COMPANY RECORD · PHILADELPHIA, PA
Walnut St Development LLC — permit history in Philadelphia, PA
Walnut St Development LLC appears on 47 Philadelphia permit records from 2021 through 2026, most often building (31.9% of the record).
Permit categories
| Category | Permits | Share |
|---|---|---|
| Building | 15 | 31.9% |
| Zoning | 14 | 29.8% |
| Residential Building | 12 | 25.5% |
| Mechanical | 6 | 12.8% |
4 categories, as classified by the issuing authority. Small categories stay visible rather than being rounded away.
Activity by year
| Year | Permits issued |
|---|---|
| 2021 | 8 |
| 2022 | 9 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 8 |
| 2026 | 12 |
Busiest year on record: 2026, with 12 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 |
|---|---|---|
| Drijon Gjoni | 14 | 2026-10-23 |
| Thomas Uhl | 14 | 2026-10-21 |
| Angel Heating & Cooling Inc | 13 | 2026-07-21 |
| Aqueduct Fire Protection Systems, LLC | 11 | 2025-06-02 |
| Mk Fire Protection & Supply, LLC | 6 | 2026-10-12 |
| Ayn HVAC Inc | 6 | 2023-01-08 |
| Michael J Mccullough Jr | 5 | 2026-10-28 |
| Express Power Inc | 5 | 2023-03-02 |
| Justin's Plumbing And Heating LLC | 5 | 2026-04-20 |
| B M Consulting Services Inc | 2 | 2022-03-04 |
| Prostar Plumbing LLC | 2 | 2025-06-25 |
| Eagle Electrical Construction Co Inc | 2 | 2022-07-25 |
17 named participants share a resolved project timeline with Walnut St Development LLC. 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 |
|---|---|
| 2524 FEDERAL ST | 2026-10-07 |
| 1004 S 20TH ST | 2026-09-25 |
| 1512 CHRISTIAN ST | 2026-07-17 |
| 432 W NORRIS ST | 2026-03-11 |
| 921 S 20TH ST | 2026-02-06 |
| 923 S 20TH ST | 2026-02-06 |
| 2118 FERNON ST | 2025-05-20 |
| 615 S DELHI ST | 2025-03-10 |
| 1222 S 20TH ST | 2025-03-07 |
| 1220 S 20TH ST | 2025-02-20 |
| 1218 S 20TH ST | 2025-01-16 |
| 2326 GERRITT ST | 2024-08-29 |
| 1127 S 20TH ST | 2023-11-06 |
| 1004 S 19TH ST | 2023-09-07 |
28 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 |
|---|---|---|
| Thomas Uhl | 25 | 2021–2026 |
| Drijon Gjoni | 15 | 2022–2026 |
| Angel Heating & Cooling Inc | 13 | 2023–2026 |
| Aqueduct Fire Protection Systems, LLC | 12 | 2021–2025 |
| Justin's Plumbing And Heating LLC | 10 | 2023–2026 |
| Express Power Inc | 7 | 2021–2023 |
| Mk Fire Protection & Supply, LLC | 6 | 2023–2026 |
| Michael J Mccullough Jr | 6 | 2025–2026 |
Companies that also appear in Philadelphia permit records at addresses where Walnut St Development LLC 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
47 permits; open the full list
| Permit | Issued | Category | Address in source | Scope as filed | Declared value |
|---|---|---|---|---|---|
| MP-2026-003847 | 2026-10-07 | Mechanical | 2524 FEDERAL ST | FOR THE INSTALLATION OF REGISTERS, DIFFUSERS, AND APPLIANCES WITH ASSOCIATED DUCTWORK. APPLIANCES TO BE INSTALLED IN ACCORDANCE WITH THE MANUFACTURER’S SPECIFICATIONS. FOR USE AS P | |
