR LISTED FIXTURES. ALL MATERIALS SHALL BE METALLIC TO ROOF EXTENSION. VENTING TO BE DESI | |
| MP-2026-001844 | 2026-04-15 | Mechanical | 1900 KITTY HAWK AVE | FOR THE INSTALLATION OF REGISTERS, DIFFUSERS AND APPLIANCES WITH ASSOCIATED DUCTWORK. APPLIANCES TO BE INSTALLED IN ACCORDANCE WITH THE MANUFACTURER’S SPECIFICATIONS. ALL WORK TO B | |
| PP-2026-004339 | 2026-04-14 | Plumbing | 1601-51 N 12TH ST | REPLACE WATER HEATER. | |
| MP-2026-001625 | 2026-04-06 | Mechanical | 801-49 PINE ST | FOR THE REPLACEMENT OF TWO (2) GRDs AND ONE (1) TOILET ROOM EXHAUST FAN AS PER APPROVED PLANS AND IN ACCORDANCE WITH 2018 IMC. SEPARATE PERMITS TO BE OBTAINED FOR ALL OTHER WORK. S | |
| PP-2026-002084 | 2026-03-31 | Plumbing | 14400 TOWNSEND RD | ALTERATIONS TO 420 UNION HALL. INTERIOR INSTALLATION OF DRAINAGE, WASTE, VENT, AND WATER SUPPLY FOR LISTED FIXTURES. ALL MATERIALS SHALL BE METALLIC TO ROOF EXTENSION. VENTING TO B | |
| PP-2026-001176 | 2026-03-27 | Plumbing | 1900 KITTY HAWK AVE | NEW CONSTRUCTION OF MIXED USE BUILDING. INTERIOR INSTALLATION OF DRAINAGE, WASTE, VENT, AND WATER SUPPLY FOR LISTED FIXTURES. ALL MATERIALS SHALL BE METALLIC TO ROOF EXTENSION. VEN | |
| PP-2026-003614 | 2026-03-26 | Plumbing | 801-49 PINE ST | Add new sink and WC for toilet room. *WITHOUT PIPING* | |
| MP-2026-000145 | 2026-03-02 | Mechanical | 3501 CIVIC CENTER BLVD | FOR A NEW MECHANICAL WORK TO ACCOMMODATE A PORTION OF AN EXISTING STRUCTURE.** ALL WORK TO BE DONE PER APPROVED PLANS. **IF FIELD CONDITIONS VARY CONTACT DESIGN ENGINEER PRIOR TO T | |
| PP-2025-014867 | 2026-02-04 | Plumbing | 1300 PATTISON AVE | EXTENSION OF EXISTING BUILDING TO CREATE A RESTAURANT/BAR SPACE. INTERIOR INSTALLATION OF DRAINAGE, WASTE, VENT, AND WATER SUPPLY FOR LISTED FIXTURES. | |
| MP-2025-006566 | 2025-12-29 | Mechanical | 3701 MARKET ST | FOR ALTERATIONS TO AN EXISTING HVAC SYSTEM TO INCLUDE THE RELOCATION OF GRDs AS PER APPROVED PLANS AND IN ACCORDANCE WITH 2018 IMC. SEPARATE PERMITS TO BE OBTAINED FOR ALL OTHER WO | |
| PP-2025-014732 | 2025-12-26 | Plumbing | 1300 PATTISON AVE | INTERIOR ALTERATIONS TO FINISH BAR SPACES IN EXISTING COMMERCIAL SPORTS COMPLEX. INSTALLATION OF DRAINAGE WASTE, VENT, AND WATER SUPPLY FOR LISTED FIXTURES. NO FOOD PREPERATIONS FI | |
| PP-2025-016421 | 2025-12-24 | Plumbing | 3701 MARKET ST | Add new sink and WC for toilet room | |
| PP-2025-014637 | 2025-12-15 | Plumbing | 1300 PATTISON AVE | ALTERATIONS TO CREAT A BEER GARDEN. INTERIOR INSTALLATION OF DRAINAGE, WASET, VENT, AND WATER SUPPLY FOR LISTED FIXTURES. ALL MATERIALS TO BE METALLIC TO ROOF EXTENSION. VENTING TO | |
| MP-2025-006013 | 2025-12-08 | Mechanical | 1300 PATTISON AVE | FOR THE INSTALLATION OF FUEL GAS PIPING AS PER APPROVED PLANS AND IN ACCORDANCE WITH 2018 IFGC. SEPARATE PERMITS TO BE OBTAINED FOR ALL OTHER WORK. SEE CP-2025-001046 FOR ASSOCIATE | |
| MP-2025-006026 | 2025-12-08 | Mechanical | 1300 PATTISON AVE | FOR THE INSTALLATION OF HVAC APPLIANCES, GRDs, AND EXHAUSTS WITH ASSOCIATED DUCTWORK AND FUEL GAS PIPING AS PER APPROVED PLANS AND IN ACCORDANCE WITH 2018 IMC AND 2018 IFGC. SEPARA | |
| MP-2025-006030 | 2025-12-04 | Mechanical | 1300 PATTISON AVE | FOR THE INSTALLATION OF REGISTERS, DIFFUSERS, AND APPLIANCES WITH ASSOCIATED DUCTWORK. APPLIANCES TO BE INSTALLED IN ACCORDANCE WITH MANUFACTURER'S SPECIFICATIONS. ALL WORK TO BE D | |
