Yiu Hang (Ken) Ng
- Listed as
- contractor, designer
- Firm
- Sf Plumbing & Fire Protection Inc
- Based in
- San Francisco
- On San Francisco permits
- Jul 2023 to May 2026
29 permits since 2000 (contractor on 29 permits, designer on 4 permits): 18 completed, 11 in progress.
This is the city’s permit record, not a license check: the role and the number come from what was written on each permit (the number spelled one way). It does not show whether the license is current. Their ranked record as a contractor is on their contractor page. How to read these records
Most recent permits
| Filed | Outcome | Address | Contractor | Work described on the permit | Declared cost |
|---|---|---|---|---|---|
| May 29, 2026 | In progress issued May 2026 | 1252 Church St | Sf Plumbing & Fire Protection Inc | revision to fire sprinkler permit 202602125792. change 2" combination water meter to 1.5" meter and recalculate system.Details
revision to fire sprinkler permit 202602125792. change 2" combination water meter to 1.5" meter and recalculate system. | |
| Feb 20, 2026 | In progress issued Apr 2026 | 2900 Alemany Bl | Sf Plumbing & Fire Protection Inc | partial modification of (e) fire sprinkler system in the building areas (locker room, open excercise & customer lounge) total heads= 119. ref pa #2024-1114-5010Details
partial modification of (e) fire sprinkler system in the building areas (locker room, open excercise & customer lounge) total heads= 119. ref pa #2024-1114-5010 | $73,899 |
| Feb 12, 2026 | In progress issued Feb 2026 | 1252 Church St | Sf Plumbing & Fire Protection Inc | install new fire sprinkler throughout building per nfpa13d including /combination water service per nfpa24 (total heads 46) ref pa# 2022-0722-9104, pa# 202510308543Details
install new fire sprinkler throughout building per nfpa13d including /combination water service per nfpa24 (total heads 46) ref pa# 2022-0722-9104, pa# 202510308543 | $28,566 |
| Feb 6, 2026 | In progress issued Feb 2026 | 534 Octavia St | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system throughout bldg per nfpa 13 incudling 2" underground dedicate fire service per nfpa 24 (total head 53) ref pa 202112204766Details
install new fire sprinkler system throughout bldg per nfpa 13 incudling 2" underground dedicate fire service per nfpa 24 (total head 53) ref pa 202112204766 | $34,155 |
| Jan 2, 2026 | In progress issued Jan 2026 | 154 Liberty St | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system throughout bldging per nfpa 13r including 2" dedicate fire service per nfpa 24 (total sprinklers 55) ref#: 202509296345.Details
install new fire sprinkler system throughout bldging per nfpa 13r including 2" dedicate fire service per nfpa 24 (total sprinklers 55) ref#: 202509296345. | $34,155 |
| Dec 30, 2025 | In progress issued Jan 2026 | 134 02nd Av | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system throughout bulding per nfpa13 including new 2in u/g fire service per nfpa 24 (total sprinklers 66). ref pa 2021-0217-4839.Details
install new fire sprinkler system throughout bulding per nfpa13 including new 2in u/g fire service per nfpa 24 (total sprinklers 66). ref pa 2021-0217-4839. | $40,986 |
| Dec 23, 2025 | Completed final sign-off Sep 2026 | 109 Grand View Av | Sf Plumbing & Fire Protection Inc | as built to pa#: 202511260472. fire sprinkler system.Details
as built to pa#: 202511260472. fire sprinkler system. | |
| Nov 26, 2025 | Completed final sign-off Sep 2026 | 109 Grand View Av | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system per nfpa 13-d throughout building including 1 1/2 combination fire service per nfpa 2,4 (total heads 40) ref pa 202302162085-s2Details
install new fire sprinkler system per nfpa 13-d throughout building including 1 1/2 combination fire service per nfpa 2,4 (total heads 40) ref pa 202302162085-s2 | $24,840 |
| Sep 15, 2025 | In progress issued Sep 2025 | 328 27th St | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system per nfpa 13-r throughout building including 2" dedicated fire service per nfpa 24 (total sprinklers 51). ref pa # 2022-1128-7259.Details