| RP-2026-006781 | 2026-09-25 | Residential Building | 1004 S 20TH ST | NEW CONSTRUCTION OF A THREE-STORY BUILDING WITH BASEMENT AND PRIVATE ROOF DECK/PILOT HOUSE FOR USE AS A TWO-FAMILY DWELLING AS PER APPROVED PLANS. BUILDING TO BE FULLY SPRINKLERED. | |
| CP-2026-003416 | 2026-09-01 | Building | 2524 FEDERAL ST | **2018 IBC REVIEW** FOR THE ERECTION OF AN ATTACHED 3-STORY STRUCTURE WITH ROOF ACCESS STRUCTURE FOR ACCESS TO AN OCCUPIABLE ROOF DECK. STRUCTURE FOR USE AS MULTI-FAMILY HOUSEHOLD | |
| ZP-2026-006722 | 2026-07-22 | Zoning | 1004 S 20TH ST | FOR THE ERECTION OF AN ATTACHED BUILDING TO INCLUDE ROOF DECK, ROOF DECK ACCESS STRUCTURE, AND WALKOUT DECK AT SECOND FLOOR LEVEL. SIZE AND LOCATION AS SHOWN IN APPLICATION/PLANS | |
| CP-2026-003250 | 2026-07-17 | Building | 1512 CHRISTIAN ST | FOR THE ERECTION OF AN ATTACHED 3-STORY STRUCTURE WITH ROOF ACCESS STRUCTURE FOR ACCESS TO AN OCCUPIABLE ROOF DECK. STRUCTURE FOR USE AS MULTI-FAMILY HOUSEHOLD LIVING THREE (3) DW | |
| ZP-2026-006176 | 2026-06-16 | Zoning | 1512 CHRISTIAN ST | FOR THE ERECTION OF AN ATTACHED STRUCTURE TO INCLUDE A ROOF DECK, ROOF DECK ACCESS STRUCTURE, AND REAR DECK AT THE SECOND FLOOR. SIZE AND LOCATION AS SHOWN IN PLANS. | |
| ZP-2026-006258 | 2026-06-15 | Zoning | 2524 FEDERAL ST | FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH REAR DECK ON SECOND FLOOR, ROOF DECK AND ROOF DECK ACCESS STRUCTURE. SIZE AND LOCATION AS SHOWN IN PLAN. | |
| RP-2026-000659 | 2026-03-11 | Residential Building | 432 W NORRIS ST | FOR THE CONSTRUCTION OF AN ATTACHED STRUCTURE WITH CELLAR AND ROOF DECK ACCESSED BY ROOF DECK ACCESS STRUCTURE TO INCLUDE REAR 2ND FLOOR DECK. FOR USE AS A TWO-FAMILY HOUSEHOLD LIV | |
| CP-2025-005265 | 2026-02-06 | Building | 921 S 20TH ST | FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH ROOF DECK AND ROOF DECK ACCESS STRUCTURE. FOR USE AS THREE (3) DWELLING UNITS. BUILDING TO BE FULLY SPRINKLERED PER NFPA 13R. SEPARAT | |
| CP-2025-005230 | 2026-02-06 | Building | 923 S 20TH ST | FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH A ROOF DECK AND PILOT HOUSE. STRUCTURE FOR USE AS THREE (3) DWELLING UNITS. SPRINKLERED THROUGHOUT PER NFPA 13R. SEPARATE PERMITS REQ | |
| ZP-2025-002671 | 2026-02-05 | Zoning | 923 S 20TH ST | FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH A ROOF DECK AND ROOF DECK ACCESS STRUCTURE ABOVE AND A DECK AT THE REAR. SIZE AND LOCATION AS SHOWN IN THE APPLICATION / PLANS. | |
| ZP-2025-012619 | 2026-01-21 | Zoning | 432 W NORRIS ST | FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH A ROOF DECK AND ROOF DECK ACCESS STRUCTURE ABOVE AND A DECK AT THE REAR. SIZE AND LOCATION AS SHOWN IN THE APPLICATION / PLANS. | |