| PP-2025-014909 | 2025-12-04 | Plumbing | 3501 CIVIC CENTER BLVD | Amend Permit 5/22/2026 - Link to parent building permit Performing plumbing water supply, drainage piping from riser mains to fixtures | |
| PP-2025-014629 | 2025-12-03 | Plumbing | 1300 PATTISON AVE | Complete Plumbing Rough In and Finish of Stage Area Toilet Room and Roof Drainage. Domestic Water, Sanitary above and below grade, Storm above and below grade. Supply and install 4 | |
| PP-2025-014617 | 2025-12-03 | Plumbing | 801-49 PINE ST | INSTALL 3 SINKS, 1 MOP SINK, 1 EYEWASH SINK AND 1 FLOOR DRAIN. ALL WORK TO BE DONE ACCORDING TO THE 2018 PPC | |
| MP-2025-005806 | 2025-12-03 | Mechanical | 801-49 PINE ST | FOR THE INSTALLATION OF NEW HVAC APPLIANCES, GRDs, AND ASSOCIATED DUCTWORK AND PIPING AND FOR THE RELOCATION OF ONE (1) EXISTING APPLIANCE (VAV). ALL WORK TO BE DONE PER APPROVED P | |
| MP-2025-005931 | 2025-11-20 | Mechanical | 635-53 E ERIE AVE | INSTALLATION OF HVAC AND FUEL GAS SYSTEMS FOR A FACTORY/WAREHOUSE AS PER APPROVED PLANS. *2018 IMC REVIEW* | |
| MP-2025-003747 | 2025-10-06 | Mechanical | 1225 CONSTITUTION AVE | FOR THE INSTALLATION OF A FUEL OIL SUPPLY, FILLING STATION AND ASSOCIATED VENT PIPING. ALL WORK TO BE DONE PER APPROVED PLANS. IF FIELD CONDITIONS VARY CONTACT DESIGN ENGINEER PRIO | |
| MP-2025-004556 | 2025-09-15 | Mechanical | 1900 KITTY HAWK AVE | FOR INSTALLATION OF ADDITONAL HEATING EQUIPMENTS TO THE EXISTING WAREHOUSE AS PER APPROVED PLANS. | |
| PP-2025-011427 | 2025-09-09 | Plumbing | 3401 CIVIC CENTER BLVD | NEW ISNSTALLATION OF 6 NEW FLOOR DRAINS WITH TRAP PRIMERS, 1 NEW EYEWASH FIXTURE, AND ALL ASSOCIATED PIPING FOR PROCESS RENOVATION. ALL WORK TO BE PERFORMED IN STRICT COMPLIANCE WI | |
| MP-2025-003109 | 2025-09-04 | Mechanical | 801 E ERIE AVE | FOR THE INSTALLATION OF HVAC APPLIANCES, EQUIPMENT, DUCTWORK AND REGISTERS/DIFFUSERS PER APPROVED PLANS AND MANUFACTURER'S SPECIFICATIONS. *2018 IMC REVIEW* | |
| MP-2025-003895 | 2025-08-07 | Mechanical | 1225 CONSTITUTION AVE | FOR CONNECTING THE FUEL OIL PIPING AND EXHAUST PIPING FROM DIESEL ENGINE TO THE MUFFLER TO INCLUDE THE INSTALLATION OF MIMI VRF UNITS, A VRF SYSTEM TO SERVICE THE COMMON AREA / AME | |
| MP-2025-002425 | 2025-07-29 | Mechanical | 1126-36 ARCH ST | FOR THE INSTALLATION OF REGISTERS, DIFFUSERS, AND APPLIANCES WITH ASSOCIATED DUCTWORK. APPLIANCES TO BE INSTALLED IN ACCORDANCE WITH MANUFACTURER'S SPECIFICATIONS. ALL WORK TO BE D | |
| PP-2025-009410 | 2025-07-25 | Plumbing | 2227 ISLAND AVE | INSTALL SANITARY & STORM CT, FAI, MD & 1.5 WDP. | |
| PP-2025-000069 | 2025-07-09 | Plumbing | 3501 CIVIC CENTER BLVD | NEW CONSTRUCTION CORE AND SHELL. SCOPE OF WORK AS FOLLOWS: Interior Core and shell plumbing for tie-ins taking place at a later date. Domestic water supply risers for future use. | |
| PP-2024-015845 | 2025-06-30 | Plumbing | 9125 ACADEMY RD | Plumbing Permit for combo SP-2024-001133 | |
| MP-2025-003301 | 2025-06-19 | Mechanical | 3025-53 MARKET ST | FOR THE INSTALLATION OF FUEL GAS PIPING SYSTEM TO BE INSTALLED IN ACCORDANCE WITH THE MANUFACTURER’S SPECIFICATIONS. FOR USE AS PREVIOUSLY APPROVED. ALL WORK TO BE DONE PER APPROVE | |
| PP-2025-005712 | 2025-06-17 | Plumbing | 3025-53 MARKET ST | Install plumbing fixtures and equipment on first floor and lower mezzanine. Connect domestic water, sanitary and natural gas to kitchen equipment on first floor. 1 Electric wate | |