install new fire sprinkler system per nfpa 13-r throughout building including 2" dedicated fire service per nfpa 24 (total sprinklers 51). ref pa # 2022-1128-7259. | $31,671 |
| Sep 15, 2025 | Completed final sign-off May 2026 | 138 Parker Av | Sf Plumbing & Fire Protection Inc | relocate 3 fire sprinkler heads cibbect to (e) system per ti 202505216958, 201606270973Details
relocate 3 fire sprinkler heads cibbect to (e) system per ti 202505216958, 201606270973 | $1,863 |
| Aug 18, 2025 | In progress issued Aug 2025 | 571 Clipper St | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system per nfpa13 2022 throughout building including 2" dedicated fire service per nfpa 24 (total fire sprinkler 62) ref pa # 2023-1218-2711Details
install new fire sprinkler system per nfpa13 2022 throughout building including 2" dedicated fire service per nfpa 24 (total fire sprinkler 62) ref pa # 2023-1218-2711 | $38,502 |
| May 2, 2025 | In progress issued May 2025 | 235 Wilde Av | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system per nfpa 13-d throughout building including 1" combination fire service per nfpa 24 (total sprinklers 34) rf pa 202011138809Details
install new fire sprinkler system per nfpa 13-d throughout building including 1" combination fire service per nfpa 24 (total sprinklers 34) rf pa 202011138809 | $21,114 |
| May 2, 2025 | Completed final sign-off Feb 2026 | 231 Wilde Av | Sf Plumbing & Fire Protection Inc | install new fire sprinlker system per nfpa 13d throughout bldg including 1" combination fire service per nfpa 24 (total sprinklers 34) ref pa 202011138806Details
install new fire sprinlker system per nfpa 13d throughout bldg including 1" combination fire service per nfpa 24 (total sprinklers 34) ref pa 202011138806 | $21,114 |
| Jan 21, 2025 | In progress issued Jan 2025 | 2755 Harrison St | Sf Plumbing & Fire Protection Inc | install new fire sprinlker system at 1st fl, adu and garage per nfpa 13r including 2" dedicated fire sercie per nfpa 24 total: 17. ref 201805017932Details
install new fire sprinlker system at 1st fl, adu and garage per nfpa 13r including 2" dedicated fire sercie per nfpa 24 total: 17. ref 201805017932 | $10,557 |
| Jan 21, 2025 | Completed final sign-off Dec 2025 | 1700 19th Av | Sf Plumbing & Fire Protection Inc | install new fire sprinler system at 1st fl. adu and garages per nfpa 13 including 2" dedicated fire service per fnpa 24. total sprinklers: 37 ref 202106041737Details
install new fire sprinler system at 1st fl. adu and garages per nfpa 13 including 2" dedicated fire service per fnpa 24. total sprinklers: 37 ref 202106041737 | $22,977 |
| Nov 6, 2024 | Completed final sign-off Sep 2025 | 3011 20th St | Sf Plumbing & Fire Protection Inc | ref 202307242785, 202307242784, 202307242786 202307242787- install (n) fire sprinkler system throughout nfpa 13. building including 4 in underground fire servcie per nfpa 24. and 2 standpipes per nfpa 14 total heads 89Details
ref 202307242785, 202307242784, 202307242786 202307242787- install (n) fire sprinkler system throughout nfpa 13. building including 4 in underground fire servcie per nfpa 24. and 2 standpipes per nfpa 14 total heads 89 | $55,269 |
| Jun 21, 2024 | In progress issued Jul 2024 | 159 Laidley St | Sf Plumbing & Fire Protection Inc | fire only: install new fire sprinkler system throughout building per nfpa 13-r and nfpa 13 extrahard including 2" dedicated fire service per nfpa24. total sprinklers 56: ref# 202108236957.Details
fire only: install new fire sprinkler system throughout building per nfpa 13-r and nfpa 13 extrahard including 2" dedicated fire service per nfpa24. total sprinklers 56: ref# 202108236957. | $34,776 |
| Mar 13, 2024 | Completed final sign-off Jan 2025 | 3100 Taraval St | Sf Plumbing & Fire Protection Inc | as built location of fire service. ref pa# 202304256421Details
as built location of fire service. ref pa# 202304256421 | |
| Feb 23, 2024 | Completed final sign-off Oct 2024 | 63 Carmel St | Sf Plumbing & Fire Protection Inc | fire sprinkler system re-routing. installation as built. ref pa#202307313295Details