| ZP-2025-001615 | 2025-10-01 | Zoning | 921 S 20TH ST | FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH ROOF DECK AND ROOF DECK ACCESS STRUCTURE. SIZE AND LOCATION AS SHOWN IN PLAN. | |
| RP-2025-002405 | 2025-05-20 | Residential Building | 2118 FERNON ST | FOR THE ERECTION OF AN ATTACHED THREE (3) STORY STRUCTURE WITH A ROOF DECK AND ROOF DECK ACCESS STRUCTURE ABOVE. FOR USE AS A SINGLE FAMILY HOUSEHOLD LIVING. BUILDING TO BE SPRINKL | |
| ZP-2025-001724 | 2025-04-01 | Zoning | 2118 FERNON ST | FOR THE ERECTION OF AN ATTACHED BUILDING WITH A ROOF DECK AND ROOF DECK ACCESS STRUCTURE, REAR DECK AT SECOND FLOOR. SIZE AND LOCATION AS SHOWN ON PLANS. | |
| RP-2025-000429 | 2025-03-10 | Residential Building | 615 S DELHI ST | FOR NEW CONSTRUCTION OF A THREE (3) STORY WOOD-FRAME ATTACHED STRUCTURE ON REINFORCED CONCRETE FOOTINGS/FOUNDATIONS WITH A ROOF DECK. FOR USE AS A SINGLE-FAMILY DWELLING THROUGHOUT | |
| CP-2024-006015 | 2025-03-07 | Building | 1222 S 20TH ST | FOR THE ERECTION OF AN ATTACHED THREE (3) STORY STRUCTURE WITH A ROOF DECK AND ROOF DECK ACCESS STRUCTURE. FOR USE AS A MULTI-FAMILY HOUSEHOLD LIVING CONTAINING THREE (3) DWELLING | |
| CP-2024-006040 | 2025-02-20 | Building | 1220 S 20TH ST | FOR THE ERECTION OF AN ATTACHED 3-STORY BUILDING WITH A ROOF DECK AND ROOF DECK ACCESS STRUCTURE FOR THE USE OF R2 (3 DWELLING UNTIS) OCCUPANCY. BUILDING TO BE FULLY SPRINKLERED IN | |
| CP-2024-006013 | 2025-01-16 | Building | 1218 S 20TH ST | FOR NEW CONSTRUCTION OF A THREE-STORY WOOD-FRAME ATTACHED STRUCTURE ON REINFORCED CONCRETE FOOTINGS/FOUNDATIONS. FOR USE AS A MULTI-FAMILY HOUSEHOLD LIVING FOR THREE (3) DWELLING | |
| ZP-2024-012617 | 2025-01-14 | Zoning | 615 S DELHI ST | FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH ROOF DECK ACCESSED FROM A PILOTHOUSE, SIZE AND LOCATION AS SHOWN ON THE PLANS. | |
| ZP-2024-009758 | 2024-11-13 | Zoning | 1222 S 20TH ST | FOR THE ERECTION OF TWO (2) ATTACHED, 3-STORY STRUCTURES; FOR USE AS A MULTI-FAMILY RESIDENTIAL PLANNED UNIT DEVELOPMENT WITH SIX (3) UNITS EACH (TOTAL OF 6 UNITS). EACH UNIT IS TO | |
| RP-2024-006709 | 2024-08-29 | Residential Building | 2326 GERRITT ST | FOR NEW CONSTRUCTION OF A THREE- STORY WOOD-FRAME ATTACHED STRUCTURE ON REINFORCED CONCRETE FOOTINGS/FOUNDATIONS WITH A ROOF DECK AND A ROOF DECK ACCESS STRUCTURE. FOR USE AS A SIN | |
| ZP-2024-006748 | 2024-08-15 | Zoning | 2326 GERRITT ST | FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH CELLAR AND EIGHT FEET FRONT SETBACK ABOVE 2ND FLOOR; AND ACCESSORY ROOF DECK FOR RESIDENTIAL USE ONLY WITH ROOF ACCESS STRUCTURE. SIZ | |
| ZP-2024-007065 | 2024-08-12 | Zoning | 1218 S 20TH ST | FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH A ROOF DECK AND ROOF DECK ACCESS STRUCTURE ABOVE. SIZE AND LOCATION AS SHOWN IN THE APPLICATION/PLANS. | |