| PP-2025-003205 | 2025-05-14 | Plumbing | 225 N 38TH ST | INTERIOR LAB FITOUT. INSTALLATION OF SANITARY AND LAB DRAINAGE, WASTE, VENT, AND WATER SUPPLY FOR LISTED FIXTURES. VENTING SHALL BE DESIGNED AND INSTALLED IN ACCORDANCE WITH SECTIO | |
| PP-2025-000790 | 2025-04-22 | Plumbing | 2300 MARKET ST | INSTALL 9 LAB SINKS, 3 SINKS, 1 MOP SINK, 1 ICE MAKER, 2 HOT WATER HEATERS, 4 OPEN END DRAINS, 3 FLOOR DRAINS AND 5 EMERGENCY SHOWERS ACCORDING TO THE 2018 PPC AND PER PLANS. | |
| MP-2025-001091 | 2025-04-14 | Mechanical | 400 MARKET ST | FOR THE INSTALLATION OF HVAC APPLIANCES, GRDs, AND ASSOCIATED DUCTWORK AND A STAIRWAY ENCLOSURE PRESSURIZATION SYSTEM THROUGHOUT A MULTI-FAMILY OCCUPANCY WITHIN THE EXISTING HIGH-R | |
| PP-2025-001528 | 2025-04-09 | Plumbing | 3300 CHESTNUT ST | AMENDMENT 7/18/2025 BACKFLOW PREVENTER MODEL REVISED FROM 909 TO 957 NEW CONSTRUCTION OF 5 STORY BUILDING. INTERIOR INSTALLATION OF DRAINAGE, WASTE, VENT, AND WATER SUPPLY FOR LIS | |
| MP-2025-001728 | 2025-03-28 | Mechanical | 225 N 38TH ST | FOR THE INSTALLATION OF REGISTERS, DIFFUSERS, AND APPLIANCES WITH ASSOCIATED DUCTWORK. APPLIANCES TO BE INSTALLED IN ACCORDANCE WITH THE MANUFACTURER’S SPECIFICATIONS. ALL WORK TO | |
| PP-2025-004123 | 2025-03-28 | Plumbing | 225 N 38TH ST | Install (2) two new natural gas fired domestic hot water heaters, including new domestic water piping and natural gas piping as shown for new DHW heaters and new san/vent piping fo | |
| PP-2024-017555 | 2025-02-25 | Plumbing | 1909 WALNUT ST | Adding a Bar to the 4th floor terrace. We are installing 1 bar sink w/waste line, 1 water heater, 1 area drain and 1 Floor sink as well as 1 area drain. PER PPC AND APPROVED PLANS | |
| MP-2025-000794 | 2025-02-25 | Mechanical | 3300 CHESTNUT ST | FOR THE INSTALLATION OF REGISTERS, DIFFUSERS, AND APPLIANCES WITH ASSOCIATED DUCTWORK. APPLIANCES TO BE INSTALLED IN ACCORDANCE WITH MANUFACTURER'S SPECIFICATIONS. ALL WORK TO BE D | |
| MP-2025-000354 | 2025-02-07 | Mechanical | 2300 MARKET ST | FOR THE INSTALLATION OF A NEW HVAC SYSTEMS AT LEVEL 3, ASSOCIATED DUCT WORK, ROOFTOP UNITS, DUCTLESS SYSTEMS, AND REGISTERS/DIFFUSERS AS PER APPROVED PLANS. SEPARATE PERMIT REQUIR |
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.
Questions about A. T. Chadwick Company Inc.
What permits has A. T. Chadwick Company Inc. filed in Philadelphia?
137 building and trade permits on record from 2021 through 2026, most often plumbing (54.7% of the record).
When did A. T. Chadwick Company Inc. last file a permit in Philadelphia?
The most recent permit on record was issued 2026-10-26: plumbing at 3401 CIVIC CENTER BLVD.
Where does A. T. Chadwick Company Inc. work?
51 distinct Philadelphia addresses appear on its permits, most often in ZIP codes 19104, 19112, 19148.
Which companies appear on permits with A. T. Chadwick Company Inc.?
Most often Lf Driscoll Company LLC, Gilbane Building Company, Target Bldg Constructn Inc. Appearing on the same permit is a documented co-appearance, not proof of a current contract.
Search these records
The 137 permits above are a static record through 2026. Select a year above to open that year’s records, or search A. T. Chadwick Company Inc. in Philadelphia, PA by address, trade or date range.
Source and limits
Public Philadelphia permit records through 2026, 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 →
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