fire sprinkler system re-routing. installation as built. ref pa#202307313295 | |
| Jan 22, 2024 | Completed final sign-off Oct 2025 | 660 Carolina St | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system throughout building per nfpa13-r including 2" underground dedicated fire service per nfpa24, total sprinklers 64. ref pa# 202102043970.Details
install new fire sprinkler system throughout building per nfpa13-r including 2" underground dedicated fire service per nfpa24, total sprinklers 64. ref pa# 202102043970. | $39,744 |
| Jan 22, 2024 | Completed final sign-off Nov 2024 | 3819 23rd St | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system throughout attic floor and existing travel areas per nfpa13-r including 2" underground fire service per nfpa24, total sprinklers 26. ref pa# 202102043970.Details
install new fire sprinkler system throughout attic floor and existing travel areas per nfpa13-r including 2" underground fire service per nfpa24, total sprinklers 26. ref pa# 202102043970. | $16,146 |
| Dec 4, 2023 | Completed final sign-off Feb 2024 | 2200 Turk Bl | Sf Plumbing & Fire Protection Inc | as built back flow preventor. ref 2022.0404.1456Details
as built back flow preventor. ref 2022.0404.1456 | |
| Dec 4, 2023 | Completed final sign-off Feb 2024 | 2210 Turk Bl | Sf Plumbing & Fire Protection Inc | as built back flow preventor. ref 2022.0404.1457Details
as built back flow preventor. ref 2022.0404.1457 | |
| Nov 28, 2023 | Completed final sign-off Oct 2024 | 423 Union St | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system per nfpa13 at basement floor and new adu at first floor including 2" dedicated fire service underground per nfpa 24 (total sprinklers 45). ref 202011259745.Details
install new fire sprinkler system per nfpa13 at basement floor and new adu at first floor including 2" dedicated fire service underground per nfpa 24 (total sprinklers 45). ref 202011259745. | $27,945 |
| Nov 9, 2023 | Completed final sign-off Dec 2024 | 1604 Mcallister St | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system per nfpa 13 throughout building including 4" dedicated fire service per nfpa24 (total sprinklers 242). ref pa 2023-0811-4266Details
install new fire sprinkler system per nfpa 13 throughout building including 4" dedicated fire service per nfpa24 (total sprinklers 242). ref pa 2023-0811-4266 | $150,282 |
| Oct 2, 2023 | Completed final sign-off Feb 2024 | 1400 17th St | Sf Plumbing & Fire Protection Inc | t.i. extend (e) fire sprinkler system to convert the complete fl sprinkler system per nfpa13 ord hazard2, connect to (e) system ref pa# 2023-0403-4892Details
t.i. extend (e) fire sprinkler system to convert the complete fl sprinkler system per nfpa13 ord hazard2, connect to (e) system ref pa# 2023-0403-4892 | $128,400 |
| Aug 4, 2023 | Completed final sign-off Sep 2025 | 228 Vicksburg St | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system throughout building per nfpa13 including 2" dedicated fire service per nfpa24, total sprinklers 90, ref pa# 2020-0709-9901.Details
install new fire sprinkler system throughout building per nfpa13 including 2" dedicated fire service per nfpa24, total sprinklers 90, ref pa# 2020-0709-9901. | $57,780 |
| Jul 31, 2023 | Completed final sign-off Oct 2024 | 63 Carmel St | Sf Plumbing & Fire Protection Inc | install new fire sprinkler system throughout building per nfpa 13 including 2" dedicated fire service per nfpa 24 (total sprinkler 67) ref pa 2022-1027-5345Details
install new fire sprinkler system throughout building per nfpa 13 including 2" dedicated fire service per nfpa 24 (total sprinkler 67) ref pa 2022-1027-5345 | $42,947 |
| Jul 25, 2023 | Completed final sign-off Jan 2024 | 970 Chestnut St | Sf Plumbing & Fire Protection Inc | add fire sprinkler system throughout bldg 1st flr new units (5) per nfpa13, connect to existing 4" fire service and riser, total sprinklers added 73. ref pa# 202303203958.Details
add fire sprinkler system throughout bldg 1st flr new units (5) per nfpa13, connect to existing 4" fire service and riser, total sprinklers added 73. ref pa# 202303203958. | $45,866 |