| CP-2023-004900 | 2023-11-06 | Building | 1127 S 20TH ST | FOR NEW CONSTRUCTION OF THREE-STORY BUILDING WITH CELLAR, REAR DECK, ROOF DECK AND ROOF-DECK ACCESS STRUCTURE FOR USE AS MULTI-FAMILY HOUSEHOLD LIVING (THREE DWELLING UNITS). BUIL | |
| RP-2023-009184 | 2023-09-07 | Residential Building | 1004 S 19TH ST | MAKE SAFE TO REPAIR DECK AT THE REAR TO ADDRESS CASE FILE CF-2023-080661 AS PER APPLICATION/PLANS AND IN ACCORDANCE WITH THE 2018 IRC. SEPARATE PERMITS REQUIRED FOR ALL OTHER WORK. | |
| ZP-2023-007277 | 2023-08-11 | Zoning | 1127 S 20TH ST | FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH A REAR DECK AND A ROOF DECK ACCESSED BY A PILOTHOUSE, SIZE AND LOCATION AS SHOWN ON THE PLANS. | |
| RP-2023-001475 | 2023-08-02 | Residential Building | 1006 S 19TH ST | FOR THE ERECTION OF AN ATTACHED THREE (3) STORY STRUCTURE FOR USE AS A TWO-FAMILY HOUSEHOLD LIVING. BUILDING TO BE SPRINKLERED IN ACCORDANCE WITH NFPA 13D THROUGHOUT. ALL WORK TO B | |
| CP-2023-003277 | 2023-06-14 | Building | 1825 N 17TH ST | FOR THE STRUCTURAL REPAIR TO FLOOR AND WALL ASSEMBLIES TO RESOLVE CASE #CF-2023-051801. A SEPARATE PERMIT IS REQUIRED FOR ANY ADDITIONAL ALTERATIONS THAT ARE NOT SPECIFICALLY ADDRE | |
| CP-2022-006837 | 2023-03-18 | Building | 2335 WHARTON ST | FOR THE ERECTION OF A THREE (3) STORY STRUCTURE OF TYPE V-B CONSTRUCTION WITH BASEMENT, BALCONIES, ROOF DECK, AND ROOF DECK ACCESS STRUCTURE FOR USE AS THREE (3) DWELLING UNITS (GR | |
| CP-2022-002955 | 2022-10-11 | Building | 1731 W MONTGOMERY AVE | FOR THE ERECTION OF AN ATTACHED 3 STORY STRUCTURE WITH ROOF ACCESS STRUCTURES FOR ACCESS TO ROOF DECK FOR USE AS MULTI-FAMILY HOUSEHOLD LIVING THREE (3) DWELLING UNITS. ALL WORK TO | |
| MP-2021-008162 | 2022-08-22 | Mechanical | 430 MIFFLIN ST | Mechanical / Fuel Gas Permit for combo RP-2021-015978 | |
| CP-2022-002103 | 2022-08-19 | Building | 1817 N 18TH ST | FOR THE ERECTION OF AN ATTACHED THREE STORY VB STRUCTURE WITH A BASEMENT, TWO ROOF DECKS AND TWO ROOF DECK ACCESS STRUCTURES FOR USE AS MULTI-FAMILY (THREE UNITS) HOUSEHOLD LIVING. | |
| CP-2022-003151 | 2022-07-25 | Building | 1940 N 18TH ST | FOR A NEW CONSTRUCTION OF A THREE-STORY WOOD-FRAME ATTACHED STRUCTURE ON REINFORCED CONCRETE FOOTINGS/FOUNDATIONS WITH A ROOF DECK ACCESSED BY TWO (2) ROOF DECK ACCESS STRUCTURES. | |
| CP-2022-002120 | 2022-07-06 | Building | 1825 N 17TH ST | FOR THE ERECTION OF AN ATTACHED, THREE STORY STRUTURE OF TYPE VB CONSTRUCTION WITH A CELLAR AND ROOF DECKS WITH ROOF ACCESS STRUCTURES AS PER PLANS. FOR THREE (3) DWELLING UNITS WI | |
| ZP-2022-004653 | 2022-06-28 | Zoning | 1731 W MONTGOMERY AVE | APPLICATION IS FOR A NEW CONSTRUCTION OF AN ATTACHED BUILDING WITH A ROOF DECK AND A ROOF ACCESS STRUCTURE (SIZE AND LOCATION AS SHOWN ON PLANS/APPLICATION) | |
| CP-2022-002122 | 2022-06-20 | Building | 1841 N 17TH ST | FOR NEW CONSTRUCTION OF AN ATTACHED THREE-STORY BUILDING WITH CELLAR, ROOF DECKS AND ROOF-DECK ACCESS STRUCTURES FOR USE AS MULTI-FAMILY HOUSEHOLD LIVING (THREE DWELLING UNITS). B | |
| MP-2021-007974 | 2022-04-13 | Mechanical | 1836 WILLINGTON ST | Mechanical / Fuel Gas Permit for combo RP-2021-015889 | |
| ZP-2022-003404 | 2022-04-04 | Zoning | 1925 N 18TH ST | FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH ROOF DECK AND ROOF DECK ACCESS STRUCTURE. SIZE AND LOCATION AS SHOWN IN APPLICATION/PLANS. | |
| MP-2021-008144 | 2021-12-23 | Mechanical | 611 S DELHI ST | Mechanical / Fuel Gas Permit for combo RP-2021-017953 | |
| RP-2021-015978 | 2021-12-03 | Residential Building | 430 MIFFLIN ST | FOR THE ERECTION OF A THREE (3) STORY ATTACHED STRUCTURE OF TYPE V-B CONSTRUCTION TO INLCUDE UNDERPINNING WITH BASEMENT, ROOF DECK, AND ROOF DECK ACCESS STRUCTURE FOR USE AS A SING | |
| RP-2021-017953 | 2021-12-02 | Residential Building | 611 S DELHI ST | FOR CONSTRUCTION OF AN ATTACHED STRUCTURE AS PER APPROVED PLAN; FOR USE AS SINGLE-FAMILY HOUSEHOLD LIVING; SHEETING AND SHORING AS PRESCRIBED IN THE GEOTECH REPORT; SEPARATE PERMIT | |
| RP-2021-015889 | 2021-11-23 | Residential Building | 1836 WILLINGTON ST | ERECTION OF AN ATTACHED STRUCTURE FOR USE AS TWO FAMILY HOUSEHOLD LIVING. SHEETING AND SHORING AS PRESCRIBED IN GEO TECH REPORT. SEPARATE PERMITS REQUIRED FOR SPRINKLER (13R) WORK. | |
| MP-2021-000994 | 2021-02-19 | Mechanical | 1725 N GRATZ ST | EZ PERMIT DUCTWORK & WARM-AIR APPLIANCES- For Mechanical Work to include the installation as per attached standards. Deviations from these standards require submission of constr | |
| RP-2021-000326 | 2021-02-05 | Residential Building | 1529 S WOODSTOCK ST | FOR THE ERECTION OF AN ATTACHED THREE (3) STORY STRUCTURE OF TYPE VB CONSTRUCTION WITH A CELLAR AND A ROOF DECK WITH A ROOF ACCESS STRUCTURE AS PER PLANS. | |
| RP-2020-013727 | 2021-01-28 | Residential Building | 1725 N GRATZ ST | NEW CONSTRUCTION OF A THREE (3) STORY TWO-FAMILY DWELLING WITH ROOF DECK AND PILOT HOUSE (FOR ACCESS TO ROOF DECK) AS PER APPROVED PLANS. BUILDING TO BE FULLY SPRINKLERED NFPA 13D. | |
| MP-2021-000242 | 2021-01-13 | Mechanical | 1919 BROWN ST | EZ PERMIT DUCTWORK & WARM-AIR APPLIANCES- For Mechanical Work to include the installation as per attached standards. Deviations from these standards require submission of constr |
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.
Search these records
The 47 permits above are a static record through 2026. Select a year above to open that year’s records, or search Walnut St Development LLC 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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